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Pull NFS client bugfixes from Trond Myklebust:
"Hightlights include:
stable fixes:
- nfs/filelayout: fix oops when freeing filelayout segment
- NFS: Fix uninitialized rpc_wait_queue
bugfixes:
- NFSv4/pnfs: Fix an infinite layoutget loop
- nfs: RPC_MAX_AUTH_SIZE is in bytes"
* tag 'nfs-for-4.14-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
NFSv4/pnfs: Fix an infinite layoutget loop
nfs/filelayout: fix oops when freeing filelayout segment
sunrpc: remove redundant initialization of sock
NFS: Fix uninitialized rpc_wait_queue
NFS: Cleanup error handling in nfs_idmap_request_key()
nfs: RPC_MAX_AUTH_SIZE is in bytes
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
- a couple of serious fixes: use after free and blacklist for WRITE
SAME
- one error leg fix: write_pending failure
- one user experience problem: do not override max_sectors_kb
- one minor unused function removal
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: ibmvscsis: Fix write_pending failure path
scsi: libiscsi: Remove iscsi_destroy_session
scsi: libiscsi: Fix use-after-free race during iscsi_session_teardown
scsi: sd: Do not override max_sectors_kb sysfs setting
scsi: sd: Implement blacklist option for WRITE SAME w/ UNMAP
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git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
"I2C has three driver fixes for the newly introduced drivers and one ID
addition for the i801 driver"
* 'i2c/for-current-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: i2c-stm32f7: make structure stm32f7_setup static const
i2c: ensure termination of *_device_id tables
i2c: i801: Add support for Intel Cedar Fork
i2c: stm32f7: fix setup structure
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git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC fixes from Ulf Hansson:
"MMC core:
- Fix driver strength selection when selecting hs400es
- Delete bounce buffer handling:
This change fixes a problem related to how bounce buffers are being
allocated. However, instead of trying to fix that, let's just
remove the mmc bounce buffer code altogether, as it has practically
no use.
MMC host:
- meson-gx: A couple of fixes related to clock/phase/tuning
- sdhci-xenon: Fix clock resource by adding an optional bus clock"
* tag 'mmc-v4.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
mmc: sdhci-xenon: Fix clock resource by adding an optional bus clock
mmc: meson-gx: include tx phase in the tuning process
mmc: meson-gx: fix rx phase reset
mmc: meson-gx: make sure the clock is rounded down
mmc: Delete bounce buffer handling
mmc: core: add driver strength selection when selecting hs400es
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git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull hwmon fix from Guenter Roeck:
"Fix up error path in xgene driver"
* tag 'hwmon-for-linus-v4.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
hwmon: (xgene) Fix up error handling path mixup in 'xgene_hwmon_probe()'
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git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk fixes from Stephen Boyd:
- build fix to export the clk_bulk_prepare() symbol
- suspend fix for Samsung Exynos SoCs where we need to keep clks on
across suspend
- two critical clk markings for clks that shouldn't ever turn off on
Rockchip SoCs
- a fix for a copy-paste mistake on Rockchip rk3128 causing some clks
to touch the same bit and trample over one another
* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
clk: samsung: exynos4: Enable VPLL and EPLL clocks for suspend/resume cycle
clk: Export clk_bulk_prepare()
clk: rockchip: add sclk_timer5 as critical clock on rk3128
clk: rockchip: fix up rk3128 pvtm and mipi_24m gate regs error
clk: rockchip: add pclk_pmu as critical clock on rk3128
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git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc
Pull ARC udpates from Vineet Gupta:
- updates for various platforms
- boot log updates for upcoming HS48 family of cores (dual issue)
* tag 'arc-4.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
ARC: [plat-hsdk]: Add reset controller node to manage ethernet reset
ARC: [plat-hsdk]: Temporary fix to set CPU frequency to 1GHz
ARC: fix allnoconfig build warning
ARCv2: boot log: identify HS48 cores (dual issue)
ARC: boot log: decontaminate ARCv2 ISA_CONFIG register
arc: remove redundant UTS_MACHINE define in arch/arc/Makefile
ARC: [plat-eznps] Update platform maintainer as Noam left
ARC: [plat-hsdk] use actual clk driver to manage cpu clk
ARC: [*defconfig] Reenable soft lock-up detector
ARC: [plat-axs10x] sdio: Temporary fix of sdio ciu frequency
ARC: [plat-hsdk] sdio: Temporary fix of sdio ciu frequency
ARC: [plat-axs103] Add temporary quirk to reset ethernet IP
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Pull xfs fixes from Darrick Wong:
- fix a race between overlapping copy on write aio
- fix cow fork swapping when we defragment reflinked files
* tag 'xfs-4.14-fixes-4' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
xfs: handle racy AIO in xfs_reflink_end_cow
xfs: always swap the cow forks when swapping extents
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Pull block fixes from Jens Axboe:
"A collection of fixes for this series. This contains:
- NVMe pull request from Christoph, one uuid attribute fix, and one
fix for the controller memory buffer address for remapped BARs.
- use-after-free fix for bsg, from Benjamin Block.
- bcache race/use-after-free fix for a list traversal, fixing a
regression in this merge window. From Coly Li.
- null_blk change configfs dependency change from a 'depends' to a
'select'. This is a change from this merge window as well. From me.
- nbd signal fix from Josef, fixing a regression introduced with the
status code changes.
- nbd MAINTAINERS mailing list entry update.
- blk-throttle stall fix from Joseph Qi.
- blk-mq-debugfs fix from Omar, fixing an issue where we don't
register the IO scheduler debugfs directory, if the driver is
loaded with it. Only shows up if you switch through the sysfs
interface"
* 'for-linus' of git://git.kernel.dk/linux-block:
bsg-lib: fix use-after-free under memory-pressure
nvme-pci: Use PCI bus address for data/queues in CMB
blk-mq-debugfs: fix device sched directory for default scheduler
null_blk: change configfs dependency to select
blk-throttle: fix possible io stall when upgrade to max
MAINTAINERS: update list for NBD
nbd: fix -ERESTARTSYS handling
nvme: fix visibility of "uuid" ns attribute
bcache: use llist_for_each_entry_safe() in __closure_wake_up()
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git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI fixes from Bjorn Helgaas:
"Fix legacy IDE probe issues exposed by recent PCI core IRQ mapping
changes (Bartlomiej Zolnierkiewicz, Lorenzo Pieralisi)"
* tag 'pci-v4.14-fixes-4' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
ide: fix IRQ assignment for PCI bus order probing
ide: pci: free PCI BARs on initialization failure
ide: free hwif->portdev on hwif_init() failure
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
- Bring initialisation of user space undefined instruction handling
early (core_initcall) since late_initcall() happens after modprobe in
initramfs is invoked. Similar fix for fpsimd initialisation
- Increase the kernel stack when KASAN is enabled
- Bring the PCI ACS enabling earlier via the
iort_init_platform_devices()
- Fix misleading data abort address printing (decimal vs hex)
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: Ensure fpsimd support is ready before userspace is active
arm64: Ensure the instruction emulation is ready for userspace
arm64: Use larger stacks when KASAN is selected
ACPI/IORT: Fix PCI ACS enablement
arm64: fix misleading data abort decoding
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Pull KVM fixes from Radim Krčmář:
- fix PPC XIVE interrupt delivery
- fix x86 RCU breakage from asynchronous page faults when built without
PREEMPT_COUNT
- fix x86 build with -frecord-gcc-switches
- fix x86 build without X86_LOCAL_APIC
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: add X86_LOCAL_APIC dependency
x86/kvm: Move kvm_fastop_exception to .fixup section
kvm/x86: Avoid async PF preempting the kernel incorrectly
KVM: PPC: Book3S: Fix server always zero from kvmppc_xive_get_xive()
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git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma
Pull rdma fixes from Doug Ledford:
"This is a pretty small pull request. Only 6 patches in total. There
are no outstanding -rc patches on the mailing list after this pull
request, so only if some new issues are discovered in the remainder of
the rc cycles will you hear from me again.
Summary:
- a fix for iwpm netlink usage
- a fix for error unwinding in mlx5
- two fixes to vlan handling in qedr
- a couple small i40iw fixes"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma:
i40iw: Fix port number for query QP
i40iw: Add missing memory barriers
RDMA/qedr: Parse vlan priority as sl
RDMA/qedr: Parse VLAN ID correctly and ignore the value of zero
IB/mlx5: Fix label order in error path handling
RDMA/iwpm: Properly mark end of NL messages
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git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
"Two more fixes for bugs introduced in 4.13.
The sector_t problem with 32bit architecture and !LBDAF config seems
serious but the number of affected deployments is hopefully low.
The clashing status bits could lead to a confusing in-memory state of
the whole-filesystem operations if used with the quota override sysfs
knob"
* 'for-4.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
Btrfs: fix overlap of fs_info::flags values
btrfs: avoid overflow when sector_t is 32 bit
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Pull ceph fixes from Ilya Dryomov:
"Two fixups for CephFS snapshot-handling patches in -rc1"
* tag 'ceph-for-4.14-rc4' of git://github.com/ceph/ceph-client:
ceph: fix __choose_mds() for LSSNAP request
ceph: properly queue cap snap for newly created snap realm
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DW ethernet controller on HSDK hangs sometimes after SW reset, so
add reset node to make possible to reset DW ethernet controller HW.
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs
Pull overlayfs fixes from Miklos Szeredi:
"Fix a regression in 4.14 and one in 4.13. The latter is a case when
Docker is doing something it really shouldn't and gets away with it.
We now print a warning instead of erroring out.
There are also fixes to several error paths"
* 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
ovl: fix regression caused by exclusive upper/work dir protection
ovl: fix missing unlock_rename() in ovl_do_copy_up()
ovl: fix dentry leak in ovl_indexdir_cleanup()
ovl: fix dput() of ERR_PTR in ovl_cleanup_index()
ovl: fix error value printed in ovl_lookup_index()
ovl: fix may_write_real() for overlayfs directories
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
"Nine small fixes, really nothing that stands out.
A work-around for a spurious MCE on Power9. A CXL fault handling fix,
some fixes to the new XIVE code, and a fix to the new 32-bit
STRICT_KERNEL_RWX code.
Fixes for old code/stable: an fix to an incorrect TLB flush on boot
but not on any current machines, a compile error on 4xx and a fix to
memory hotplug when using radix (Power9).
Thanks to: Anton Blanchard, Cédric Le Goater, Christian Lamparter,
Christophe Leroy, Christophe Lombard, Guenter Roeck, Jeremy Kerr,
Michael Neuling, Nicholas Piggin"
* tag 'powerpc-4.14-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/powernv: Increase memory block size to 1GB on radix
powerpc/mm: Call flush_tlb_kernel_range with interrupts enabled
powerpc/xive: Clear XIVE internal structures when a CPU is removed
powerpc/xive: Fix IPI reset
powerpc/4xx: Fix compile error with 64K pages on 40x, 44x
powerpc: Fix action argument for cpufeatures-based TLB flush
cxl: Fix memory page not handled
powerpc: Fix workaround for spurious MCE on POWER9
powerpc: Handle MCE on POWER9 with only DSISR bit 30 set
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git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"Some i915 fixes from the last two weeks (as they were on a strange
base and I just waited for rc3), also a single sun4i hdmi fix"
* tag 'drm-fixes-for-v4.14-rc4' of git://people.freedesktop.org/~airlied/linux:
drm/i915/glk: Fix DMC/DC state idleness calculation
drm/i915/cnl: Reprogram DMC firmware after S3/S4 resume
drm/i915: Fix DDI PHY init if it was already on
drm/sun4i: hdmi: Disable clks in bind function error path and unbind function
drm/i915/bios: ignore HDMI on port A
drm/i915: remove redundant variable hw_check
drm/i915: always update ELD connector type after get modes
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull watchddog clean-up and fixes from Thomas Gleixner:
"The watchdog (hard/softlockup detector) code is pretty much broken in
its current state. The patch series addresses this by removing all
duct tape and refactoring it into a workable state.
The reasons why I ask for inclusion that late in the cycle are:
1) The code causes lockdep splats vs. hotplug locking which get
reported over and over. Unfortunately there is no easy fix.
2) The risk of breakage is minimal because it's already broken
3) As 4.14 is a long term stable kernel, I prefer to have working
watchdog code in that and the lockdep issues resolved. I wouldn't
ask you to pull if 4.14 wouldn't be a LTS kernel or if the
solution would be easy to backport.
4) The series was around before the merge window opened, but then got
delayed due to the UP failure caused by the for_each_cpu()
surprise which we discussed recently.
Changes vs. V1:
- Addressed your review points
- Addressed the warning in the powerpc code which was discovered late
- Changed two function names which made sense up to a certain point
in the series. Now they match what they do in the end.
- Fixed a 'unused variable' warning, which got not detected by the
intel robot. I triggered it when trying all possible related config
combinations manually. Randconfig testing seems not random enough.
The changes have been tested by and reviewed by Don Zickus and tested
and acked by Micheal Ellerman for powerpc"
* 'core-watchdog-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (36 commits)
watchdog/core: Put softlockup_threads_initialized under ifdef guard
watchdog/core: Rename some softlockup_* functions
powerpc/watchdog: Make use of watchdog_nmi_probe()
watchdog/core, powerpc: Lock cpus across reconfiguration
watchdog/core, powerpc: Replace watchdog_nmi_reconfigure()
watchdog/hardlockup/perf: Fix spelling mistake: "permanetely" -> "permanently"
watchdog/hardlockup/perf: Cure UP damage
watchdog/hardlockup: Clean up hotplug locking mess
watchdog/hardlockup/perf: Simplify deferred event destroy
watchdog/hardlockup/perf: Use new perf CPU enable mechanism
watchdog/hardlockup/perf: Implement CPU enable replacement
watchdog/hardlockup/perf: Implement init time detection of perf
watchdog/hardlockup/perf: Implement init time perf validation
watchdog/core: Get rid of the racy update loop
watchdog/core, powerpc: Make watchdog_nmi_reconfigure() two stage
watchdog/sysctl: Clean up sysctl variable name space
watchdog/sysctl: Get rid of the #ifdeffery
watchdog/core: Clean up header mess
watchdog/core: Further simplify sysctl handling
watchdog/core: Get rid of the thread teardown/setup dance
...
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We register the pm/hotplug callbacks for FPSIMD as late_initcall,
which happens after the userspace is active (from initramfs via
populate_rootfs, a rootfs_initcall). Make sure we are ready even
before the userspace could potentially use it, by promoting to
a core_initcall.
Cc: Will Deacon <will.deacon@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Dave Martin <dave.martin@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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We trap and emulate some instructions (e.g, mrs, deprecated instructions)
for the userspace. However the handlers for these are registered as
late_initcalls and the userspace could be up and running from the initramfs
by that time (with populate_rootfs, which is a rootfs_initcall()). This
could cause problems for the early applications ending up in failure
like :
[ 11.152061] modprobe[93]: undefined instruction: pc=0000ffff8ca48ff4
This patch promotes the specific calls to core_initcalls, which are
guaranteed to be completed before we hit userspace.
Cc: stable@vger.kernel.org
Cc: Dave Martin <dave.martin@arm.com>
Cc: Matthias Brugger <mbrugger@suse.com>
Cc: James Morse <james.morse@arm.com>
Reported-by: Matwey V. Kornilov <matwey.kornilov@gmail.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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Memory hot unplug on PowerNV radix hosts is broken. Our memory block
size is 256MB but since we map the linear region with very large
pages, each pte we tear down maps 1GB.
A hot unplug of one 256MB memory block results in 768MB of memory
getting unintentionally unmapped. At this point we are likely to oops.
Fix this by increasing our memory block size to 1GB on PowerNV radix
hosts.
Fixes: 4b5d62ca17a1 ("powerpc/mm: add radix__remove_section_mapping()")
Cc: stable@vger.kernel.org # v4.11+
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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git://anongit.freedesktop.org/git/drm-misc into drm-fixes
One bugfix in sun4i for 4.14
* tag 'drm-misc-fixes-2017-10-05' of git://anongit.freedesktop.org/git/drm-misc:
drm/sun4i: hdmi: Disable clks in bind function error path and unbind function
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git://anongit.freedesktop.org/git/drm-intel into drm-fixes
drm/i915 fixes for 4.14-rc4:
All 3 highest GLK bugs fixed by Imre:
- GLK drv reload - Fix DDI Phy init if it was already on.
- GLK suspend resume - Reprogram DMC firmware after s3/s4.
- GLK DC states - Fix idleness calculation.
* tag 'drm-intel-fixes-2017-10-04' of git://anongit.freedesktop.org/git/drm-intel:
drm/i915/glk: Fix DMC/DC state idleness calculation
drm/i915/cnl: Reprogram DMC firmware after S3/S4 resume
drm/i915: Fix DDI PHY init if it was already on
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fix from Rafael Wysocki:
"This fixes a code ordering issue in the main suspend-to-idle loop that
causes some "low power S0 idle" conditions to be incorrectly reported
as unmet with suspend/resume debug messages enabled"
* tag 'pm-4.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
PM / s2idle: Invoke the ->wake() platform callback earlier
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* pm-sleep:
PM / s2idle: Invoke the ->wake() platform callback earlier
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git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper fixes from Mike Snitzer:
- a stable fix for the alignment of the event number reported at the
end of the 'DM_LIST_DEVICES' ioctl.
- a couple stable fixes for the DM crypt target.
- a DM raid health status reporting fix.
* tag 'for-4.14/dm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm raid: fix incorrect status output at the end of a "recover" process
dm crypt: reject sector_size feature if device length is not aligned to it
dm crypt: fix memory leak in crypt_ctr_cipher_old()
dm ioctl: fix alignment of event number in the device list
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There are three important fields that indicate the overall health and
status of an array: dev_health, sync_ratio, and sync_action. They tell
us the condition of the devices in the array, and the degree to which
the array is synchronized.
This commit fixes a condition that is reported incorrectly. When a member
of the array is being rebuilt or a new device is added, the "recover"
process is used to synchronize it with the rest of the array. When the
process is complete, but the sync thread hasn't yet been reaped, it is
possible for the state of MD to be:
mddev->recovery = [ MD_RECOVERY_RUNNING MD_RECOVERY_RECOVER MD_RECOVERY_DONE ]
curr_resync_completed = <max dev size> (but not MaxSector)
and all rdevs to be In_sync.
This causes the 'array_in_sync' output parameter that is passed to
rs_get_progress() to be computed incorrectly and reported as 'false' --
or not in-sync. This in turn causes the dev_health status characters to
be reported as all 'a', rather than the proper 'A'.
This can cause erroneous output for several seconds at a time when tools
will want to be checking the condition due to events that are raised at
the end of a sync process. Fix this by properly calculating the
'array_in_sync' return parameter in rs_get_progress().
Also, remove an unnecessary intermediate 'recovery_cp' variable in
rs_get_progress().
Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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The rework of the posted interrupt handling broke building without
support for the local APIC:
ERROR: "boot_cpu_physical_apicid" [arch/x86/kvm/kvm-intel.ko] undefined!
That configuration is probably not particularly useful anyway, so
we can avoid the randconfig failures by adding a Kconfig dependency.
Fixes: 8b306e2f3c41 ("KVM: VMX: avoid double list add with VT-d posted interrupts")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"A collection of small fixes, mostly with stable ones:
- X32 ABI fix for PCM; likely not so many people suffer from it, but
still better to fix
- Two minor kernel warning fixes on USB audio devices spotted by
syzkaller
- Regression fix of echoaudio due to its inconsistent dimension
- Fix for HBR support on Intel DP audio, on some recent chips
- USB-audio quirk for yet another Plantronics devices
- Fix for potential double-fetch in ASIHPI FIFO queue"
* tag 'sound-4.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: usx2y: Suppress kernel warning at page allocation failures
Revert "ALSA: echoaudio: purge contradictions between dimension matrix members and total number of members"
ALSA: usb-audio: Check out-of-bounds access by corrupted buffer descriptor
ALSA: pcm: Fix structure definition for X32 ABI
ALSA: usb-audio: Add sample rate quirk for Plantronics C310/C520-M
ALSA: hda - program ICT bits to support HBR audio
ALSA: asihpi: fix a potential double-fetch bug when copying puhm
ALSA: compress: Remove unused variable
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git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
Pull HID subsystem fixes from Jiri Kosina:
- buffer management size fix for i2c-hid driver, from Adrian Salido
- tool ID regression fixes for Wacom driver from Jason Gerecke
- a few small assorted fixes and a few device ID additions
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
Revert "HID: multitouch: Support ALPS PTP stick with pid 0x120A"
HID: hidraw: fix power sequence when closing device
HID: wacom: Always increment hdev refcount within wacom_get_hdev_data
HID: wacom: generic: Clear ABS_MISC when tool leaves proximity
HID: wacom: generic: Send MSC_SERIAL and ABS_MISC when leaving prox
HID: i2c-hid: allocate hid buffers for real worst case
HID: rmi: Make sure the HID device is opened on resume
HID: multitouch: Support ALPS PTP stick with pid 0x120A
HID: multitouch: support buttons and trackpoint on Lenovo X1 Tab Gen2
HID: wacom: Correct coordinate system of touchring and pen twist
HID: wacom: Properly report negative values from Intuos Pro 2 Bluetooth
HID: multitouch: Fix system-control buttons not working
HID: add multi-input quirk for IDC6680 touchscreen
HID: wacom: leds: Don't try to control the EKR's read-only LEDs
HID: wacom: bits shifted too much for 9th and 10th buttons
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Pull NVMe fixes from Christoph:
"A trivial one-liner from Martin to fix the visible of the uuid attr,
and another one (originally from Abhishek Shah, rewritten by me) to fix
the CMB addresses passed back to the controller in case of a system that
remaps BAR addresses between host and device."
|
|
Pull networking fixes from David Miller:
1) Check iwlwifi 9000 reorder buffer out-of-space condition properly,
from Sara Sharon.
2) Fix RCU splat in qualcomm rmnet driver, from Subash Abhinov
Kasiviswanathan.
3) Fix session and tunnel release races in l2tp, from Guillaume Nault
and Sabrina Dubroca.
4) Fix endian bug in sctp_diag_dump(), from Dan Carpenter.
5) Several mlx5 driver fixes from the Mellanox folks (max flow counters
cap check, invalid memory access in IPoIB support, etc.)
6) tun_get_user() should bail if skb->len is zero, from Alexander
Potapenko.
7) Fix RCU lookups in inetpeer, from Eric Dumazet.
8) Fix locking in packet_do_bund().
9) Handle cb->start() error properly in netlink dump code, from Jason
A. Donenfeld.
10) Handle multicast properly in UDP socket early demux code. From Paolo
Abeni.
11) Several erspan bug fixes in ip_gre, from Xin Long.
12) Fix use-after-free in socket filter code, in order to handle the
fact that listener lock is no longer taken during the three-way TCP
handshake. From Eric Dumazet.
13) Fix infoleak in RTM_GETSTATS, from Nikolay Aleksandrov.
14) Fix tail call generation in x86-64 BPF JIT, from Alexei Starovoitov.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (77 commits)
net: 8021q: skip packets if the vlan is down
bpf: fix bpf_tail_call() x64 JIT
net: stmmac: dwmac-rk: Add RK3128 GMAC support
rndis_host: support Novatel Verizon USB730L
net: rtnetlink: fix info leak in RTM_GETSTATS call
socket, bpf: fix possible use after free
mlxsw: spectrum_router: Track RIF of IPIP next hops
mlxsw: spectrum_router: Move VRF refcounting
net: hns3: Fix an error handling path in 'hclge_rss_init_hw()'
net: mvpp2: Fix clock resource by adding an optional bus clock
r8152: add Linksys USB3GIGV1 id
l2tp: fix l2tp_eth module loading
ip_gre: erspan device should keep dst
ip_gre: set tunnel hlen properly in erspan_tunnel_init
ip_gre: check packet length and mtu correctly in erspan_xmit
ip_gre: get key from session_id correctly in erspan_rcv
tipc: use only positive error codes in messages
ppp: fix __percpu annotation
udp: perform source validation for mcast early demux
IPv4: early demux can return an error code
...
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Enforcing exclusive ownership on upper/work dirs caused a docker
regression: https://github.com/moby/moby/issues/34672.
Euan spotted the regression and pointed to the offending commit.
Vivek has brought the regression to my attention and provided this
reproducer:
Terminal 1:
mount -t overlay -o workdir=work,lowerdir=lower,upperdir=upper none
merged/
Terminal 2:
unshare -m
Terminal 1:
umount merged
mount -t overlay -o workdir=work,lowerdir=lower,upperdir=upper none
merged/
mount: /root/overlay-testing/merged: none already mounted or mount point
busy
To fix the regression, I replaced the error with an alarming warning.
With index feature enabled, mount does fail, but logs a suggestion to
override exclusive dir protection by disabling index.
Note that index=off mount does take the inuse locks, so a concurrent
index=off will issue the warning and a concurrent index=on mount will fail.
Documentation was updated to reflect this change.
Fixes: 2cac0c00a6cd ("ovl: get exclusive ownership on upper/work dirs")
Cc: <stable@vger.kernel.org> # v4.13
Reported-by: Euan Kemp <euank@euank.com>
Reported-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
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Use the ovl_lock_rename_workdir() helper which requires
unlock_rename() only on lock success.
Fixes: ("fd210b7d67ee ovl: move copy up lock out")
Cc: <stable@vger.kernel.org> # v4.13
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
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index dentry was not released when breaking out of the loop
due to index verification error.
Fixes: 415543d5c64f ("ovl: cleanup bad and stale index entries on mount")
Cc: <stable@vger.kernel.org> # v4.13
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
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Fixes: caf70cb2ba5d ("ovl: cleanup orphan index entries")
Cc: <stable@vger.kernel.org> # v4.13
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
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Fixes: 359f392ca53e ("ovl: lookup index entry for copy up origin")
Cc: <stable@vger.kernel.org> # v4.13
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
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Overlayfs directory file_inode() is the overlay inode whether the real
inode is upper or lower.
This fixes a regression in xfstest generic/158.
Fixes: 7c6893e3c9ab ("ovl: don't allow writing ioctl on lower layer")
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
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When compiling the kernel with the '-frecord-gcc-switches' flag, objtool
complains:
arch/x86/kvm/emulate.o: warning: objtool: .GCC.command.line+0x0: special: can't find new instruction
And also the kernel fails to link.
The problem is that the 'kvm_fastop_exception' code gets placed into the
throwaway '.GCC.command.line' section instead of '.text'.
Exception fixup code is conventionally placed in the '.fixup' section,
so put it there where it belongs.
Reported-and-tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
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The structure stm32f7_setup is local to the source and does not need
to be in global scope, make it static const.
Cleans up sparse warning:
symbol 'stm32f7_setup' was not declared. Should it be static?
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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Make sure (of/i2c/platform)_device_id tables are NULL terminated.
Found by coccinelle spatch "misc/of_table.cocci"
Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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Add PCI ID for Intel Cedar Fork PCH.
Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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I2C drive setup structure is not properly allocated.
Make it static instead of pointer to store driver data.
Fixes: aeb068c5721485 ("i2c: i2c-stm32f7: add driver")
Signed-off-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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If the vlan is down, free the packet instead of proceeding with other
processing, or counting it as received. If vlan interfaces are used
as slaves for bonding, with arp monitoring for connectivity, if the rx
counter is seen to be incrementing, then the bond device will not
observe that the interface is down.
CC: David S. Miller <davem@davemloft.net>
Signed-off-by: Vishakha Narvekar <Vishakha.Narvekar@dell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"Our first batch of fixes this release cycle, unfortunately a bit
noisier than usual. Two major groups stand out:
- Some pinctril dts/dtsi changes for stm32 due to a new driver being
merged during the merge window, and this aligns the DT contents
between the old format and the new. This could arguably be moved to
the next merge window but it also seemed relatively harmless to
include now.
- Amlogic/meson had driver changes merged that required devicetree
changes to avoid functional/performance regressions. I've already
asked them to be more careful about this going forward, and making
sure drivers are compatible with older DTs when they make these
kind of changes. The platform is actively being upstreamed so
there's a few things in flight, we've seen this happen before and
sometimes it's hard to catch in time.
Besides that there is the usual mix of minor fixes"
* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (33 commits)
ARM: dts: stm32: use right pinctrl compatible for stm32f469
ARM: dts: stm32: Fix STMPE1600 binding on stm32429i-eval board
ARM: defconfig: update Gemini defconfig
ARM: defconfig: FRAMEBUFFER_CONSOLE can no longer be =m
arm64: dts: rockchip: add the grf clk for dw-mipi-dsi on rk3399
reset: Restrict RESET_HSDK to ARC_SOC_HSDK or COMPILE_TEST
ARM: dts: da850-evm: add serial and ethernet aliases
ARM: dts: am43xx-epos-evm: Remove extra CPSW EMAC entry
ARM: dts: am33xx: Add spi alias to match SOC schematics
ARM: OMAP2+: hsmmc: fix logic to call either omap_hsmmc_init or omap_hsmmc_late_init but not both
ARM: dts: dra7: Set a default parent to mcasp3_ahclkx_mux
ARM: OMAP2+: dra7xx: Set OPT_CLKS_IN_RESET flag for gpio1
ARM: dts: nokia n900: drop unneeded/undocumented parts of the dts
arm64: dts: rockchip: Correct MIPI DPHY PLL clock on rk3399
arm64: dt marvell: Fix AP806 system controller size
MAINTAINERS: add Macchiatobin maintainers entry
ARC: reset: remove the misleading v1 suffix all over
ARC: reset: add missing DT binding documentation for HSDKv1 reset driver
ARC: reset: Only build on archs that have IOMEM
ARM: at91: Replace uses of virt_to_phys with __pa_symbol
...
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Update my imgtec.com and personal email address to my kernel.org one in
a few places as MIPS will soon no longer be part of Imagination
Technologies, and add mappings in .mailcap so get_maintainer.pl reports
the right address.
Signed-off-by: James Hogan <jhogan@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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According to BSpec GLK like BXT needs to ignore the idle state of cores
before starting the DMC firmware's DC state handler.
Fixes: dbb28b5c3d3c ("drm/i915/DMC/GLK: Load DMC on GLK")
Cc: Anusha Srivatsa <anusha.srivatsa@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171003095159.711-2-imre.deak@intel.com
(cherry picked from commit b7208a3f3e52791571df064fb96025ad48edd1bf)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
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The DMC firmware program memory is lost after S3/S4 system suspend, so
we need to reprogram it during resume.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=103070
Fixes: cebfcead63de ("drm/i915/DMC/CNL: Load DMC on CNL")
Cc: Anusha Srivatsa <anusha.srivatsa@intel.com>
Cc: Animesh Manna <animesh.manna@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171003095159.711-1-imre.deak@intel.com
(cherry picked from commit 57522c4c87de20d8f7ad4e142a3a4334066d55ff)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
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Port number 0 is an invalid port number. Set it to 1
as there is one port per i40iw device.
Fixes: d37498417947 ("i40iw: add files for iwarp interface")
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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Remove duplicate set_64bit_val call to offset 24.
Replace some instances of set_64bit_val with
i40iw_insert_wqe_hdr as valid bit needs a write
barrier and should be the last write operation for the WQE.
Fixes: 786c6adb3a94 ("i40iw: add puda code")
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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Parse the vlan priority from the vlan tag and configure it to the
WC's sl field.
Fixes: abd49676c707 ("qed: Add RoCE ll2 & GSI support")
Signed-off-by: Ram Amrani <Ram.Amrani@cavium.com>
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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Rename vlan_id field name to vlan as it contains more than the vlan_id.
Mask out non vlan id fields from vlan tag of the QED LL2 RX GSI
vlan output. As it is expected to be vlan id only.
Ignore vlan_id with value of zero.
Fixes: abd49676c707 ("qed: Add RoCE ll2 & GSI support")
Signed-off-by: Ram Amrani <Ram.Amrani@cavium.com>
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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When UAR get_page fails, it needs to continue to cleanup debugfs for
congestion control parameters. Labels for error path were incorrectly
ordered.
This patch fixes to do correct cleanup on debugfs init failure and uar
get page failure.
Fixes: 4a2da0b8c078 ("IB/mlx5: Add debug control parameters for congestion control")
Signed-off-by: Parav Pandit <parav@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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Since we can now use a lock stateid or a delegation stateid, that
differs from the context stateid, we need to change the test in
nfs4_layoutget_handle_exception() to take this into account.
This fixes an infinite layoutget loop in the NFS client whereby
it keeps retrying the initial layoutget using the same broken
stateid.
Fixes: 70d2f7b1ea19b ("pNFS: Use the standard I/O stateid when...")
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/atorgue/stm32 into fixes
STM32 fixes for v4.14:
---------------------
-Fix STMPE1600 bindings for stm32429i-eval board
-Use right compatible for stm32f469 pinctrl. It implies to use
pinctrl dedicated files for F4 SoCs.
* tag 'stm32-dt-fixes-for-v4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/atorgue/stm32:
ARM: dts: stm32: use right pinctrl compatible for stm32f469
ARM: dts: stm32: Fix STMPE1600 binding on stm32429i-eval board
Signed-off-by: Olof Johansson <olof@lixom.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-amlogic into fixes
Amlogic 64-bit DT updates for v4.14 (round 3)
- updates for new MMC driver features/fixes
- support high-speed modes
* tag 'amlogic-dt64-3' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-amlogic:
ARM64: dts: meson-gxbb: nanopi-k2: enable sdr104 mode
ARM64: dts: meson-gxbb: nanopi-k2: enable sdcard UHS modes
ARM64: dts: meson-gxbb: p20x: enable sdcard UHS modes
ARM64: dts: meson-gxl: libretech-cc: enable high speed modes
ARM64: dts: meson-gxl: libretech-cc: add card regulator settle times
ARM64: dts: meson-gxbb: nanopi-k2: add card regulator settle times
ARM64: dts: meson: add mmc clk gate pins
ARM64: dts: meson: remove cap-sd-highspeed from emmc nodes
ARM64: dts: meson-gx: Use correct mmc clock source 0
Signed-off-by: Olof Johansson <olof@lixom.net>
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AddressSanitizer instrumentation can significantly bloat the stack, and
with GCC 7 this can result in stack overflows at boot time in some
configurations.
We can avoid this by doubling our stack size when KASAN is in use, as is
already done on x86 (and has been since KASAN was introduced).
Regardless of other patches to decrease KASAN's stack utilization,
kernels built with KASAN will always require more stack space than those
built without, and we should take this into account.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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commit f6810c15cf97 ("iommu/arm-smmu: Clean up early-probing
workarounds") removed kernel code that was allowing to initialize
and probe the SMMU devices early (ie earlier than PCI devices, through
linker script callback entries) in the boot process because it was not
needed any longer in that the SMMU devices/drivers now support deferred
probing.
Since the SMMUs probe routines are also in charge of requesting global
PCI ACS kernel enablement, commit f6810c15cf97 ("iommu/arm-smmu: Clean
up early-probing workarounds") also postponed PCI ACS enablement to
SMMUs devices probe time, which is too late given that PCI devices needs
to detect if PCI ACS is enabled to init the respective capability
through the following call path:
pci_device_add()
-> pci_init_capabilities()
-> pci_enable_acs()
Add code in the ACPI IORT SMMU platform devices initialization path
(that is called before ACPI PCI enumeration) to detect if there
exists firmware mappings to map root complexes ids to SMMU ids
and if so enable ACS for the system.
Fixes: f6810c15cf97 ("iommu/arm-smmu: Clean up early-probing workarounds")
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Tested-by: Nate Watterson <nwatters@codeaurora.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Hanjun Guo <hanjun.guo@linaro.org>
Cc: Sudeep Holla <sudeep.holla@arm.com>
Cc: Zhou Wang <wangzhou1@hisilicon.com>
Cc: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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Merge misc fixes from Andrew Morton:
"A lot of stuff, sorry about that. A week on a beach, then a bunch of
time catching up then more time letting it bake in -next. Shan't do
that again!"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (51 commits)
include/linux/fs.h: fix comment about struct address_space
checkpatch: fix ignoring cover-letter logic
m32r: fix build failure
lib/ratelimit.c: use deferred printk() version
kernel/params.c: improve STANDARD_PARAM_DEF readability
kernel/params.c: fix an overflow in param_attr_show
kernel/params.c: fix the maximum length in param_get_string
mm/memory_hotplug: define find_{smallest|biggest}_section_pfn as unsigned long
mm/memory_hotplug: change pfn_to_section_nr/section_nr_to_pfn macro to inline function
kernel/kcmp.c: drop branch leftover typo
memremap: add scheduling point to devm_memremap_pages
mm, page_alloc: add scheduling point to memmap_init_zone
mm, memory_hotplug: add scheduling point to __add_pages
lib/idr.c: fix comment for idr_replace()
mm: memcontrol: use vmalloc fallback for large kmem memcg arrays
kernel/sysctl.c: remove duplicate UINT_MAX check on do_proc_douintvec_conv()
include/linux/bitfield.h: remove 32bit from FIELD_GET comment block
lib/lz4: make arrays static const, reduces object code size
exec: binfmt_misc: kill the onstack iname[BINPRM_BUF_SIZE] array
exec: binfmt_misc: fix race between load_misc_binary() and kill_node()
...
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Currently, in PREEMPT_COUNT=n kernel, kvm_async_pf_task_wait() could call
schedule() to reschedule in some cases. This could result in
accidentally ending the current RCU read-side critical section early,
causing random memory corruption in the guest, or otherwise preempting
the currently running task inside between preempt_disable and
preempt_enable.
The difficulty to handle this well is because we don't know whether an
async PF delivered in a preemptible section or RCU read-side critical section
for PREEMPT_COUNT=n, since preempt_disable()/enable() and rcu_read_lock/unlock()
are both no-ops in that case.
To cure this, we treat any async PF interrupting a kernel context as one
that cannot be preempted, preventing kvm_async_pf_task_wait() from choosing
the schedule() path in that case.
To do so, a second parameter for kvm_async_pf_task_wait() is introduced,
so that we know whether it's called from a context interrupting the
kernel, and the parameter is set properly in all the callsites.
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Wanpeng Li <wanpeng.li@hotmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull smack fix from James Morris:
"It fixes a bug in xattr_getsecurity() where security_release_secctx()
was being called instead of kfree(), which leads to a memory leak in
the capabilities code. smack_inode_getsecurity is also fixed to behave
correctly when called from there"
* 'fixes-v4.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
lsm: fix smack_inode_removexattr and xattr_getsecurity memleak
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Commit 6edfa11cb396 ("clk: samsung: Add enable/disable operation for
PLL36XX clocks") added enable/disable operations to PLL clocks. Prior that
VPLL and EPPL clocks were always enabled because the enable bit was never
touched. Those clocks have to be enabled during suspend/resume cycle,
because otherwise board fails to enter sleep mode. This patch enables them
unconditionally before entering system suspend state. System restore
function will set them to the previous state saved in the register cache
done before that unconditional enable.
Fixes: 6edfa11cb396 ("clk: samsung: Add enable/disable operation for PLL36XX clocks")
CC: stable@vger.kernel.org # v4.13
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fixlets from Steven Rostedt:
"Two updates:
- A memory fix with left over code from spliting out ftrace_ops and
function graph tracer, where the function graph tracer could reset
the trampoline pointer, leaving the old trampoline not to be freed
(memory leak).
- The update to Paul's patch that added the unnecessary READ_ONCE().
This removes the unnecessary READ_ONCE() instead of having to
rebase the branch to update the patch that added it"
* tag 'trace-v4.14-rc1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
rcu: Remove extraneous READ_ONCE()s from rcu_irq_{enter,exit}()
ftrace: Fix kmemleak in unregister_ftrace_graph
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If a crypt mapping uses optional sector_size feature, additional
restrictions to mapped device segment size must be applied in
constructor, otherwise the device activation will fail later.
Fixes: 8f0009a225 ("dm crypt: optionally support larger encryption sector size")
Cc: stable@vger.kernel.org # 4.12+
Signed-off-by: Milan Broz <gmazyland@gmail.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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Because the values of BTRFS_FS_EXCL_OP and BTRFS_FS_QUOTA_OVERRIDE overlap,
we should change the value.
First, BTRFS_FS_EXCL_OP was set to 14.
commit 171938e52807 ("btrfs: track exclusive filesystem operation in flags")
Next, the value of BTRFS_FS_QUOTA_OVERRIDE was set to 14.
commit f29efe292198 ("btrfs: add quota override flag to enable quota override for CAP_SYS_RESOURCE")
As a result, the value 14 overlapped, by accident.
This problem is solved by defining the value of BTRFS_FS_EXCL_OP as 16,
the flags are internal.
Fixes: f29efe292198 ("btrfs: add quota override flag to enable quota override for CAP_SYS_RESOURCE")
CC: stable@vger.kernel.org # 4.13+
Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
Reviewed-by: David Sterba <dsterba@suse.com>
[ minimize the change, update only BTRFS_FS_EXCL_OP ]
Signed-off-by: David Sterba <dsterba@suse.com>
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When under memory-pressure it is possible that the mempool which backs
the 'struct request_queue' will make use of up to BLKDEV_MIN_RQ count
emergency buffers - in case it can't get a regular allocation. These
buffers are preallocated and once they are also used, they are
re-supplied with old finished requests from the same request_queue (see
mempool_free()).
The bug is, when re-supplying the emergency pool, the old requests are
not again ran through the callback mempool_t->alloc(), and thus also not
through the callback bsg_init_rq(). Thus we skip initialization, and
while the sense-buffer still should be good, scsi_request->cmd might
have become to be an invalid pointer in the meantime. When the request
is initialized in bsg.c, and the user's CDB is larger than BLK_MAX_CDB,
bsg will replace it with a custom allocated buffer, which is freed when
the user's command is finished, thus it dangles afterwards. When next a
command is sent by the user that has a smaller/similar CDB as
BLK_MAX_CDB, bsg will assume that scsi_request->cmd is backed by
scsi_request->__cmd, will not make a custom allocation, and write into
undefined memory.
Fix this by splitting bsg_init_rq() into two functions:
- bsg_init_rq() is changed to only do the allocation of the
sense-buffer, which is used to back the bsg job's reply buffer. This
pointer should never change during the lifetime of a scsi_request, so
it doesn't need re-initialization.
- bsg_initialize_rq() is a new function that makes use of
'struct request_queue's initialize_rq_fn callback (which was
introduced in v4.12). This is always called before the request is
given out via blk_get_request(). This function does the remaining
initialization that was previously done in bsg_init_rq(), and will
also do it when the request is taken from the emergency-pool of the
backing mempool.
Fixes: 50b4d485528d ("bsg-lib: fix kernel panic resulting from missing allocation of reply-buffer")
Cc: <stable@vger.kernel.org> # 4.11+
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Benjamin Block <bblock@linux.vnet.ibm.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Jean-Denis Girard noticed commit c821e7f3 "pass bytes to
btrfs_bio_alloc" (https://patchwork.kernel.org/patch/9763081/)
introduces a regression on 32 bit machines.
When CONFIG_LBDAF is _not_ defined (CONFIG_LBDAF == Support for large
(2TB+) block devices and files) sector_t is 32 bit on 32bit machines.
In the function submit_extent_page, 'sector' (which is sector_t type) is
multiplied by 512 to convert it from sectors to bytes, leading to an
overflow when the disk is bigger than 4GB (!).
I added a cast to u64 to avoid overflow.
Fixes: c821e7f3 ("btrfs: pass bytes to btrfs_bio_alloc")
CC: stable@vger.kernel.org # 4.13+
Signed-off-by: Goffredo Baroncelli <kreijack@inwind.it>
Tested-by: Jean-Denis Girard <jd.girard@sysnux.pf>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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Currently, same stm32f429-pinctrl driver is used for stm32f429 and
stm32f469. As pin map is different between those 2 MCUs,
a stm32f469-pinctrl driver has been recently added.
This patch
-allows to use stm32f469-pinctrl driver for stm32f469 boards
-reworks stm32 devicetree files to fit with stm32f429 / stm32f469
In the same time it fixes an issue when only MACH_STM32F469 flag is
selected in menuconfig.
Fixes: d28bcd53fa90 ("ARM: stm32: Introduce MACH_STM32F469 flag")
Reported-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>
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flush_tlb_kernel_range() may call smp_call_function_many() which expects
interrupts to be enabled. This results in a traceback.
WARNING: CPU: 0 PID: 1 at kernel/smp.c:416 smp_call_function_many+0xcc/0x2fc
CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.14.0-rc1-00009-g0666f56 #1
task: cf830000 task.stack: cf82e000
NIP: c00a93c8 LR: c00a9634 CTR: 00000001
REGS: cf82fde0 TRAP: 0700 Not tainted (4.14.0-rc1-00009-g0666f56)
MSR: 00021000 <CE,ME> CR: 24000082 XER: 00000000
GPR00: c00a9634 cf82fe90 cf830000 c050ad3c c0015a54 00000000 00000001 00000001
GPR08: 00000001 00000000 00000000 cf82e000 24000084 00000000 c0003150 00000000
GPR16: 00000000 00000000 00000000 00000000 00000000 00000001 00000000 c0510000
GPR24: 00000000 c0015a54 00000000 c050ad3c c051823c c050ad3c 00000025 00000000
NIP [c00a93c8] smp_call_function_many+0xcc/0x2fc
LR [c00a9634] smp_call_function+0x3c/0x50
Call Trace:
[cf82fe90] [00000010] 0x10 (unreliable)
[cf82fed0] [c00a9634] smp_call_function+0x3c/0x50
[cf82fee0] [c0015d2c] flush_tlb_kernel_range+0x20/0x38
[cf82fef0] [c001524c] mark_initmem_nx+0x154/0x16c
[cf82ff20] [c001484c] free_initmem+0x20/0x4c
[cf82ff30] [c000316c] kernel_init+0x1c/0x108
[cf82ff40] [c000f3a8] ret_from_kernel_thread+0x5c/0x64
Instruction dump:
7c0803a6 7d808120 38210040 4e800020 3d20c052 812981a0 2f890000 40beffac
3d20c051 8929ac64 2f890000 40beff9c <0fe00000> 4bffff94 7fc3f378 7f64db78
Fixes: 3184cc4b6f6a ("powerpc/mm: Fix kernel RAM protection after freeing ...")
Fixes: e611939fc8ec ("powerpc/mm: Ensure change_page_attr() doesn't ...")
Cc: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Commit eac1e731b59e ("powerpc/xive: guest exploitation of the XIVE
interrupt controller") introduced support for the XIVE exploitation
mode of the P9 interrupt controller on the pseries platform.
At that time, support for CPU removal was not complete on PowerVM and
CPU hot unplug remained untested. It appears that some cleanups of the
XIVE internal structures are required before releasing the CPU,
without which the kernel crashes in a RTAS call doing the CPU
isolation.
These changes fix the crash by deconfiguring the IPI interrupt source
and clearing the event queues of the CPU when it is removed.
Fixes: eac1e731b59e ("powerpc/xive: guest exploitation of the XIVE interrupt controller")
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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When resetting an IPI, hw_ipi should also be set to zero.
Fixes: eac1e731b59e ("powerpc/xive: guest exploitation of the XIVE interrupt controller")
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Currently, NVMe PCI host driver is programming CMB dma address as
I/O SQs addresses. This results in failures on systems where 1:1
outbound mapping is not used (example Broadcom iProc SOCs) because
CMB BAR will be progammed with PCI bus address but NVMe PCI EP will
try to access CMB using dma address.
To have CMB working on systems without 1:1 outbound mapping, we
program PCI bus address for I/O SQs instead of dma address. This
approach will work on systems with/without 1:1 outbound mapping.
Based on a report and previous patch from Abhishek Shah.
Fixes: 8ffaadf7 ("NVMe: Use CMB for the IO SQes if available")
Cc: stable@vger.kernel.org
Reported-by: Abhishek Shah <abhishek.shah@broadcom.com>
Tested-by: Abhishek Shah <abhishek.shah@broadcom.com>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
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|
To declare gpio interrupt line for STMPE1600, 2 possibilities are offered:
-use gpio binding (and then the gpiolib interface inside driver)
-use interrupt binding as each gpio-controller are also interrupt controller
on stm32f429.
In STMPE 1600 node both (gpio and interrupt) bindings are defined.
This patch fixes this issue and use only interrupt binding.
Fixes: c04b2e72af8d ("ARM: dts: stm32: Enable STMPE1600 gpio expander of STM32F429-EVAL board")
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>
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The variable is unused when the softlockup detector is disabled in Kconfig.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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The function names made sense up to the point where the watchdog
(re)configuration was unified to use softlockup_reconfigure_threads() for
all configuration purposes. But that includes scenarios which solely
configure the nmi watchdog.
Rename softlockup_reconfigure_threads() and softlockup_init_threads() so
the function names match the functionality.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Linus Torvalds <torvalds@linuxfoundation.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Don Zickus <dzickus@redhat.com>
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The rework of the core hotplug code triggers the WARN_ON in start_wd_cpu()
on powerpc because it is called multiple times for the boot CPU.
The first call is via:
start_wd_on_cpu+0x80/0x2f0
watchdog_nmi_reconfigure+0x124/0x170
softlockup_reconfigure_threads+0x110/0x130
lockup_detector_init+0xbc/0xe0
kernel_init_freeable+0x18c/0x37c
kernel_init+0x2c/0x160
ret_from_kernel_thread+0x5c/0xbc
And then again via the CPU hotplug registration:
start_wd_on_cpu+0x80/0x2f0
cpuhp_invoke_callback+0x194/0x620
cpuhp_thread_fun+0x7c/0x1b0
smpboot_thread_fn+0x290/0x2a0
kthread+0x168/0x1b0
ret_from_kernel_thread+0x5c/0xbc
This can be avoided by setting up the cpu hotplug state with nocalls and
move the initialization to the watchdog_nmi_probe() function. That
initializes the hotplug callbacks without invoking the callback and the
following core initialization function then configures the watchdog for the
online CPUs (in this case CPU0) via softlockup_reconfigure_threads().
Reported-and-tested-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: linuxppc-dev@lists.ozlabs.org
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Instead of dropping the cpu hotplug lock after stopping NMI watchdog and
threads and reaquiring for restart, the code and the protection rules
become more obvious when holding cpu hotplug lock across the full
reconfiguration.
Suggested-by: Linus Torvalds <torvalds@linuxfoundation.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: linuxppc-dev@lists.ozlabs.org
Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1710022105570.2114@nanos
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The recent cleanup of the watchdog code split watchdog_nmi_reconfigure()
into two stages. One to stop the NMI and one to restart it after
reconfiguration. That was done by adding a boolean 'run' argument to the
code, which is functionally correct but not necessarily a piece of art.
Replace it by two explicit functions: watchdog_nmi_stop() and
watchdog_nmi_start().
Fixes: 6592ad2fcc8f ("watchdog/core, powerpc: Make watchdog_nmi_reconfigure() two stage")
Requested-by: Linus 'Nursing his pet-peeve' Torvalds <torvalds@linuxfoundation.org>
Signed-off-by: Thomas 'Mopping up garbage' Gleixner <tglx@linutronix.de>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: linuxppc-dev@lists.ozlabs.org
Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1710021957480.2114@nanos
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On Armada 7K/8K we need to explicitly enable the bus clock. The bus clock
is optional because not all the SoCs need them but at least for Armada
7K/8K it is actually mandatory.
The binding documentation is updating accordingly.
Without this patch the kernel hand during boot if the mvpp2.2 network
driver was not present in the kernel. Indeed the clock needed by the
xenon controller was set by the network driver.
Fixes: 3a3748dba881 ("mmc: sdhci-xenon: Add Marvell Xenon SDHC core
functionality)"
CC: Stable <stable@vger.kernel.org>
Tested-by: Zhoujie Wu <zjwu@marvell.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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It has been reported that some platforms (odroid-c2) may require
a different tx phase setting to operate at high speed (hs200 and hs400)
To improve the situation, this patch includes tx phase in the tuning
process.
Fixes: d341ca88eead ("mmc: meson-gx: rework tuning function")
Reported-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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Resetting the phase when POWER_ON is set the set_ios() call means that the
phase is reset almost every time the set_ios() is called, while the
expected behavior was to reset the phase on a power cycle.
This had gone unnoticed until now because in all mode (except hs400) the
tuning is done after the last to set_ios(). In such case, the tuning
result is used anyway. In HS400, there are a few calls to set_ios() after
the tuning is done, overwriting the tuning result.
Resetting the phase on POWER_UP instead of POWER_ON solve the problem.
Fixes: d341ca88eead ("mmc: meson-gx: rework tuning function")
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
|
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Using CLK_DIVIDER_ROUND_CLOSEST is unsafe as the mmc clock could be
rounded to a rate higher the specified rate. Removing this flag ensure
that, if the rate needs to be rounded, it will be rounded down.
Fixes: 51c5d8447bd7 ("MMC: meson: initial support for GX platforms")
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
|
|
In may, Steven sent a patch deleting the bounce buffer handling
and the CONFIG_MMC_BLOCK_BOUNCE option.
I chose the less invasive path of making it a runtime config
option, and we merged that successfully for kernel v4.12.
The code is however just standing in the way and taking up
space for seemingly no gain on any systems in wide use today.
Pierre says the code was there to improve speed on TI SDHCI
controllers on certain HP laptops and possibly some Ricoh
controllers as well. Early SDHCI controllers lacked the
scatter-gather feature, which made software bounce buffers
a significant speed boost.
We are clearly talking about the list of SDHCI PCI-based
MMC/SD card readers found in the pci_ids[] list in
drivers/mmc/host/sdhci-pci-core.c.
The TI SDHCI derivative is not supported by the upstream
kernel. This leaves the Ricoh.
What we can however notice is that the x86 defconfigs in the
kernel did not enable CONFIG_MMC_BLOCK_BOUNCE option, which
means that any such laptop would have to have a custom
configured kernel to actually take advantage of this
bounce buffer speed-up. It simply seems like there was
a speed optimization for the Ricoh controllers that noone
was using. (I have not checked the distro defconfigs but
I am pretty sure the situation is the same there.)
Bounce buffers increased performance on the OMAP HSMMC
at one point, and was part of the original submission in
commit a45c6cb81647 ("[ARM] 5369/1: omap mmc: Add new
omap hsmmc controller for 2430 and 34xx, v3")
This optimization was removed in
commit 0ccd76d4c236 ("omap_hsmmc: Implement scatter-gather
emulation")
which found that scatter-gather emulation provided even
better performance.
The same was introduced for SDHCI in
commit 2134a922c6e7 ("sdhci: scatter-gather (ADMA) support")
I am pretty positively convinced that software
scatter-gather emulation will do for any host controller what
the bounce buffers were doing. Essentially, the bounce buffer
was a reimplementation of software scatter-gather-emulation in
the MMC subsystem, and it should be done away with.
Cc: Pierre Ossman <pierre@ossman.eu>
Cc: Juha Yrjola <juha.yrjola@solidboot.com>
Cc: Steven J. Hill <Steven.Hill@cavium.com>
Cc: Shawn Lin <shawn.lin@rock-chips.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Suggested-by: Steven J. Hill <Steven.Hill@cavium.com>
Suggested-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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security_inode_getsecurity() provides the text string value
of a security attribute. It does not provide a "secctx".
The code in xattr_getsecurity() that calls security_inode_getsecurity()
and then calls security_release_secctx() happened to work because
SElinux and Smack treat the attribute and the secctx the same way.
It fails for cap_inode_getsecurity(), because that module has no
secctx that ever needs releasing. It turns out that Smack is the
one that's doing things wrong by not allocating memory when instructed
to do so by the "alloc" parameter.
The fix is simple enough. Change the security_release_secctx() to
kfree() because it isn't a secctx being returned by
security_inode_getsecurity(). Change Smack to allocate the string when
told to do so.
Note: this also fixes memory leaks for LSMs which implement
inode_getsecurity but not release_secctx, such as capabilities.
Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
Reported-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Cc: stable@vger.kernel.org
Signed-off-by: James Morris <james.l.morris@oracle.com>
|
|
If we got two AIO writes into a COW area the second one might not have any
COW extents left to convert. Handle that case gracefully instead of
triggering an assert or accessing beyond the bounds of the extent list.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
|
|
Since the CoW fork exists as a secondary data structure to the data
fork, we must always swap cow forks during swapext. We also need to
swap the extent counts and reset the cowblocks tags.
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
|
|
Add temporary fix to HSDK platform code to setup CPU frequency
to 1GHz on early boot.
We can remove this fix when smart hsdk pll driver will be
introduced, see discussion:
https://www.mail-archive.com/linux-snps-arc@lists.infradead.org/msg02689.html
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
|
|
Reported-by: Dmitrii Kolesnichenko <dmitrii@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
|
|
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
|
|
ARCv2 ISA_CONFIG and ARC700_BUILD build config registers are not
compatible. cpuinfo_arc had isa info placeholder which was mashup of bits
form both.
Untangle this by defining it off of ARCv2 ISA info and it is fine even
for ARC700 since former is a super set of latter (ARC700 buildonly has 2
bits for atomics and stack check).
At runtime, we treat ARCv2 ISA info as a generic placeholder but
populate it correctly depending on ARC700 or HS.
This paves way for adding more HS specific bits in isa info which was
colliding with the extra bits for arc700.
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
|
|
The top-level Makefile sets the default of UTS_MACHINE to $(ARCH).
If ARCH and UTS_MACHINE match, arch/$(ARCH)/Makefile need not specify
UTS_MACHINE explicitly.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
|
|
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
|
|
With corresponding clk driver now merged upstream, switch to it.
- core_clk now represent the PLL (vs. fixed clk before)
- input_clk represent the clk signal src for PLL (basically xtal)
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
|
|
Commit 92e5aae45778 "kernel/watchdog: split up config options"
introduced SOFTLOCKUP_DETECTOR which selects LOCKUP_DETECTOR
instead of the latter to be selected itself.
We need to adjust our defconfigs accordingly.
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
|
|
DW sdio controller has external ciu clock divider controlled
via register in SDIO IP. It divides sdio_ref_clk
(which comes from CGU) by 16 for default. So default mmcclk
clock (which comes to sdk_in) is 25000000 Hz.
So fix wrong current value (50000000 Hz) to actual 25000000 Hz.
Note this is a preventive fix, in line with similar change for HSDK
where this was actually needed. see:
http://lists.infradead.org/pipermail/linux-snps-arc/2017-September/002924.html
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
|
|
DW sdio controller has external ciu clock divider controlled via
register in SDIO IP. Due to its unexpected default value
(it should divide by 1 but it divides by 8)
SDIO IP uses wrong ciu clock and works unstable
So add temporary fix and change clock frequency from 100000000
to 12500000 Hz until we fix dw sdio driver itself.
Fixes SNPS STAR 9001204800
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
|
|
DW ethernet controller on AXS10x hangs sometimes after SW reset, so
add temporary quirk to reset DW ethernet controller IP core.
This quirk can be removed after axs10x reset driver
(see http://patchwork.ozlabs.org/patch/800273/)
or simple reset driver
(see https://patchwork.kernel.org/patch/9903375/)
will be available in upstream.
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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|
git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes
Fixes for omaps for v4.14-rc cycle
Few minor fixes for omaps, mostly just boot time warning fixes:
- Drop undocumented camera binding that got merged during the merge window by
accident as I applied before Sakari's comments
- Fix soft reset warning for dra7 kexec boot for gpio1 as the optional clocks
need to be enabled for reset
- Fix dra7 kexec boot clock rate for McASP as the rate is no longer the default
rate after kexec
- Fix omap3 pandora MMC warning during boot
- Add am33xx SPI alias like we have on other SoCs
- Remove node for non-existing CPSW EMAC Ethernet on am43xx-epos-evm
* tag 'omap-for-v4.14/fixes-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: dts: am43xx-epos-evm: Remove extra CPSW EMAC entry
ARM: dts: am33xx: Add spi alias to match SOC schematics
ARM: OMAP2+: hsmmc: fix logic to call either omap_hsmmc_init or omap_hsmmc_late_init but not both
ARM: dts: dra7: Set a default parent to mcasp3_ahclkx_mux
ARM: OMAP2+: dra7xx: Set OPT_CLKS_IN_RESET flag for gpio1
ARM: dts: nokia n900: drop unneeded/undocumented parts of the dts
Signed-off-by: Olof Johansson <olof@lixom.net>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into fixes
Adding the operating points on rk3368 like they were did not end up well
for the boards as all of them are missing their cpu supplies, the OPPs
actually need to follow the <target min max> format as the regulator is
shared between both clusters and the one rk3368 board I have, somehow also
doesn't like the higher opps at all - all of which I only realized after
I brought my rk3368 board online again, after its bootloader broke.
So we revert that OPP addition for now.
And also two fixes for the mipi dsi controller on rk3399, which was
referencing a clock to high up in the clock-tree so that an intermediate
gate could be disabled inadvertently and also needs a clock for its area
in the general register files of the rk3399 soc.
* tag 'v4.14-rockchip-dts64fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
arm64: dts: rockchip: add the grf clk for dw-mipi-dsi on rk3399
arm64: dts: rockchip: Correct MIPI DPHY PLL clock on rk3399
Revert "arm64: dts: rockchip: Add basic cpu frequencies for RK3368"
Signed-off-by: Olof Johansson <olof@lixom.net>
|
|
mvebu fixes for 4.14 (part 1)
Update MAINTAINERS for the Macchiatobin board (Armada 8K based)
Fix AP806 system controller size on Armada 7K/8K
* tag 'mvebu-fixes-4.14-1' of git://git.infradead.org/linux-mvebu:
arm64: dt marvell: Fix AP806 system controller size
MAINTAINERS: add Macchiatobin maintainers entry
Signed-off-by: Olof Johansson <olof@lixom.net>
|
|
into fixes
Reset controller fixes for v4.14
- Remove misleading HSDK v1 suffix, as there is no v2 planned
- Add missing DT binding documentation for HSDK reset driver
- Fix HSDK reset driver dependencies
* tag 'reset-fixes-for-4.14' of git://git.pengutronix.de/git/pza/linux:
reset: Restrict RESET_HSDK to ARC_SOC_HSDK or COMPILE_TEST
ARC: reset: remove the misleading v1 suffix all over
ARC: reset: add missing DT binding documentation for HSDKv1 reset driver
ARC: reset: Only build on archs that have IOMEM
Signed-off-by: Olof Johansson <olof@lixom.net>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into fixes
A fix for random ethernet mac address problem
on DA850 EVM.
* tag 'davinci-fixes-for-v4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci:
ARM: dts: da850-evm: add serial and ethernet aliases
Signed-off-by: Olof Johansson <olof@lixom.net>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/nferre/linux-at91 into fixes
Fixes for 4.14:
- three DT fixes for the newly introduced sama5d27_som1_ek board
- one treewide modification that didn't touch this new PM code: we
synchronize now to be coherent with the other ARM platforms
* tag 'at91-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nferre/linux-at91:
ARM: at91: Replace uses of virt_to_phys with __pa_symbol
ARM: dts: at91: sama5d27_som1_ek: fix USB host vbus
ARM: dts: at91: sama5d27_som1_ek: fix typos
ARM: dts: at91: sama5d27_som1_ek: update pinmux/pinconf for LEDs and USB
Signed-off-by: Olof Johansson <olof@lixom.net>
|
|
This updates the Gemini defconfig with drivers merged
for v4.13 or v4.14:
- ATA driver is merged
- DMA driver is merged
- RTC driver gets selected from default Kconfig
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
|
|
It is no longer possible to load this at runtime, so let's
change the few remaining users to have it built-in all
the time.
arch/arm/configs/zeus_defconfig:115:warning: symbol value 'm' invalid for FRAMEBUFFER_CONSOLE
arch/arm/configs/viper_defconfig:116:warning: symbol value 'm' invalid for FRAMEBUFFER_CONSOLE
arch/arm/configs/pxa_defconfig:474:warning: symbol value 'm' invalid for FRAMEBUFFER_CONSOLE
Reported-by: kernelci.org bot <bot@kernelci.org>
Fixes: 6104c37094e7 ("fbcon: Make fbcon a built-time depency for fbdev")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Olof Johansson <olof@lixom.net>
|
|
Before commit 9c5d760b8d22 ("mm: split gfp_mask and mapping flags into
separate fields") the private_* fields of struct adrress_space were
grouped together and using "ditto" in comments describing the last
fields was correct.
With introduction of gpf_mask between private_lock and private_list
"ditto" references the wrong description.
Fix it by using the elaborate description.
Link: http://lkml.kernel.org/r/1507009987-8746-1-git-send-email-rppt@linux.vnet.ibm.com
Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Cc: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
Currently running checkpatch on a directory with a cover-letter.patch
file reports the following error:
-----------------------------------------
patches/smp-v2/v2-0000-cover-letter.patch
-----------------------------------------
ERROR: Does not appear to be a unified-diff format patch
The logic to suppress the unified-diff check for cover letters is there
but is checking $file instead of $filename. Fix the variable to use the
correct one.
Link: http://lkml.kernel.org/r/20170909090406.31523-1-shorne@gmail.com
Signed-off-by: Stafford Horne <shorne@gmail.com>
Acked-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
The allmodconfig build of m32r is failing with the error:
lib/mpi/mpih-div.o: In function 'mpihelp_divrem':
mpih-div.c:(.text+0x40): undefined reference to 'abort'
mpih-div.c:(.text+0x40): relocation truncated to fit:
R_M32R_26_PCREL_RELA against undefined symbol 'abort'
The function 'abort' was never defined for the m32r architecture.
Create 'abort' as is done in other arch like 'arm' and 'unicore32'.
Link: http://lkml.kernel.org/r/1506727220-6108-1-git-send-email-sudip.mukherjee@codethink.co.uk
Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
printk_ratelimit() invokes ___ratelimit() which may invoke a normal
printk() (pr_warn() in this particular case) to warn about suppressed
output. Given that printk_ratelimit() may be called from anywhere, that
pr_warn() is dangerous - it may end up deadlocking the system. Fix
___ratelimit() by using deferred printk().
Sasha reported the following lockdep error:
: Unregister pv shared memory for cpu 8
: select_fallback_rq: 3 callbacks suppressed
: process 8583 (trinity-c78) no longer affine to cpu8
:
: ======================================================
: WARNING: possible circular locking dependency detected
: 4.14.0-rc2-next-20170927+ #252 Not tainted
: ------------------------------------------------------
: migration/8/62 is trying to acquire lock:
: (&port_lock_key){-.-.}, at: serial8250_console_write()
:
: but task is already holding lock:
: (&rq->lock){-.-.}, at: sched_cpu_dying()
:
: which lock already depends on the new lock.
:
:
: the existing dependency chain (in reverse order) is:
:
: -> #3 (&rq->lock){-.-.}:
: __lock_acquire()
: lock_acquire()
: _raw_spin_lock()
: task_fork_fair()
: sched_fork()
: copy_process.part.31()
: _do_fork()
: kernel_thread()
: rest_init()
: start_kernel()
: x86_64_start_reservations()
: x86_64_start_kernel()
: verify_cpu()
:
: -> #2 (&p->pi_lock){-.-.}:
: __lock_acquire()
: lock_acquire()
: _raw_spin_lock_irqsave()
: try_to_wake_up()
: default_wake_function()
: woken_wake_function()
: __wake_up_common()
: __wake_up_common_lock()
: __wake_up()
: tty_wakeup()
: tty_port_default_wakeup()
: tty_port_tty_wakeup()
: uart_write_wakeup()
: serial8250_tx_chars()
: serial8250_handle_irq.part.25()
: serial8250_default_handle_irq()
: serial8250_interrupt()
: __handle_irq_event_percpu()
: handle_irq_event_percpu()
: handle_irq_event()
: handle_level_irq()
: handle_irq()
: do_IRQ()
: ret_from_intr()
: native_safe_halt()
: default_idle()
: arch_cpu_idle()
: default_idle_call()
: do_idle()
: cpu_startup_entry()
: rest_init()
: start_kernel()
: x86_64_start_reservations()
: x86_64_start_kernel()
: verify_cpu()
:
: -> #1 (&tty->write_wait){-.-.}:
: __lock_acquire()
: lock_acquire()
: _raw_spin_lock_irqsave()
: __wake_up_common_lock()
: __wake_up()
: tty_wakeup()
: tty_port_default_wakeup()
: tty_port_tty_wakeup()
: uart_write_wakeup()
: serial8250_tx_chars()
: serial8250_handle_irq.part.25()
: serial8250_default_handle_irq()
: serial8250_interrupt()
: __handle_irq_event_percpu()
: handle_irq_event_percpu()
: handle_irq_event()
: handle_level_irq()
: handle_irq()
: do_IRQ()
: ret_from_intr()
: native_safe_halt()
: default_idle()
: arch_cpu_idle()
: default_idle_call()
: do_idle()
: cpu_startup_entry()
: rest_init()
: start_kernel()
: x86_64_start_reservations()
: x86_64_start_kernel()
: verify_cpu()
:
: -> #0 (&port_lock_key){-.-.}:
: check_prev_add()
: __lock_acquire()
: lock_acquire()
: _raw_spin_lock_irqsave()
: serial8250_console_write()
: univ8250_console_write()
: console_unlock()
: vprintk_emit()
: vprintk_default()
: vprintk_func()
: printk()
: ___ratelimit()
: __printk_ratelimit()
: select_fallback_rq()
: sched_cpu_dying()
: cpuhp_invoke_callback()
: take_cpu_down()
: multi_cpu_stop()
: cpu_stopper_thread()
: smpboot_thread_fn()
: kthread()
: ret_from_fork()
:
: other info that might help us debug this:
:
: Chain exists of:
: &port_lock_key --> &p->pi_lock --> &rq->lock
:
: Possible unsafe locking scenario:
:
: CPU0 CPU1
: ---- ----
: lock(&rq->lock);
: lock(&p->pi_lock);
: lock(&rq->lock);
: lock(&port_lock_key);
:
: *** DEADLOCK ***
:
: 4 locks held by migration/8/62:
: #0: (&p->pi_lock){-.-.}, at: sched_cpu_dying()
: #1: (&rq->lock){-.-.}, at: sched_cpu_dying()
: #2: (printk_ratelimit_state.lock){....}, at: ___ratelimit()
: #3: (console_lock){+.+.}, at: vprintk_emit()
:
: stack backtrace:
: CPU: 8 PID: 62 Comm: migration/8 Not tainted 4.14.0-rc2-next-20170927+ #252
: Call Trace:
: dump_stack()
: print_circular_bug()
: check_prev_add()
: ? add_lock_to_list.isra.26()
: ? check_usage()
: ? kvm_clock_read()
: ? kvm_sched_clock_read()
: ? sched_clock()
: ? check_preemption_disabled()
: __lock_acquire()
: ? __lock_acquire()
: ? add_lock_to_list.isra.26()
: ? debug_check_no_locks_freed()
: ? memcpy()
: lock_acquire()
: ? serial8250_console_write()
: _raw_spin_lock_irqsave()
: ? serial8250_console_write()
: serial8250_console_write()
: ? serial8250_start_tx()
: ? lock_acquire()
: ? memcpy()
: univ8250_console_write()
: console_unlock()
: ? __down_trylock_console_sem()
: vprintk_emit()
: vprintk_default()
: vprintk_func()
: printk()
: ? show_regs_print_info()
: ? lock_acquire()
: ___ratelimit()
: __printk_ratelimit()
: select_fallback_rq()
: sched_cpu_dying()
: ? sched_cpu_starting()
: ? rcutree_dying_cpu()
: ? sched_cpu_starting()
: cpuhp_invoke_callback()
: ? cpu_disable_common()
: take_cpu_down()
: ? trace_hardirqs_off_caller()
: ? cpuhp_invoke_callback()
: multi_cpu_stop()
: ? __this_cpu_preempt_check()
: ? cpu_stop_queue_work()
: cpu_stopper_thread()
: ? cpu_stop_create()
: smpboot_thread_fn()
: ? sort_range()
: ? schedule()
: ? __kthread_parkme()
: kthread()
: ? sort_range()
: ? kthread_create_on_node()
: ret_from_fork()
: process 9121 (trinity-c78) no longer affine to cpu8
: smpboot: CPU 8 is now offline
Link: http://lkml.kernel.org/r/20170928120405.18273-1-sergey.senozhatsky@gmail.com
Fixes: 6b1d174b0c27b ("ratelimit: extend to print suppressed messages on release")
Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Reported-by: Sasha Levin <levinsasha928@gmail.com>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Borislav Petkov <bp@suse.de>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
Align the parameters passed to STANDARD_PARAM_DEF for clarity.
Link: http://lkml.kernel.org/r/20170928162728.756143cc@endymion
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Suggested-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: Baoquan He <bhe@redhat.com>
Cc: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
Function param_attr_show could overflow the buffer it is operating on.
The buffer size is PAGE_SIZE, and the string returned by
attribute->param->ops->get is generated by scnprintf(buffer, PAGE_SIZE,
...) so it could be PAGE_SIZE - 1 long, with the terminating '\0' at the
very end of the buffer. Calling strcat(..., "\n") on this isn't safe, as
the '\0' will be replaced by '\n' (OK) and then another '\0' will be added
past the end of the buffer (not OK.)
Simply add the trailing '\n' when writing the attribute contents to the
buffer originally. This is safe, and also faster.
Credits to Teradata for discovering this issue.
Link: http://lkml.kernel.org/r/20170928162602.60c379c7@endymion
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: Baoquan He <bhe@redhat.com>
Cc: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
The length parameter of strlcpy() is supposed to reflect the size of the
target buffer, not of the source string. Harmless in this case as the
buffer is PAGE_SIZE long and the source string is always much shorter than
this, but conceptually wrong, so let's fix it.
Link: http://lkml.kernel.org/r/20170928162515.24846b4f@endymion
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: Baoquan He <bhe@redhat.com>
Cc: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
find_{smallest|biggest}_section_pfn()s find the smallest/biggest section
and return the pfn of the section. But the functions are defined as int.
So the functions always return 0x00000000 - 0xffffffff. It means if
memory address is over 16TB, the functions does not work correctly.
To handle 64 bit value, the patch defines
find_{smallest|biggest}_section_pfn() as unsigned long.
Fixes: 815121d2b5cd ("memory_hotplug: clear zone when removing the memory")
Link: http://lkml.kernel.org/r/d9d5593a-d0a4-c4be-ab08-493df59a85c6@gmail.com
Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Xishi Qiu <qiuxishi@huawei.com>
Cc: Reza Arbab <arbab@linux.vnet.ibm.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
inline function
pfn_to_section_nr() and section_nr_to_pfn() are defined as macro.
pfn_to_section_nr() has no issue even if it is defined as macro. But
section_nr_to_pfn() has overflow issue if sec is defined as int.
section_nr_to_pfn() just shifts sec by PFN_SECTION_SHIFT. If sec is
defined as unsigned long, section_nr_to_pfn() returns pfn as 64 bit value.
But if sec is defined as int, section_nr_to_pfn() returns pfn as 32 bit
value.
__remove_section() calculates start_pfn using section_nr_to_pfn() and
scn_nr defined as int. So if hot-removed memory address is over 16TB,
overflow issue occurs and section_nr_to_pfn() does not calculate correct
pfn.
To make callers use proper arg, the patch changes the macros to inline
functions.
Fixes: 815121d2b5cd ("memory_hotplug: clear zone when removing the memory")
Link: http://lkml.kernel.org/r/e643a387-e573-6bbf-d418-c60c8ee3d15e@gmail.com
Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Xishi Qiu <qiuxishi@huawei.com>
Cc: Reza Arbab <arbab@linux.vnet.ibm.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
The else branch been left over and escaped the source code refresh. Not
a problem but better clean it up.
Fixes: 0791e3644e5e ("kcmp: add KCMP_EPOLL_TFD mode to compare epoll target files")
Link: http://lkml.kernel.org/r/20170917165838.GA1887@uranus.lan
Reported-by: Eugene Syromiatnikov <esyr@redhat.com>
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Acked-by: Andrei Vagin <avagin@virtuozzo.com>
Cc: Pavel Emelyanov <xemul@virtuozzo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
devm_memremap_pages is initializing struct pages in for_each_device_pfn
and that can take quite some time. We have even seen a soft lockup
triggering on a non preemptive kernel
NMI watchdog: BUG: soft lockup - CPU#61 stuck for 22s! [kworker/u641:11:1808]
[...]
RIP: 0010:[<ffffffff8118b6b7>] [<ffffffff8118b6b7>] devm_memremap_pages+0x327/0x430
[...]
Call Trace:
pmem_attach_disk+0x2fd/0x3f0 [nd_pmem]
nvdimm_bus_probe+0x64/0x110 [libnvdimm]
driver_probe_device+0x1f7/0x420
bus_for_each_drv+0x52/0x80
__device_attach+0xb0/0x130
bus_probe_device+0x87/0xa0
device_add+0x3fc/0x5f0
nd_async_device_register+0xe/0x40 [libnvdimm]
async_run_entry_fn+0x43/0x150
process_one_work+0x14e/0x410
worker_thread+0x116/0x490
kthread+0xc7/0xe0
ret_from_fork+0x3f/0x70
fix this by adding cond_resched every 1024 pages.
Link: http://lkml.kernel.org/r/20170918121410.24466-4-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Reported-by: Johannes Thumshirn <jthumshirn@suse.de>
Tested-by: Johannes Thumshirn <jthumshirn@suse.de>
Cc: Dan Williams <dan.j.williams@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
memmap_init_zone gets a pfn range to initialize and it can be really
large resulting in a soft lockup on non-preemptible kernels
NMI watchdog: BUG: soft lockup - CPU#31 stuck for 23s! [kworker/u642:5:1720]
[...]
task: ffff88ecd7e902c0 ti: ffff88eca4e50000 task.ti: ffff88eca4e50000
RIP: move_pfn_range_to_zone+0x185/0x1d0
[...]
Call Trace:
devm_memremap_pages+0x2c7/0x430
pmem_attach_disk+0x2fd/0x3f0 [nd_pmem]
nvdimm_bus_probe+0x64/0x110 [libnvdimm]
driver_probe_device+0x1f7/0x420
bus_for_each_drv+0x52/0x80
__device_attach+0xb0/0x130
bus_probe_device+0x87/0xa0
device_add+0x3fc/0x5f0
nd_async_device_register+0xe/0x40 [libnvdimm]
async_run_entry_fn+0x43/0x150
process_one_work+0x14e/0x410
worker_thread+0x116/0x490
kthread+0xc7/0xe0
ret_from_fork+0x3f/0x70
Fix this by adding a scheduling point once per page block.
Link: http://lkml.kernel.org/r/20170918121410.24466-3-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Reported-by: Johannes Thumshirn <jthumshirn@suse.de>
Tested-by: Johannes Thumshirn <jthumshirn@suse.de>
Cc: Dan Williams <dan.j.williams@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
Patch series "mm, memory_hotplug: fix few soft lockups in memory
hotadd".
Johannes has noticed few soft lockups when adding a large nvdimm device.
All of them were caused by a long loop without any explicit cond_resched
which is a problem for !PREEMPT kernels.
The fix is quite straightforward. Just make sure that cond_resched gets
called from time to time.
This patch (of 3):
__add_pages gets a pfn range to add and there is no upper bound for a
single call. This is usually a memory block aligned size for the
regular memory hotplug - smaller sizes are usual for memory balloning
drivers, or the whole NUMA node for physical memory online. There is no
explicit scheduling point in that code path though.
This can lead to long latencies while __add_pages is executed and we
have even seen a soft lockup report during nvdimm initialization with
!PREEMPT kernel
NMI watchdog: BUG: soft lockup - CPU#11 stuck for 23s! [kworker/u641:3:832]
[...]
Workqueue: events_unbound async_run_entry_fn
task: ffff881809270f40 ti: ffff881809274000 task.ti: ffff881809274000
RIP: _raw_spin_unlock_irqrestore+0x11/0x20
RSP: 0018:ffff881809277b10 EFLAGS: 00000286
[...]
Call Trace:
sparse_add_one_section+0x13d/0x18e
__add_pages+0x10a/0x1d0
arch_add_memory+0x4a/0xc0
devm_memremap_pages+0x29d/0x430
pmem_attach_disk+0x2fd/0x3f0 [nd_pmem]
nvdimm_bus_probe+0x64/0x110 [libnvdimm]
driver_probe_device+0x1f7/0x420
bus_for_each_drv+0x52/0x80
__device_attach+0xb0/0x130
bus_probe_device+0x87/0xa0
device_add+0x3fc/0x5f0
nd_async_device_register+0xe/0x40 [libnvdimm]
async_run_entry_fn+0x43/0x150
process_one_work+0x14e/0x410
worker_thread+0x116/0x490
kthread+0xc7/0xe0
ret_from_fork+0x3f/0x70
DWARF2 unwinder stuck at ret_from_fork+0x3f/0x70
Fix this by adding cond_resched once per each memory section in the
given pfn range. Each section is constant amount of work which itself
is not too expensive but many of them will just add up.
Link: http://lkml.kernel.org/r/20170918121410.24466-2-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Reported-by: Johannes Thumshirn <jthumshirn@suse.de>
Tested-by: Johannes Thumshirn <jthumshirn@suse.de>
Cc: Dan Williams <dan.j.williams@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
idr_replace() returns the old value on success, not 0.
Link: http://lkml.kernel.org/r/20170918162642.37511-1-ebiggers3@gmail.com
Signed-off-by: Eric Biggers <ebiggers@google.com>
Cc: Matthew Wilcox <mawilcox@microsoft.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
For quick per-memcg indexing, slab caches and list_lru structures
maintain linear arrays of descriptors. As the number of concurrent
memory cgroups in the system goes up, this requires large contiguous
allocations (8k cgroups = order-5, 16k cgroups = order-6 etc.) for every
existing slab cache and list_lru, which can easily fail on loaded
systems. E.g.:
mkdir: page allocation failure: order:5, mode:0x14040c0(GFP_KERNEL|__GFP_COMP), nodemask=(null)
CPU: 1 PID: 6399 Comm: mkdir Not tainted 4.13.0-mm1-00065-g720bbe532b7c-dirty #481
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-20170228_101828-anatol 04/01/2014
Call Trace:
? __alloc_pages_direct_compact+0x4c/0x110
__alloc_pages_nodemask+0xf50/0x1430
alloc_pages_current+0x60/0xc0
kmalloc_order_trace+0x29/0x1b0
__kmalloc+0x1f4/0x320
memcg_update_all_list_lrus+0xca/0x2e0
mem_cgroup_css_alloc+0x612/0x670
cgroup_apply_control_enable+0x19e/0x360
cgroup_mkdir+0x322/0x490
kernfs_iop_mkdir+0x55/0x80
vfs_mkdir+0xd0/0x120
SyS_mkdirat+0x6c/0xe0
SyS_mkdir+0x14/0x20
entry_SYSCALL_64_fastpath+0x18/0xad
Mem-Info:
active_anon:2965 inactive_anon:19 isolated_anon:0
active_file:100270 inactive_file:98846 isolated_file:0
unevictable:0 dirty:0 writeback:0 unstable:0
slab_reclaimable:7328 slab_unreclaimable:16402
mapped:771 shmem:52 pagetables:278 bounce:0
free:13718 free_pcp:0 free_cma:0
This output is from an artificial reproducer, but we have repeatedly
observed order-7 failures in production in the Facebook fleet. These
systems become useless as they cannot run more jobs, even though there
is plenty of memory to allocate 128 individual pages.
Use kvmalloc and kvzalloc to fall back to vmalloc space if these arrays
prove too large for allocating them physically contiguous.
Link: http://lkml.kernel.org/r/20170918184919.20644-1-hannes@cmpxchg.org
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Josef Bacik <jbacik@fb.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Vladimir Davydov <vdavydov.dev@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
do_proc_douintvec_conv() has two UINT_MAX checks, we can remove one.
This has no functional changes other than fixing a compiler warning:
kernel/sysctl.c:2190]: (warning) Identical condition '*lvalp>UINT_MAX', second condition is always false
Fixes: 4f2fec00afa60 ("sysctl: simplify unsigned int support")
Link: http://lkml.kernel.org/r/20170919072918.12066-1-mcgrof@kernel.org
Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org>
Reported-by: David Binderman <dcb314@hotmail.com>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
I do not see anything that restricts this macro to 32 bit width.
Link: http://lkml.kernel.org/r/1505921975-23379-1-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
Don't populate the read-only arrays dec32table and dec64table on the
stack, instead make them both static const. Makes the object code
smaller by over 10K bytes:
Before:
text data bss dec hex filename
31500 0 0 31500 7b0c lib/lz4/lz4_decompress.o
After:
text data bss dec hex filename
20237 176 0 20413 4fbd lib/lz4/lz4_decompress.o
(gcc version 7.2.0 x86_64)
Link: http://lkml.kernel.org/r/20170921221939.20820-1-colin.king@canonical.com
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Cc: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Cc: Sven Schmidt <4sschmid@informatik.uni-hamburg.de>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
After the previous change "fmt" can't go away, we can kill
iname/iname_addr and use fmt->interpreter.
Link: http://lkml.kernel.org/r/20170922143653.GA17232@redhat.com
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Kees Cook <keescook@chromium.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Ben Woodard <woodard@redhat.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Jim Foraker <foraker1@llnl.gov>
Cc: <tdhooge@llnl.gov>
Cc: Travis Gummels <tgummels@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
load_misc_binary() makes a local copy of fmt->interpreter under
entries_lock to avoid the race with kill_node() but this is not enough;
the whole Node can be freed after we drop entries_lock, not only the
->interpreter string.
Add dget/dput(fmt->dentry) to ensure bm_evict_inode() can't destroy/free
this Node.
Link: http://lkml.kernel.org/r/20170922143650.GA17227@redhat.com
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Kees Cook <keescook@chromium.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Ben Woodard <woodard@redhat.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Jim Foraker <foraker1@llnl.gov>
Cc: Travis Gummels <tgummels@redhat.com>
Cc: <tdhooge@llnl.gov>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
If MISC_FMT_OPEN_FILE flag is set e->interp_file must be valid or we
have a bug which should not be silently ignored.
Link: http://lkml.kernel.org/r/20170922143647.GA17222@redhat.com
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Kees Cook <keescook@chromium.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Ben Woodard <woodard@redhat.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Jim Foraker <foraker1@llnl.gov>
Cc: <tdhooge@llnl.gov>
Cc: Travis Gummels <tgummels@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
bm_evict_inode()
To ensure that load_misc_binary() can't use the partially destroyed
Node, see also the next patch.
The current logic looks wrong in any case, once we close interp_file it
doesn't make any sense to delay kfree(inode->i_private), this Node is no
longer valid. Even if the MISC_FMT_OPEN_FILE/interp_file checks were
not racy (they are), load_misc_binary() should not try to reopen
->interpreter if MISC_FMT_OPEN_FILE is set but ->interp_file is NULL.
And I can't understand why do we use filp_close(), not fput().
Link: http://lkml.kernel.org/r/20170922143644.GA17216@redhat.com
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Kees Cook <keescook@chromium.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Ben Woodard <woodard@redhat.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Jim Foraker <foraker1@llnl.gov>
Cc: <tdhooge@llnl.gov>
Cc: Travis Gummels <tgummels@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
kill_node() nullifies/checks Node->dentry to avoid double free. This
complicates the next changes and this is very confusing:
- we do not need to check dentry != NULL under entries_lock,
kill_node() is always called under inode_lock(d_inode(root)) and we
rely on this inode_lock() anyway, without this lock the
MISC_FMT_OPEN_FILE cleanup could race with itself.
- if kill_inode() was already called and ->dentry == NULL we should not
even try to close e->interp_file.
We can change bm_entry_write() to simply check !list_empty(list) before
kill_node. Again, we rely on inode_lock(), in particular it saves us
from the race with bm_status_write(), another caller of kill_node().
Link: http://lkml.kernel.org/r/20170922143641.GA17210@redhat.com
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Kees Cook <keescook@chromium.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Ben Woodard <woodard@redhat.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Jim Foraker <foraker1@llnl.gov>
Cc: <tdhooge@llnl.gov>
Cc: Travis Gummels <tgummels@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
Patch series "exec: binfmt_misc: fix use-after-free, kill
iname[BINPRM_BUF_SIZE]".
It looks like this code was always wrong, then commit 948b701a607f
("binfmt_misc: add persistent opened binary handler for containers")
added more problems.
This patch (of 6):
load_script() can simply use i_name instead, it points into bprm->buf[]
and nobody can change this memory until we call prepare_binprm().
The only complication is that we need to also change the signature of
bprm_change_interp() but this change looks good too.
While at it, do whitespace/style cleanups.
NOTE: the real motivation for this change is that people want to
increase BINPRM_BUF_SIZE, we need to change load_misc_binary() too but
this looks more complicated because afaics it is very buggy.
Link: http://lkml.kernel.org/r/20170918163446.GA26793@redhat.com
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Kees Cook <keescook@chromium.org>
Cc: Travis Gummels <tgummels@redhat.com>
Cc: Ben Woodard <woodard@redhat.com>
Cc: Jim Foraker <foraker1@llnl.gov>
Cc: <tdhooge@llnl.gov>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
When reading the event from the uffd, we put it on a temporary
fork_event list to detect if we can still access it after releasing and
retaking the event_wqh.lock.
If fork aborts and removes the event from the fork_event all is fine as
long as we're still in the userfault read context and fork_event head is
still alive.
We've to put the event allocated in the fork kernel stack, back from
fork_event list-head to the event_wqh head, before returning from
userfaultfd_ctx_read, because the fork_event head lifetime is limited to
the userfaultfd_ctx_read stack lifetime.
Forgetting to move the event back to its event_wqh place then results in
__remove_wait_queue(&ctx->event_wqh, &ewq->wq); in
userfaultfd_event_wait_completion to remove it from a head that has been
already freed from the reader stack.
This could only happen if resolve_userfault_fork failed (for example if
there are no file descriptors available to allocate the fork uffd). If
it succeeded it was put back correctly.
Furthermore, after find_userfault_evt receives a fork event, the forked
userfault context in fork_nctx and uwq->msg.arg.reserved.reserved1 can
be released by the fork thread as soon as the event_wqh.lock is
released. Taking a reference on the fork_nctx before dropping the lock
prevents an use after free in resolve_userfault_fork().
If the fork side aborted and it already released everything, we still
try to succeed resolve_userfault_fork(), if possible.
Fixes: 893e26e61d04eac9 ("userfaultfd: non-cooperative: Add fork() event")
Link: http://lkml.kernel.org/r/20170920180413.26713-1-aarcange@redhat.com
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Reported-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Mark Rutland <mark.rutland@arm.com>
Cc: Pavel Emelyanov <xemul@virtuozzo.com>
Cc: Mike Rapoport <rppt@linux.vnet.ibm.com>
Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
With device public pages at the end of my memory space, I'm getting
output from _vm_normal_page():
BUG: Bad page map in process migrate_pages pte:c0800001ffff0d06 pmd:f95d3000
addr:00007fff89330000 vm_flags:00100073 anon_vma:c0000000fa899320 mapping: (null) index:7fff8933
file: (null) fault: (null) mmap: (null) readpage: (null)
CPU: 0 PID: 13963 Comm: migrate_pages Tainted: P B OE 4.14.0-rc1-wip #155
Call Trace:
dump_stack+0xb0/0xf4 (unreliable)
print_bad_pte+0x28c/0x340
_vm_normal_page+0xc0/0x140
zap_pte_range+0x664/0xc10
unmap_page_range+0x318/0x670
unmap_vmas+0x74/0xe0
exit_mmap+0xe8/0x1f0
mmput+0xac/0x1f0
do_exit+0x348/0xcd0
do_group_exit+0x5c/0xf0
SyS_exit_group+0x1c/0x20
system_call+0x58/0x6c
The pfn causing this is the very last one. Correct the bounds check
accordingly.
Fixes: df6ad69838fc ("mm/device-public-memory: device memory cache coherent with CPU")
Link: http://lkml.kernel.org/r/1506092178-20351-1-git-send-email-arbab@linux.vnet.ibm.com
Signed-off-by: Reza Arbab <arbab@linux.vnet.ibm.com>
Reviewed-by: Jérôme Glisse <jglisse@redhat.com>
Reviewed-by: Balbir Singh <bsingharora@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
MADV_FREE clears pte dirty bit and then marks the page lazyfree (clear
SwapBacked). There is no lock to prevent the page is added to swap
cache between these two steps by page reclaim. If page reclaim finds
such page, it will simply add the page to swap cache without pageout the
page to swap because the page is marked as clean. Next time, page fault
will read data from the swap slot which doesn't have the original data,
so we have a data corruption. To fix issue, we mark the page dirty and
pageout the page.
However, we shouldn't dirty all pages which is clean and in swap cache.
swapin page is swap cache and clean too. So we only dirty page which is
added into swap cache in page reclaim, which shouldn't be swapin page.
As Minchan suggested, simply dirty the page in add_to_swap can do the
job.
Fixes: 802a3a92ad7a ("mm: reclaim MADV_FREE pages")
Link: http://lkml.kernel.org/r/08c84256b007bf3f63c91d94383bd9eb6fee2daa.1506446061.git.shli@fb.com
Signed-off-by: Shaohua Li <shli@fb.com>
Reported-by: Artem Savkov <asavkov@redhat.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Hillf Danton <hdanton@sina.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: <stable@vger.kernel.org> [4.12+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
MADV_FREE clears pte dirty bit and then marks the page lazyfree (clear
SwapBacked). There is no lock to prevent the page is added to swap
cache between these two steps by page reclaim. Page reclaim could add
the page to swap cache and unmap the page. After page reclaim, the page
is added back to lru. At that time, we probably start draining per-cpu
pagevec and mark the page lazyfree. So the page could be in a state
with SwapBacked cleared and PG_swapcache set. Next time there is a
refault in the virtual address, do_swap_page can find the page from swap
cache but the page has PageSwapCache false because SwapBacked isn't set,
so do_swap_page will bail out and do nothing. The task will keep
running into fault handler.
Fixes: 802a3a92ad7a ("mm: reclaim MADV_FREE pages")
Link: http://lkml.kernel.org/r/6537ef3814398c0073630b03f176263bc81f0902.1506446061.git.shli@fb.com
Signed-off-by: Shaohua Li <shli@fb.com>
Reported-by: Artem Savkov <asavkov@redhat.com>
Tested-by: Artem Savkov <asavkov@redhat.com>
Reviewed-by: Rik van Riel <riel@redhat.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Cc: Hillf Danton <hdanton@sina.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: <stable@vger.kernel.org> [4.12+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
Eryu noticed that he could sometimes get a leftover error reported when
it shouldn't be on fsync with ext2 and non-journalled ext4.
The problem is that writeback_single_inode still uses filemap_fdatawait.
That picks up a previously set AS_EIO flag, which would ordinarily have
been cleared before.
Since we're mostly using this function as a replacement for
filemap_check_errors, have filemap_check_and_advance_wb_err clear AS_EIO
and AS_ENOSPC when reporting an error. That should allow the new
function to better emulate the behavior of the old with respect to these
flags.
Link: http://lkml.kernel.org/r/20170922133331.28812-1-jlayton@kernel.org
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Reported-by: Eryu Guan <eguan@redhat.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
The build of m32r allmodconfig is giving lots of build warnings about:
include/linux/byteorder/big_endian.h:7:2:
warning: #warning inconsistent configuration,
needs CONFIG_CPU_BIG_ENDIAN [-Wcpp]
#warning inconsistent configuration, needs CONFIG_CPU_BIG_ENDIAN
Define CPU_BIG_ENDIAN like the way CPU_LITTLE_ENDIAN is defined.
Link: http://lkml.kernel.org/r/1505678083-10320-1-git-send-email-sudipm.mukherjee@gmail.com
Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
In testing I found handle passed to zs_map_object in __zram_bvec_read is
NULL so eh kernel goes oops in pin_object().
The reason is there is no routine to check the slot's freeing after
getting the slot's lock. This patch fixes it.
[minchan@kernel.org: v2]
Link: http://lkml.kernel.org/r/1505887347-10881-1-git-send-email-minchan@kernel.org
Link: http://lkml.kernel.org/r/1505788488-26723-1-git-send-email-minchan@kernel.org
Fixes: 1f7319c74275 ("zram: partial IO refactoring")
Signed-off-by: Minchan Kim <minchan@kernel.org>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
On powerpc, RODATA_TEST fails with message the following messages:
Freeing unused kernel memory: 528K
rodata_test: test data was not read only
This is because GCC allocates it to .data section:
c0695034 g O .data 00000004 rodata_test_data
Since commit 056b9d8a7692 ("mm: remove rodata_test_data export, add
pr_fmt"), rodata_test_data is used only inside rodata_test.c By
declaring it static, it gets properly allocated into .rodata section
instead of .data:
c04df710 l O .rodata 00000004 rodata_test_data
Fixes: 056b9d8a7692 ("mm: remove rodata_test_data export, add pr_fmt")
Link: http://lkml.kernel.org/r/20170921093729.1080368AC1@po15668-vm-win7.idsi0.si.c-s.fr
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Cc: Kees Cook <keescook@chromium.org>
Cc: Jinbum Park <jinb.park7@gmail.com>
Cc: Segher Boessenkool <segher@kernel.crashing.org>
Cc: David Laight <David.Laight@ACULAB.COM>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
Locking of config and doorbell operations should be done only if the
underlying hardware requires it.
This patch removes the global spinlocks from the rapidio subsystem and
moves them to the mport drivers (fsl_rio and tsi721), only to the
necessary places. For example, local config space read and write
operations (lcread/lcwrite) are atomic in all existing drivers, so there
should be no need for locking, while the cread/cwrite operations which
generate maintenance transactions need to be synchronized with a lock.
Later, each driver could chose to use a per-port lock instead of a
global one, or even more granular locking.
Link: http://lkml.kernel.org/r/20170824113023.GD50104@nokia.com
Signed-off-by: Ioan Nicu <ioan.nicu.ext@nokia.com>
Signed-off-by: Frank Kunz <frank.kunz@nokia.com>
Acked-by: Alexandre Bounine <alexandre.bounine@idt.com>
Cc: Matt Porter <mporter@kernel.crashing.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
The function is called from __meminit context and calls other __meminit
functions but isn't it self mark as such today:
WARNING: vmlinux.o(.text.unlikely+0x4516): Section mismatch in reference from the function init_reserved_page() to the function .meminit.text:early_pfn_to_nid()
The function init_reserved_page() references the function __meminit early_pfn_to_nid().
This is often because init_reserved_page lacks a __meminit annotation or the annotation of early_pfn_to_nid is wrong.
On most compilers, we don't notice this because the function gets
inlined all the time. Adding __meminit here fixes the harmless warning
for the old versions and is generally the correct annotation.
Link: http://lkml.kernel.org/r/20170915193149.901180-1-arnd@arndb.de
Fixes: 7e18adb4f80b ("mm: meminit: initialise remaining struct pages in parallel with kswapd")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
Fix the situation when clear_bit() is called for page->private before
the page pointer is actually assigned. While at it, remove work_busy()
check because it is costly and does not give 100% guarantee anyway.
Signed-off-by: Vitaly Wool <vitalywool@gmail.com>
Cc: Dan Streetman <ddstreet@ieee.org>
Cc: <Oleksiy.Avramchenko@sony.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
Andrea brought to my attention that the L->{L,S} guarantees are
completely bogus for this case. I was looking at the diagram, from the
offending commit, when that _is_ the race, we had the load reordered
already.
What we need is at least S->L semantics, thus simply use
wq_has_sleeper() to serialize the call for good.
Link: http://lkml.kernel.org/r/20170914175313.GB811@linux-80c1.suse
Fixes: 46acef048a6 (mm,compaction: serialize waitqueue_active() checks)
Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Reported-by: Andrea Parri <parri.andrea@gmail.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
Drop the global lru lock in isolate callback before calling
zap_page_range which calls cond_resched, and re-acquire the global lru
lock before returning. Also change return code to LRU_REMOVED_RETRY.
Use mmput_async when fail to acquire mmap sem in an atomic context.
Fix "BUG: sleeping function called from invalid context"
errors when CONFIG_DEBUG_ATOMIC_SLEEP is enabled.
Also restore mmput_async, which was initially introduced in commit
ec8d7c14ea14 ("mm, oom_reaper: do not mmput synchronously from the oom
reaper context"), and was removed in commit 212925802454 ("mm: oom: let
oom_reap_task and exit_mmap run concurrently").
Link: http://lkml.kernel.org/r/20170914182231.90908-1-sherryy@android.com
Fixes: f2517eb76f1f2 ("android: binder: Add global lru shrinker to binder")
Signed-off-by: Sherry Yang <sherryy@android.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reported-by: Kyle Yan <kyan@codeaurora.org>
Acked-by: Arve Hjønnevåg <arve@android.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Martijn Coenen <maco@google.com>
Cc: Todd Kjos <tkjos@google.com>
Cc: Riley Andrews <riandrews@android.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Hillf Danton <hdanton@sina.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Hoeun Ryu <hoeun.ryu@gmail.com>
Cc: Christopher Lameter <cl@linux.com>
Cc: Vegard Nossum <vegard.nossum@oracle.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
Fix for 4.14, zone device page always have an elevated refcount of one
and thus page count sanity check in uncharge_page() is inappropriate for
them.
[mhocko@suse.com: nano-optimize VM_BUG_ON in uncharge_page]
Link: http://lkml.kernel.org/r/20170914190011.5217-1-jglisse@redhat.com
Signed-off-by: Jérôme Glisse <jglisse@redhat.com>
Signed-off-by: Michal Hocko <mhocko@suse.com>
Reported-by: Evgeny Baskakov <ebaskakov@nvidia.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
The following lockdep splat has been noticed during LTP testing
======================================================
WARNING: possible circular locking dependency detected
4.13.0-rc3-next-20170807 #12 Not tainted
------------------------------------------------------
a.out/4771 is trying to acquire lock:
(cpu_hotplug_lock.rw_sem){++++++}, at: [<ffffffff812b4668>] drain_all_stock.part.35+0x18/0x140
but task is already holding lock:
(&mm->mmap_sem){++++++}, at: [<ffffffff8106eb35>] __do_page_fault+0x175/0x530
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #3 (&mm->mmap_sem){++++++}:
lock_acquire+0xc9/0x230
__might_fault+0x70/0xa0
_copy_to_user+0x23/0x70
filldir+0xa7/0x110
xfs_dir2_sf_getdents.isra.10+0x20c/0x2c0 [xfs]
xfs_readdir+0x1fa/0x2c0 [xfs]
xfs_file_readdir+0x30/0x40 [xfs]
iterate_dir+0x17a/0x1a0
SyS_getdents+0xb0/0x160
entry_SYSCALL_64_fastpath+0x1f/0xbe
-> #2 (&type->i_mutex_dir_key#3){++++++}:
lock_acquire+0xc9/0x230
down_read+0x51/0xb0
lookup_slow+0xde/0x210
walk_component+0x160/0x250
link_path_walk+0x1a6/0x610
path_openat+0xe4/0xd50
do_filp_open+0x91/0x100
file_open_name+0xf5/0x130
filp_open+0x33/0x50
kernel_read_file_from_path+0x39/0x80
_request_firmware+0x39f/0x880
request_firmware_direct+0x37/0x50
request_microcode_fw+0x64/0xe0
reload_store+0xf7/0x180
dev_attr_store+0x18/0x30
sysfs_kf_write+0x44/0x60
kernfs_fop_write+0x113/0x1a0
__vfs_write+0x37/0x170
vfs_write+0xc7/0x1c0
SyS_write+0x58/0xc0
do_syscall_64+0x6c/0x1f0
return_from_SYSCALL_64+0x0/0x7a
-> #1 (microcode_mutex){+.+.+.}:
lock_acquire+0xc9/0x230
__mutex_lock+0x88/0x960
mutex_lock_nested+0x1b/0x20
microcode_init+0xbb/0x208
do_one_initcall+0x51/0x1a9
kernel_init_freeable+0x208/0x2a7
kernel_init+0xe/0x104
ret_from_fork+0x2a/0x40
-> #0 (cpu_hotplug_lock.rw_sem){++++++}:
__lock_acquire+0x153c/0x1550
lock_acquire+0xc9/0x230
cpus_read_lock+0x4b/0x90
drain_all_stock.part.35+0x18/0x140
try_charge+0x3ab/0x6e0
mem_cgroup_try_charge+0x7f/0x2c0
shmem_getpage_gfp+0x25f/0x1050
shmem_fault+0x96/0x200
__do_fault+0x1e/0xa0
__handle_mm_fault+0x9c3/0xe00
handle_mm_fault+0x16e/0x380
__do_page_fault+0x24a/0x530
do_page_fault+0x30/0x80
page_fault+0x28/0x30
other info that might help us debug this:
Chain exists of:
cpu_hotplug_lock.rw_sem --> &type->i_mutex_dir_key#3 --> &mm->mmap_sem
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&mm->mmap_sem);
lock(&type->i_mutex_dir_key#3);
lock(&mm->mmap_sem);
lock(cpu_hotplug_lock.rw_sem);
*** DEADLOCK ***
2 locks held by a.out/4771:
#0: (&mm->mmap_sem){++++++}, at: [<ffffffff8106eb35>] __do_page_fault+0x175/0x530
#1: (percpu_charge_mutex){+.+...}, at: [<ffffffff812b4c97>] try_charge+0x397/0x6e0
The problem is very similar to the one fixed by commit a459eeb7b852
("mm, page_alloc: do not depend on cpu hotplug locks inside the
allocator"). We are taking hotplug locks while we can be sitting on top
of basically arbitrary locks. This just calls for problems.
We can get rid of {get,put}_online_cpus, fortunately. We do not have to
be worried about races with memory hotplug because drain_local_stock,
which is called from both the WQ draining and the memory hotplug
contexts, is always operating on the local cpu stock with IRQs disabled.
The only thing to be careful about is that the target memcg doesn't
vanish while we are still in drain_all_stock so take a reference on it.
Link: http://lkml.kernel.org/r/20170913090023.28322-1-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Reported-by: Artem Savkov <asavkov@redhat.com>
Tested-by: Artem Savkov <asavkov@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
Andrea has noticed that the oom_reaper doesn't invalidate the range via
mmu notifiers (mmu_notifier_invalidate_range_start/end) and that can
corrupt the memory of the kvm guest for example.
tlb_flush_mmu_tlbonly already invokes mmu notifiers but that is not
sufficient as per Andrea:
"mmu_notifier_invalidate_range cannot be used in replacement of
mmu_notifier_invalidate_range_start/end. For KVM
mmu_notifier_invalidate_range is a noop and rightfully so. A MMU
notifier implementation has to implement either ->invalidate_range
method or the invalidate_range_start/end methods, not both. And if you
implement invalidate_range_start/end like KVM is forced to do, calling
mmu_notifier_invalidate_range in common code is a noop for KVM.
For those MMU notifiers that can get away only implementing
->invalidate_range, the ->invalidate_range is implicitly called by
mmu_notifier_invalidate_range_end(). And only those secondary MMUs
that share the same pagetable with the primary MMU (like AMD iommuv2)
can get away only implementing ->invalidate_range"
As the callback is allowed to sleep and the implementation is out of
hand of the MM it is safer to simply bail out if there is an mmu
notifier registered. In order to not fail too early make the
mm_has_notifiers check under the oom_lock and have a little nap before
failing to give the current oom victim some more time to exit.
[akpm@linux-foundation.org: coding-style fixes]
Link: http://lkml.kernel.org/r/20170913113427.2291-1-mhocko@kernel.org
Fixes: aac453635549 ("mm, oom: introduce oom reaper")
Signed-off-by: Michal Hocko <mhocko@suse.com>
Reported-by: Andrea Arcangeli <aarcange@redhat.com>
Reviewed-by: Andrea Arcangeli <aarcange@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
It is possible that on a (partially) unsuccessful page reclaim,
kref_put() called in z3fold_reclaim_page() does not yield page release,
but the page is released shortly afterwards by another thread. Then
z3fold_reclaim_page() would try to list_add() that (released) page again
which is obviously a bug.
To avoid that, spin_lock() has to be taken earlier, before the
kref_put() call mentioned earlier.
Link: http://lkml.kernel.org/r/20170913162937.bfff21c7d12b12a5f47639fd@gmail.com
Signed-off-by: Vitaly Wool <vitalywool@gmail.com>
Cc: Dan Streetman <ddstreet@ieee.org>
Cc: <Oleksiy.Avramchenko@sony.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
Pinmux_pins[] is initialized through PINMUX_GPIO(), using designated
array initializers, where the GPIO_* enums serve as indices. If enum
values are defined, but never used, pinmux_pins[] contains (zero-filled)
holes. Such entries are treated as pin zero, which was registered
before, thus leading to pinctrl registration failures, as seen on
sh7722:
sh-pfc pfc-sh7722: pin 0 already registered
sh-pfc pfc-sh7722: error during pin registration
sh-pfc pfc-sh7722: could not register: -22
sh-pfc: probe of pfc-sh7722 failed with error -22
Remove GPIO_PH[0-7] from the enum to fix this.
Link: http://lkml.kernel.org/r/1505205657-18012-5-git-send-email-geert+renesas@glider.be
Fixes: ef0fa5331a73e479 ("sh: Add pinmux for sh7269")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Rich Felker <dalias@libc.org>
Cc: Magnus Damm <magnus.damm@gmail.com>
Cc: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Cc: Jacopo Mondi <jacopo+renesas@jmondi.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
Pinmux_pins[] is initialized through PINMUX_GPIO(), using designated
array initializers, where the GPIO_* enums serve as indices. If enum
values are defined, but never used, pinmux_pins[] contains (zero-filled)
holes. Such entries are treated as pin zero, which was registered
before, thus leading to pinctrl registration failures, as seen on
sh7722:
sh-pfc pfc-sh7722: pin 0 already registered
sh-pfc pfc-sh7722: error during pin registration
sh-pfc pfc-sh7722: could not register: -22
sh-pfc: probe of pfc-sh7722 failed with error -22
Remove GPIO_PH[0-7] from the enum to fix this.
Link: http://lkml.kernel.org/r/1505205657-18012-4-git-send-email-geert+renesas@glider.be
Fixes: 41797f75486d8ca3 ("sh: Add pinmux for sh7264")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Jacopo Mondi <jacopo+renesas@jmondi.org>
Cc: Magnus Damm <magnus.damm@gmail.com>
Cc: Rich Felker <dalias@libc.org>
Cc: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
Commit 3810e96056ff ("sh: modify pinmux for SH7757 2nd cut") renamed
GPIO_PT[JLNQ]7 to GPIO_PT[JLNQ]7_RESV, and removed the existing users
from the pinmux_pins[] array.
However, pinmux_pins[] is initialized through PINMUX_GPIO(), using
designated array initializers, where the GPIO_* enums serve as indices.
Hence entries were not really removed, but replaced by (zero-filled)
holes. Such entries are treated as pin zero, which was registered
before, thus leading to pinctrl registration failures, as seen on
sh7722:
sh-pfc pfc-sh7722: pin 0 already registered
sh-pfc pfc-sh7722: error during pin registration
sh-pfc pfc-sh7722: could not register: -22
sh-pfc: probe of pfc-sh7722 failed with error -22
Remove GPIO_PT[JLNQ]7_RESV from the enum to fix this.
Link: http://lkml.kernel.org/r/1505205657-18012-3-git-send-email-geert+renesas@glider.be
Fixes: 3810e96056ffddf6 ("sh: modify pinmux for SH7757 2nd cut")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Jacopo Mondi <jacopo+renesas@jmondi.org>
Cc: Magnus Damm <magnus.damm@gmail.com>
Cc: Rich Felker <dalias@libc.org>
Cc: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
Patch series "sh: sh7722/sh7757i/sh7264/sh7269: Fix pinctrl registration",
v2.
Magnus Damm reported that on sh7722/Migo-R, pinctrl registration fails
with:
sh-pfc pfc-sh7722: pin 0 already registered
sh-pfc pfc-sh7722: error during pin registration
sh-pfc pfc-sh7722: could not register: -22
sh-pfc: probe of pfc-sh7722 failed with error -22
pinmux_pins[] is initialized through PINMUX_GPIO(), using designated
array initializers, where the GPIO_* enums serve as indices. Apparently
GPIO_PTQ7 was defined in the enum, but never used. If enum values are
defined, but never used, pinmux_pins[] contains (zero-filled) holes.
Hence such entries are treated as pin zero, which was registered before,
and pinctrl registration fails.
I can't see how this ever worked, as at the time of commit f5e25ae52fef
("sh-pfc: Add sh7722 pinmux support"), pinmux_gpios[] in
drivers/pinctrl/sh-pfc/pfc-sh7722.c already had the hole, and
drivers/pinctrl/core.c already had the check.
Some scripting revealed a few more broken drivers:
- sh7757 has four holes, due to nonexistent GPIO_PT[JLNQ]7_RESV.
- sh7264 and sh7269 define GPIO_PH[0-7], but don't use it with
PINMUX_GPIO().
Patch 1 fixes the issue on sh7722, and was tested. Patches 3-4 should
fix the issue on the other 3 SoCs, but was untested due to lack of
hardware.
This patch (of 4):
On sh7722/Migo-R, pinctrl registration fails with:
sh-pfc pfc-sh7722: pin 0 already registered
sh-pfc pfc-sh7722: error during pin registration
sh-pfc pfc-sh7722: could not register: -22
sh-pfc: probe of pfc-sh7722 failed with error -22
pinmux_pins[] is initialized through PINMUX_GPIO(), using designated array
initializers, where the GPIO_* enums serve as indices. As GPIO_PTQ7 is
defined in the enum, but never used, pinmux_pins[] contains a
(zero-filled) hole. Hence this entry is treated as pin zero, which was
registered before, and pinctrl registration fails.
According to the datasheet, port PTQ7 does not exist. Hence remove
GPIO_PTQ7 from the enum to fix this.
Link: http://lkml.kernel.org/r/1505205657-18012-2-git-send-email-geert+renesas@glider.be
Fixes: 8d7b5b0af7e070b9 ("sh: Add sh7722 pinmux code")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reported-by: Magnus Damm <magnus.damm@gmail.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Cc: Rich Felker <dalias@libc.org>
Cc: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
This fixes a bug in madvise() where if you'd try to soft offline a
hugepage via madvise(), while walking the address range you'd end up,
using the wrong page offset due to attempting to get the compound order
of a former but presently not compound page, due to dissolving the huge
page (since commit c3114a84f7f9: "mm: hugetlb: soft-offline: dissolve
source hugepage after successful migration").
As a result I ended up with all my free pages except one being offlined.
Link: http://lkml.kernel.org/r/20170912204306.GA12053@gmail.com
Fixes: c3114a84f7f9 ("mm: hugetlb: soft-offline: dissolve source hugepage after successful migration")
Signed-off-by: Alexandru Moise <00moses.alexander00@gmail.com>
Cc: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Hillf Danton <hdanton@sina.com>
Cc: Shaohua Li <shli@fb.com>
Cc: Mike Rapoport <rppt@linux.vnet.ibm.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: David Rientjes <rientjes@google.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
In this place mm is unlocked, so vmas or list may change. Down read
mmap_sem to protect them from modifications.
Link: http://lkml.kernel.org/r/150512788393.10691.8868381099691121308.stgit@localhost.localdomain
Fixes: e86c59b1b12d ("mm/ksm: improve deduplication of zero pages with colouring")
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Andrea Arcangeli <aarcange@redhat.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: zhong jiang <zhongjiang@huawei.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Claudio Imbrenda <imbrenda@linux.vnet.ibm.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
There's a typo in recent change of VM_MPX definition. We want it to be
VM_HIGH_ARCH_4, not VM_HIGH_ARCH_BIT_4.
This bug does cause visible regressions. In arch_vma_name the vmflags
are tested against VM_MPX. With the incorrect value of VM_MPX, a number
of vmas (such as the stack) test positive and end up being marked as
"[mpx]" in /proc/N/maps instead of their correct names.
This confuses tools like rr which expect to be able to find familiar
vmas.
Fixes: df3735c5b40f ("x86,mpx: make mpx depend on x86-64 to free up VMA flag")
Link: http://lkml.kernel.org/r/20170918140253.36856-1-kirill.shutemov@linux.intel.com
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reviewed-by: Rik van Riel <riel@redhat.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Kyle Huey <me@kylehuey.com>
Cc: <stable@vger.kernel.org> [4.14+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
Here are some of the more spelling mistakes and typos that I've found
while fixing up spelling mistakes in kernel error message text over the
past eight weeks.
[akpm@linux-foundation.org: s/|/||/, per Joe]
Link: http://lkml.kernel.org/r/20170919090818.5989-1-colin.king@canonical.com
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Kees Cook <keescook@chromium.org>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Joe Perches <joe@perches.com>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
This parameter is named kp, so the documentation should use that.
Fixes: 9b473de87209 ("param: Fix duplicate module prefixes")
Link: http://lkml.kernel.org/r/20170919142656.64aea59e@endymion
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
The build of alpha allmodconfig is giving error:
arch/alpha/include/asm/mmu_context.h: In function 'ev5_switch_mm':
arch/alpha/include/asm/mmu_context.h:160:2: error:
implicit declaration of function 'task_thread_info';
did you mean 'init_thread_info'? [-Werror=implicit-function-declaration]
The file 'mmu_context.h' needed an extra header file.
Link: http://lkml.kernel.org/r/1505668810-7497-1-git-send-email-sudipm.mukherjee@gmail.com
Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
- bpf prog_array just like all other types of bpf array accepts 32-bit index.
Clarify that in the comment.
- fix x64 JIT of bpf_tail_call which was incorrectly loading 8 instead of 4 bytes
- tighten corresponding check in the interpreter to stay consistent
The JIT bug can be triggered after introduction of BPF_F_NUMA_NODE flag
in commit 96eabe7a40aa in 4.14. Before that the map_flags would stay zero and
though JIT code is wrong it will check bounds correctly.
Hence two fixes tags. All other JITs don't have this problem.
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Fixes: 96eabe7a40aa ("bpf: Allow selecting numa node during map creation")
Fixes: b52f00e6a715 ("x86: bpf_jit: implement bpf_tail_call() helper")
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Add constants and callback functions for the dwmac on rk3128 soc.
As can be seen, the base structure is the same, only registers
and the bits in them moved slightly.
Signed-off-by: David Wu <david.wu@rock-chips.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
In blk_mq_debugfs_register(), I remembered to set up the per-hctx sched
directories if a default scheduler was already configured by
blk_mq_sched_init() from blk_mq_init_allocated_queue(), but I didn't do
the same for the device-wide sched directory. Fix it.
Fixes: d332ce091813 ("blk-mq-debugfs: allow schedulers to register debugfs attributes")
Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
|
|
A recent commit made null_blk depend on configfs, which is kind of
annoying since you now have to find this dependency and enable that
as well. Discovered this since I no longer had null_blk available
on a box I needed to debug, since it got killed when the config
updated after the configfs change was merged.
Fixes: 3bf2bd20734e ("nullb: add configfs interface")
Reviewed-by: Shaohua Li <shli@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
|
|
There is a case which will lead to io stall. The case is described as
follows.
/test1
|-subtest1
/test2
|-subtest2
And subtest1 and subtest2 each has 32 queued bios already.
Now upgrade to max. In throtl_upgrade_state, it will try to dispatch
bios as follows:
1) tg=subtest1, do nothing;
2) tg=test1, transfer 32 queued bios from subtest1 to test1; no pending
left, no need to schedule next dispatch;
3) tg=subtest2, do nothing;
4) tg=test2, transfer 32 queued bios from subtest2 to test2; no pending
left, no need to schedule next dispatch;
5) tg=/, transfer 8 queued bios from test1 to /, 8 queued bios from
test2 to /, 8 queued bios from test1 to /, and 8 queued bios from test2
to /; note that test1 and test2 each still has 16 queued bios left;
6) tg=/, try to schedule next dispatch, but since disptime is now
(update in tg_update_disptime, wait=0), pending timer is not scheduled
in fact;
7) In throtl_upgrade_state it totally dispatches 32 queued bios and with
32 left. test1 and test2 each has 16 queued bios;
8) throtl_pending_timer_fn sees the left over bios, but could do
nothing, because throtl_select_dispatch returns 0, and test1/test2 has
no pending tg.
The blktrace shows the following:
8,32 0 0 2.539007641 0 m N throtl upgrade to max
8,32 0 0 2.539072267 0 m N throtl /test2 dispatch nr_queued=16 read=0 write=16
8,32 7 0 2.539077142 0 m N throtl /test1 dispatch nr_queued=16 read=0 write=16
So force schedule dispatch if there are pending children.
Reviewed-by: Shaohua Li <shli@fb.com>
Signed-off-by: Joseph Qi <qijiang.qj@alibaba-inc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
|
|
Treat the ef/04/01 interface class/subclass/protocol combination used
by the Novatel Verizon USB730L (1410:9030) as a possible RNDIS
interface.
T: Bus=01 Lev=02 Prnt=02 Port=01 Cnt=02 Dev#= 17 Spd=480 MxCh= 0
D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 3
P: Vendor=1410 ProdID=9030 Rev=03.10
S: Manufacturer=Novatel Wireless
S: Product=MiFi USB730L
S: SerialNumber=0123456789ABCDEF
C: #Ifs= 3 Cfg#= 1 Atr=80 MxPwr=500mA
I: If#= 0 Alt= 0 #EPs= 1 Cls=ef(misc ) Sub=04 Prot=01 Driver=rndis_host
I: If#= 1 Alt= 0 #EPs= 2 Cls=0a(data ) Sub=00 Prot=00 Driver=rndis_host
I: If#= 2 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=00 Prot=00 Driver=usbhid
Once the network interface is brought up, the user just needs to run a
DHCP client to get IP address and routing setup.
As a side note, other Novatel Verizon USB730L models with the same
vid:pid end up exposing a standard ECM interface which doesn't require
any other kernel update to make it work.
Signed-off-by: Aleksander Morgado <aleksander@aleksander.es>
Reviewed-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
The common lane power down flag of a DPIO PHY has a funky semantic:
after the initial enabling of the PHY (so from a disabled state) this
flag will be clear. It will be set only after the PHY will be used for
the first time (for instance due to enabling the corresponding pipe) and
then become unused (due to disabling the pipe). During the initial PHY
enablement we don't know which of the above phases we are in, so move
the check for the flag where this is known, the HW readout code. This is
where the rest of lane power down status checks are done anyway.
This fixes at least a problem on GLK where after module reloading, the
common lane power down flag of PHY1 is set, but the PHY is actually
powered-on and properly set up. The GRC readout code for other PHYs will
hence think that PHY1 is not powered initially and disable it after the
GRC readout. This will cause the AUX power well related to PHY1 to get
disabled in a stuck state, timing out when we try to enable it later.
Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
Fixes: e93da0a0137b ("drm/i915/bxt: Sanitiy check the PHY lane power down status")
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=102777
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171002135307.26117-1-imre.deak@intel.com
(cherry picked from commit e19c1eb885ac4186e64c7e484424124f3145318e)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
|
|
We used to assign IRQs for all devices at boot-time, before any drivers
claimed devices. The following commits:
30fdfb929e82 ("PCI: Add a call to pci_assign_irq() in pci_device_probe()")
0e4c2eeb758a ("alpha/PCI: Replace pci_fixup_irqs() call with host bridge IRQ mapping hooks")
changed this so we now call pci_assign_irq() from pci_device_probe() when
we call a driver's probe method.
The ide_scan_pcibus() path (enabled by CONFIG_IDEPCI_PCIBUS_ORDER) bypasses
pci_device_probe() so it can guarantee devices are claimed in order of PCI
bus address. It calls the driver's probe method directly, so it misses the
pci_assign_irq() call (and other PCI initialization functions), which
causes failures like this:
ide0: disabled, no IRQ
ide0: failed to initialize IDE interface
ide0: disabling port
cmd64x 0000:00:02.0: IDE controller (0x1095:0x0646 rev 0x07)
CMD64x_IDE 0000:00:02.0: BAR 0: can't reserve [io 0x8050-0x8057]
cmd64x 0000:00:02.0: can't reserve resources
CMD64x_IDE: probe of 0000:00:02.0 failed with error -16
ide_generic: please use "probe_mask=0x3f" module parameter for probing
all legacy ISA IDE ports
------------[ cut here ]------------
WARNING: CPU: 0 PID: 1 at fs/sysfs/dir.c:31 sysfs_warn_dup+0x94/0xd0
sysfs: cannot create duplicate filename '/class/ide_port/ide0'
...
Trace:
[<fffffc000048c9f4>] sysfs_warn_dup+0x94/0xd0
[<fffffc0000330928>] warn_slowpath_fmt+0x58/0x70
[<fffffc000048c9f4>] sysfs_warn_dup+0x94/0xd0
[<fffffc0000486d40>] kernfs_path_from_node+0x30/0x60
[<fffffc00004874ac>] kernfs_put+0x16c/0x2c0
[<fffffc00004874ac>] kernfs_put+0x16c/0x2c0
[<fffffc000048d010>] sysfs_do_create_link_sd.isra.2+0x100/0x120
[<fffffc00005b9d64>] device_add+0x2a4/0x7c0
[<fffffc00005ba5cc>] device_create_groups_vargs+0x14c/0x170
[<fffffc00005ba518>] device_create_groups_vargs+0x98/0x170
[<fffffc00005ba690>] device_create+0x50/0x70
[<fffffc00005df36c>] ide_host_register+0x48c/0xa00
[<fffffc00005df330>] ide_host_register+0x450/0xa00
[<fffffc00005ba2a0>] device_register+0x20/0x50
[<fffffc00005df330>] ide_host_register+0x450/0xa00
[<fffffc00005df944>] ide_host_add+0x64/0xe0
[<fffffc000079b41c>] kobject_uevent_env+0x16c/0x710
[<fffffc0000310288>] do_one_initcall+0x68/0x260
[<fffffc00007b13bc>] kernel_init+0x1c/0x1a0
...
---[ end trace 24a70433c3e4d374 ]---
ide0: disabling port
Fix the IRQ allocation issue by calling pci_assign_irq() from
ide_scan_pcidev() before probing the IDE PCI drivers, so that IRQs for a
given PCI device are allocated for the IDE PCI drivers to use them for
device configuration.
Fixes: 30fdfb929e82 ("PCI: Add a call to pci_assign_irq() in pci_device_probe()")
Fixes: 0e4c2eeb758a ("alpha/PCI: Replace pci_fixup_irqs() call with host bridge IRQ mapping hooks")
Link: http://lkml.kernel.org/r/32ec730f-c1b0-5584-cd35-f8a809122b96@roeck-us.net
Reported-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
[bhelgaas: changelog]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Acked-by: David S. Miller <davem@davemloft.net>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
|
|
Recent pci_assign_irq() changes uncovered a problem with missing freeing of
PCI BARs on PCI IDE host initialization failure:
ide0: disabled, no IRQ
ide0: failed to initialize IDE interface
ide0: disabling port
cmd64x 0000:00:02.0: IDE controller (0x1095:0x0646 rev 0x07)
CMD64x_IDE 0000:00:02.0: BAR 0: can't reserve [io 0x8050-0x8057]
cmd64x 0000:00:02.0: can't reserve resources
CMD64x_IDE: probe of 0000:00:02.0 failed with error -16
Fix the problem by adding missing freeing of PCI BARs to
ide_setup_pci_controller() and ide_pci_init_two().
Fixes: 30fdfb929e82 ("PCI: Add a call to pci_assign_irq() in pci_device_probe()")
Fixes: 0e4c2eeb758a ("alpha/PCI: Replace pci_fixup_irqs() call with host bridge IRQ mapping hooks")
Link: http://lkml.kernel.org/r/32ec730f-c1b0-5584-cd35-f8a809122b96@roeck-us.net
Reported-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
[bhelgaas: add Fixes:]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
|
|
Recent pci_assign_irq() changes uncovered a problem with missing freeing of
ide_port class instance on hwif_init() failure in ide_host_register():
ide0: disabled, no IRQ
ide0: failed to initialize IDE interface
ide0: disabling port
cmd64x 0000:00:02.0: IDE controller (0x1095:0x0646 rev 0x07)
CMD64x_IDE 0000:00:02.0: BAR 0: can't reserve [io 0x8050-0x8057]
cmd64x 0000:00:02.0: can't reserve resources
CMD64x_IDE: probe of 0000:00:02.0 failed with error -16
ide_generic: please use "probe_mask=0x3f" module parameter for probing all legacy ISA IDE ports
------------[ cut here ]------------
WARNING: CPU: 0 PID: 1 at fs/sysfs/dir.c:31 sysfs_warn_dup+0x94/0xd0
sysfs: cannot create duplicate filename '/class/ide_port/ide0'
...
Trace:
[<fffffc00003308a0>] __warn+0x160/0x190
[<fffffc000048c9f4>] sysfs_warn_dup+0x94/0xd0
[<fffffc0000330928>] warn_slowpath_fmt+0x58/0x70
[<fffffc000048c9f4>] sysfs_warn_dup+0x94/0xd0
[<fffffc0000486d40>] kernfs_path_from_node+0x30/0x60
[<fffffc00004874ac>] kernfs_put+0x16c/0x2c0
[<fffffc00004874ac>] kernfs_put+0x16c/0x2c0
[<fffffc000048d010>] sysfs_do_create_link_sd.isra.2+0x100/0x120
[<fffffc00005b9d64>] device_add+0x2a4/0x7c0
[<fffffc00005ba5cc>] device_create_groups_vargs+0x14c/0x170
[<fffffc00005ba518>] device_create_groups_vargs+0x98/0x170
[<fffffc00005ba690>] device_create+0x50/0x70
[<fffffc00005df36c>] ide_host_register+0x48c/0xa00
[<fffffc00005df330>] ide_host_register+0x450/0xa00
[<fffffc00005ba2a0>] device_register+0x20/0x50
[<fffffc00005df330>] ide_host_register+0x450/0xa00
[<fffffc00005df944>] ide_host_add+0x64/0xe0
[<fffffc000079b41c>] kobject_uevent_env+0x16c/0x710
[<fffffc0000310288>] do_one_initcall+0x68/0x260
[<fffffc00007b13bc>] kernel_init+0x1c/0x1a0
[<fffffc00007b13a0>] kernel_init+0x0/0x1a0
[<fffffc0000311868>] ret_from_kernel_thread+0x18/0x20
[<fffffc00007b13a0>] kernel_init+0x0/0x1a0
---[ end trace 24a70433c3e4d374 ]---
ide0: disabling port
Fix the problem by adding missing code to ide_host_register().
Fixes: 30fdfb929e82 ("PCI: Add a call to pci_assign_irq() in pci_device_probe()")
Fixes: 0e4c2eeb758a ("alpha/PCI: Replace pci_fixup_irqs() call with host bridge IRQ mapping hooks")
Link: http://lkml.kernel.org/r/32ec730f-c1b0-5584-cd35-f8a809122b96@roeck-us.net
Reported-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
[bhelgaas: add Fixes:]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
|
|
nbd-general@sourceforge.net becomes nbd@other.debian.org, because
sourceforge is just a spamtrap these days.
Signed-off-by: Wouter Verhelst <w@uter.be>
Reviewed-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq
Pull workqueue fixlet from Tejun Heo:
"Minor documentation update"
* 'for-4.14-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
Documentation: core-api: minor workqueue.rst cleanups
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
Pull cgroup fix from Tejun Heo:
"The recent migration code updates assumed that migrations always
execute from the top to the bottom once and didn't clean up internal
states after each migration round; however, cgroup_transfer_tasks()
repeats the inner steps multiple times and the garbage internal states
from the previous iteration led to OOPS.
Waiman fixed the bug by reinitializing the relevant states at the end
of each migration round"
* 'for-4.14-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
cgroup: Reinit cgroup_taskset structure before cgroup_migrate_execute() returns
|
|
When RTM_GETSTATS was added the fields of its header struct were not all
initialized when returning the result thus leaking 4 bytes of information
to user-space per rtnl_fill_statsinfo call, so initialize them now. Thanks
to Alexander Potapenko for the detailed report and bisection.
Reported-by: Alexander Potapenko <glider@google.com>
Fixes: 10c9ead9f3c6 ("rtnetlink: add new RTM_GETSTATS message to dump link stats")
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Acked-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
Pull percpu fixes from Tejun Heo:
"Rather important fixes this time.
- The new percpu area allocator had a subtle bug in how it iterates
the memory regions and could skip viable areas, which led to
allocation failures for module static percpu variables. Dennis
fixed the bug and another non-critical one in stat calculation.
- Mark noticed that the generic implementations of percpu local
atomic reads aren't properly protected against irqs and there's a
(slim) chance for split reads on some 32bit systems. Generic
implementations are updated to disable irq when read size is larger
than ulong size. This may have made some 32bit archs which can do
atomic local 64bit accesses generate sub-optimal code. We need to
find them out and implement arch-specific overrides"
* 'for-4.14-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu:
percpu: fix iteration to prevent skipping over block
percpu: fix starting offset for chunk statistics traversal
percpu: make this_cpu_generic_read() atomic w.r.t. interrupts
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata
Pull libata fixes from Tejun Heo:
"Nothing too interesting.
Arnd's gcc-7 warning fixes that slipped through the cracks for two
release cycles (my bad), and two minor low level driver updates"
* 'for-4.14-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata:
ahci: don't ignore result code of ahci_reset_controller()
ata_piix: Add Fujitsu-Siemens Lifebook S6120 to short cable IDs
ata: avoid gcc-7 warning in ata_timing_quantize
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here are a number of USB fixes for 4.14-rc4 to resolved reported
issues.
There's a bunch of stuff in here based on the great work Andrey
Konovalov is doing in fuzzing the USB stack. Lots of bug fixes when
dealing with corrupted USB descriptors that we've never seen in
"normal" operation, but is now ensuring the stack is much more
hardened overall.
There's also the usual XHCI and gadget driver fixes as well, and a
build error fix, and a few other minor things, full details in the
shortlog.
All of these have been in linux-next with no reported issues"
* tag 'usb-4.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (38 commits)
usb: dwc3: of-simple: Add compatible for Spreadtrum SC9860 platform
usb: gadget: udc: atmel: set vbus irqflags explicitly
usb: gadget: ffs: handle I/O completion in-order
usb: renesas_usbhs: fix usbhsf_fifo_clear() for RX direction
usb: renesas_usbhs: fix the BCLR setting condition for non-DCP pipe
usb: gadget: udc: renesas_usb3: Fix return value of usb3_write_pipe()
usb: gadget: udc: renesas_usb3: fix Pn_RAMMAP.Pn_MPKT value
usb: gadget: udc: renesas_usb3: fix for no-data control transfer
USB: dummy-hcd: Fix erroneous synchronization change
USB: dummy-hcd: fix infinite-loop resubmission bug
USB: dummy-hcd: fix connection failures (wrong speed)
USB: cdc-wdm: ignore -EPIPE from GetEncapsulatedResponse
USB: devio: Don't corrupt user memory
USB: devio: Prevent integer overflow in proc_do_submiturb()
USB: g_mass_storage: Fix deadlock when driver is unbound
USB: gadgetfs: Fix crash caused by inadequate synchronization
USB: gadgetfs: fix copy_to_user while holding spinlock
USB: uas: fix bug in handling of alternate settings
usb-storage: unusual_devs entry to fix write-access regression for Seagate external drives
usb-storage: fix bogus hardware error messages for ATA pass-thru devices
...
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial fixes from Greg KH:
"Here are a small number (5) of patches for some reported TTY and
serial issues. Nothing major, a documentation update, timing fix,
error handling fix, name reporting fix, and a timeout issue resolved.
All of these have been in linux-next for a while with no reported
issues"
* tag 'tty-4.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
serial: sccnxp: Fix error handling in sccnxp_probe()
tty: serial: lpuart: avoid report NULL interrupt
serial: bcm63xx: fix timing issue.
mxser: fix timeout calculation for low rates
serial: sh-sci: document R8A77970 bindings
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging/IIO fixes from Greg KH:
"Here are some small staging/IIO driver fixes for 4.14-rc4
Most of these have been in my tree for a while due to travels, sorry
for the delay. They resolve a number of small issues reported by
people, mostly for the iio drivers. Nothing major in here, full
details are in the shortlog.
All have been linux-next for a few weeks with no reported issues"
* tag 'staging-4.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (23 commits)
staging: iio: ad7192: Fix - use the dedicated reset function avoiding dma from stack.
iio: core: Return error for failed read_reg
iio: ad7793: Fix the serial interface reset
iio: ad_sigma_delta: Implement a dedicated reset function
IIO: BME280: Updates to Humidity readings need ctrl_reg write!
iio: adc: mcp320x: Fix readout of negative voltages
iio: adc: mcp320x: Fix oops on module unload
iio: adc: stm32: fix bad error check on max_channels
iio: trigger: stm32-timer: fix a corner case to write preset
iio: trigger: stm32-timer: preset shouldn't be buffered
iio: adc: twl4030: Return an error if we can not enable the vusb3v1 regulator in 'twl4030_madc_probe()'
iio: adc: twl4030: Disable the vusb3v1 rugulator in the error handling path of 'twl4030_madc_probe()'
iio: adc: twl4030: Fix an error handling path in 'twl4030_madc_probe()'
staging: rtl8723bs: avoid null pointer dereference on pmlmepriv
staging: rtl8723bs: add missing range check on id
staging: vchiq_2835_arm: Fix NULL ptr dereference in free_pagelist
staging: speakup: fix speakup-r empty line lockup
staging: pi433: Move limit check to switch default to kill warning
staging: r8822be: fix null pointer dereferences with a null driver_adapter
staging: mt29f_spinand: Enable the read ECC before program the page
...
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In KVM's XICS-on-XIVE emulation, kvmppc_xive_get_xive() returns the
value of state->guest_server as "server". However, this value is not
set by it's counterpart kvmppc_xive_set_xive(). When the guest uses
this interface to migrate interrupts away from a CPU that is going
offline, it sees all interrupts as belonging to CPU 0, so they are
left assigned to (now) offline CPUs.
This patch removes the guest_server field from the state, and returns
act_server in it's place (that is, the CPU actually handling the
interrupt, which may differ from the one requested).
Fixes: 5af50993850a ("KVM: PPC: Book3S HV: Native usage of the XIVE interrupt controller")
Cc: stable@vger.kernel.org
Signed-off-by: Sam Bobroff <sam.bobroff@au1.ibm.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core fixes from Greg KH:
"Here are a few small fixes for 4.14-rc4.
The removal of DRIVER_ATTR() was almost completed by 4.14-rc1, but one
straggler made it in through some other tree (odds are, one of
mine...) So there's a simple removal of the last user, and then
finally the macro is removed from the tree.
There's a fix for old crazy udev instances that insist on reloading a
module when it is removed from the kernel due to the new uevents for
bind/unbind. This fixes the reported regression, hopefully some year
in the future we can drop the workaround, once users update to the
latest version, but I'm not holding my breath.
And then there's a build fix for a linker warning, and a buffer
overflow fix to match the PCI fixes you took through the PCI tree in
the same area.
All of these have been in linux-next for a few weeks while I've been
traveling, sorry for the delay"
* tag 'driver-core-4.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
driver core: remove DRIVER_ATTR
fpga: altera-cvp: remove DRIVER_ATTR() usage
driver core: platform: Don't read past the end of "driver_override" buffer
base: arch_topology: fix section mismatch build warnings
driver core: suppress sending MODALIAS in UNBIND uevents
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc fixes from Greg KH:
"Here are a handful of char/misc driver fixes for 4.14-rc4.
Nothing major, some binder fixups, hyperv fixes, and other tiny
things.
All of these have been sitting in my tree for way too long, sorry for
the delay in getting them to you. All have been in linux-next for a
few weeks, and despite some people's feeling about if linux-next
actually tests things, I think it's a good "soak test" for patches"
* tag 'char-misc-4.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
Drivers: hv: fcopy: restore correct transfer length
vmbus: don't acquire the mutex in vmbus_hvsock_device_unregister()
intel_th: pci: Add Lewisburg PCH support
intel_th: pci: Add Cedar Fork PCH support
stm class: Fix a use-after-free
nvmem: add missing of_node_put() in of_nvmem_cell_get()
nvmem: core: return EFBIG on out-of-range write
auxdisplay: charlcd: properly restore atomic counter on error path
binder: fix memory corruption in binder_transaction binder
binder: fix an ret value override
android: binder: fix type mismatch warning
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The read of ->dynticks_nmi_nesting in rcu_irq_enter() and rcu_irq_exit()
is currently protected with READ_ONCE(). However, this protection is
unnecessary because (1) ->dynticks_nmi_nesting is updated only by the
current CPU, (2) Although NMI handlers can update this field, they reset
it back to its old value before return, and (3) Interrupts are disabled,
so nothing else can modify it. The value of ->dynticks_nmi_nesting is
thus effectively constant, and so no protection is required.
This commit therefore removes the READ_ONCE() protection from these
two accesses.
Link: http://lkml.kernel.org/r/20170926031902.GA2074@linux.vnet.ibm.com
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
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The trampoline allocated by function tracer was overwriten by function_graph
tracer, and caused a memory leak. The save_global_trampoline should have
saved the previous trampoline in register_ftrace_graph() and restored it in
unregister_ftrace_graph(). But as it is implemented, save_global_trampoline was
only used in unregister_ftrace_graph as default value 0, and it overwrote the
previous trampoline's value. Causing the previous allocated trampoline to be
lost.
kmmeleak backtrace:
kmemleak_vmalloc+0x77/0xc0
__vmalloc_node_range+0x1b5/0x2c0
module_alloc+0x7c/0xd0
arch_ftrace_update_trampoline+0xb5/0x290
ftrace_startup+0x78/0x210
register_ftrace_function+0x8b/0xd0
function_trace_init+0x4f/0x80
tracing_set_tracer+0xe6/0x170
tracing_set_trace_write+0x90/0xd0
__vfs_write+0x37/0x170
vfs_write+0xb2/0x1b0
SyS_write+0x55/0xc0
do_syscall_64+0x67/0x180
return_from_SYSCALL_64+0x0/0x6a
[
Looking further into this, I found that this was left over from when the
function and function graph tracers shared the same ftrace_ops. But in
commit 5f151b2401 ("ftrace: Fix function_profiler and function tracer
together"), the two were separated, and the save_global_trampoline no
longer was necessary (and it may have been broken back then too).
-- Steven Rostedt
]
Link: http://lkml.kernel.org/r/20170912021454.5976-1-shuwang@redhat.com
Cc: stable@vger.kernel.org
Fixes: 5f151b2401 ("ftrace: Fix function_profiler and function tracer together")
Signed-off-by: Shu Wang <shuwang@redhat.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
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The mmu context on the 40x, 44x does not define pte_frag entry. This
causes gcc abort the compilation due to:
setup-common.c: In function ‘setup_arch’:
setup-common.c:908: error: ‘mm_context_t’ has no ‘pte_frag’
This patch fixes the issue by removing the pte_frag initialization in
setup-common.c.
This is possible, because the compiler will do the initialization,
since the mm_context is a sub struct of init_mm. init_mm is declared
in mm_types.h as external linkage.
According to C99 6.2.4.3:
An object whose identifier is declared with external linkage
[...] has static storage duration.
C99 defines in 6.7.8.10 that:
If an object that has static storage duration is not
initialized explicitly, then:
- if it has pointer type, it is initialized to a null pointer
Fixes: b1923caa6e64 ("powerpc: Merge 32-bit and 64-bit setup_arch()")
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Reviewed-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Commit 41d0c2ecde19 ("powerpc/powernv: Fix local TLB flush for boot
and MCE on POWER9") introduced calls to __flush_tlb_power[89] from the
cpufeatures code, specifying the number of sets to flush.
However, these functions take an action argument, not a number of
sets. This means we hit the BUG() in __flush_tlb_{206,300} when using
cpufeatures-style configuration.
This change passes TLB_INVAL_SCOPE_GLOBAL instead.
Fixes: 41d0c2ecde19 ("powerpc/powernv: Fix local TLB flush for boot and MCE on POWER9")
Cc: stable@vger.kernel.org # v4.13+
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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For write_pending if the queue is down or client failed then return -EIO
so that LIO can properly process the completed command. Prior we
returned 0 since LIO could not handle it properly. Now with commit
fa7e25cf13a6 ("target: Fix unknown fabric callback queue-full errors")
that patch addresses LIO's ability to handle things right.
Signed-off-by: Bryant G. Ly <bgly@us.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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iscsi_session_teardown was the only user of this function. Function
currently is just short for iscsi_remove_session + iscsi_free_session.
Signed-off-by: Khazhismel Kumykov <khazhy@google.com>
Acked-by: Chris Leech <cleech@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Session attributes exposed through sysfs were freed before the device
was destroyed, resulting in a potential use-after-free. Free these
attributes after removing the device.
Signed-off-by: Khazhismel Kumykov <khazhy@google.com>
Acked-by: Chris Leech <cleech@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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A user may lower the max_sectors_kb setting in sysfs to accommodate
certain workloads. Previously we would always set the max I/O size to
either the block layer default or the optional preferred I/O size
reported by the device.
Keep the current heuristics for the initial setting of max_sectors_kb.
For subsequent invocations, only update the current queue limit if it
exceeds the capabilities of the hardware.
Cc: <stable@vger.kernel.org>
Reported-by: Don Brace <don.brace@microsemi.com>
Reviewed-by: Martin Wilck <mwilck@suse.com>
Tested-by: Don Brace <don.brace@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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SBC-4 states:
"A MAXIMUM UNMAP LBA COUNT field set to a non-zero value indicates the
maximum number of LBAs that may be unmapped by an UNMAP command"
"A MAXIMUM WRITE SAME LENGTH field set to a non-zero value indicates
the maximum number of contiguous logical blocks that the device server
allows to be unmapped or written in a single WRITE SAME command."
Despite the spec being clear on the topic, some devices incorrectly
expect WRITE SAME commands with the UNMAP bit set to be limited to the
value reported in MAXIMUM UNMAP LBA COUNT in the Block Limits VPD.
Implement a blacklist option that can be used to accommodate devices
with this behavior.
Cc: <stable@vger.kernel.org>
Reported-by: Bill Kuzeja <William.Kuzeja@stratus.com>
Reported-by: Ewan D. Milne <emilne@redhat.com>
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Tested-by: Laurence Oberman <loberman@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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git://anongit.freedesktop.org/git/drm-intel into drm-fixes
drm/i915 fixes for 4.14-rc3
Couple fixes for stable:
- Fix ELD connector types and consequently audio on DP (Jani).
- Ignore HDMI on Port A and consequently fix an ops on i915 probe
when VBT advertises HDMI on Port A (Jani).
And a small fix:
- That removes a reduntant hw_check on modeset. (Colin)
* tag 'drm-intel-fixes-2017-09-27' of git://anongit.freedesktop.org/git/drm-intel:
drm/i915/bios: ignore HDMI on port A
drm/i915: remove redundant variable hw_check
drm/i915: always update ELD connector type after get modes
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Starting from linux-4.4, 3WHS no longer takes the listener lock.
Since this time, we might hit a use-after-free in sk_filter_charge(),
if the filter we got in the memcpy() of the listener content
just happened to be replaced by a thread changing listener BPF filter.
To fix this, we need to make sure the filter refcount is not already
zero before incrementing it again.
Fixes: e994b2f0fb92 ("tcp: do not lock listener to process SYN packets")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Christoph made it so that if we return'ed BLK_STS_RESOURCE whenever we
got ERESTARTSYS from sending our packets we'd return BLK_STS_OK, which
means we'd never requeue and just hang. We really need to return the
right value from the upper layer.
Fixes: fc17b6534eb8 ("blk-mq: switch ->queue_rq return value to blk_status_t")
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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The HDMI driver enables the bus and mod clocks in the bind function, but
does not disable them if it then bails our due to any errors. Neither
does it disable the clocks in the unbind function.
Fix this by adding a proper error path to the bind function, and
clk_disable_unprepare calls to the unbind function.
Also rename the err_cleanup_connector label to err_cleanup_encoder,
since it is the encoder that gets cleaned up.
Fixes: 9c5681011a0c ("drm/sun4i: Add HDMI support")
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170929082306.16193-6-wens@csie.org
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ahci_pci_reset_controller() calls ahci_reset_controller(), which may
fail, but ignores the result code and always returns success. This
may result in failures like below
ahci 0000:02:00.0: version 3.0
ahci 0000:02:00.0: enabling device (0000 -> 0003)
ahci 0000:02:00.0: SSS flag set, parallel bus scan disabled
ahci 0000:02:00.0: controller reset failed (0xffffffff)
ahci 0000:02:00.0: failed to stop engine (-5)
... repeated many times ...
ahci 0000:02:00.0: failed to stop engine (-5)
Unable to handle kernel paging request at virtual address ffff0000093f9018
...
PC is at ahci_stop_engine+0x5c/0xd8 [libahci]
LR is at ahci_deinit_port.constprop.12+0x1c/0xc0 [libahci]
...
[<ffff000000a17014>] ahci_stop_engine+0x5c/0xd8 [libahci]
[<ffff000000a196b4>] ahci_deinit_port.constprop.12+0x1c/0xc0 [libahci]
[<ffff000000a197d8>] ahci_init_controller+0x80/0x168 [libahci]
[<ffff000000a260f8>] ahci_pci_init_controller+0x60/0x68 [ahci]
[<ffff000000a26f94>] ahci_init_one+0x75c/0xd88 [ahci]
[<ffff000008430324>] local_pci_probe+0x3c/0xb8
[<ffff000008431728>] pci_device_probe+0x138/0x170
[<ffff000008585e54>] driver_probe_device+0x2dc/0x458
[<ffff0000085860e4>] __driver_attach+0x114/0x118
[<ffff000008583ca8>] bus_for_each_dev+0x60/0xa0
[<ffff000008585638>] driver_attach+0x20/0x28
[<ffff0000085850b0>] bus_add_driver+0x1f0/0x2a8
[<ffff000008586ae0>] driver_register+0x60/0xf8
[<ffff00000842f9b4>] __pci_register_driver+0x3c/0x48
[<ffff000000a3001c>] ahci_pci_driver_init+0x1c/0x1000 [ahci]
[<ffff000008083918>] do_one_initcall+0x38/0x120
where an obvious hardware level failure results in an unnecessary 15 second
delay and a subsequent crash.
So record the result code of ahci_reset_controller() and relay it, rather
than ignoring it.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Jiri Pirko says:
====================
mlxsw: Fixes in GRE offloading
Petr says:
This patchset fixes a couple unrelated problems in offloading IP-in-IP tunnels
in mlxsw driver.
- The first patch fixes a potential reference-counting problem that might lead
to a kernel crash.
- The second patch associates IPIP next hops with their loopback RIFs. Besides
being the right thing to do, it also fixes a problem where offloaded IPv6
routes that forward to IP-in-IP netdevices were not flagged as such.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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When considering whether to set RTNH_F_OFFLOAD flag on an IPv6 route,
mlxsw_sp_fib6_entry_offload_set() looks up the mlxsw_sp_nexthop
corresponding to a given route, and decides based on whether the next
hop's offloaded flag was set. When looking for the matching next hop, it
also takes into account the device of the route, which must match next
hop's RIF.
IPIP next hops however hitherto didn't set the RIF. As a result, IPv6
routes forwarding traffic to IP-in-IP netdevices are never marked as
offloaded, even when they actually are.
Thus track RIF of IPIP next hops the same way as that of ETHERNET next
hops.
Fixes: 8f28a3097645 ("mlxsw: spectrum_router: Support IPv6 overlay encap")
Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When creating a new RIF, bumping RIF count of the containing VR is the
last thing to be done. Symmetrically, when destroying a RIF, RIF count
is first dropped and only then the rest of the cleanup proceeds.
That's a problem for loopback RIFs. Those hold two VR references: one
for overlay and one for underlay. mlxsw_sp_rif_destroy() releases the
overlay one, and the deconfigure() callback the underlay one. But if
both overlay and underlay are the same, and if there are no other
artifacts holding the VR alive, this put actually destroys the VR. Later
on, when mlxsw_sp_rif_destroy() calls mlxsw_sp_vr_put() for the same VR,
the VR will already have been released and the kernel crashes with NULL
pointer dereference.
The underlying problem is that the RIF under destruction ends up
referencing the overlay VR much longer than it claims: all the way until
the call to mlxsw_sp_vr_put(). So line up the reference counting
properly to reflect this. Make corresponding changes in
mlxsw_sp_rif_create() as well for symmetry.
Fixes: 6ddb7426a7d4 ("mlxsw: spectrum_router: Introduce loopback RIFs")
Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The usx2y driver allocates the stream read/write buffers in continuous
pages depending on the stream setup, and this may spew the kernel
warning messages with a stack trace like:
WARNING: CPU: 1 PID: 1846 at mm/page_alloc.c:3883
__alloc_pages_slowpath+0x1ef2/0x2d70
Modules linked in:
CPU: 1 PID: 1846 Comm: kworker/1:2 Not tainted
....
It may confuse user as if it were any serious error, although this is
no fatal error and the driver handles the error case gracefully.
Since the driver has already some sanity check of the given size (128
and 256 pages), it can't pass any crazy value. So it's merely page
fragmentation.
This patch adds __GFP_NOWARN to each caller for suppressing such
kernel warnings. The original issue was spotted by syzkaller.
Reported-by: Andrey Konovalov <andreyknvl@google.com>
Tested-by: Andrey Konovalov <andreyknvl@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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previous commit 5d37ca14 "ceph: send LSSNAP request to auth mds
of directory inode" is buggy. It makes __choose_mds() choose mds
base on hash of '.snap' dentry.
Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
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