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| author | Paul Gortmaker <paul.gortmaker@windriver.com> | 2011-01-30 16:54:27 -0500 |
|---|---|---|
| committer | Paul Gortmaker <paul.gortmaker@windriver.com> | 2011-01-30 16:54:27 -0500 |
| commit | d168e78a297bca2e117ee0a51f865998feb5265a (patch) | |
| tree | 019d609feeeaafa94a82acfa1975696226959ada | |
| parent | bf85b57a602cf3d75c5311c04b0999f279532228 (diff) | |
| download | rt-patches-d168e78a297bca2e117ee0a51f865998feb5265a.tar.gz | |
rm capabilities-Use-rcu-to-protect-task-lookup-in-sys_c.patchv2.6.33-4157-g832d30c
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
| -rw-r--r-- | capabilities-Use-rcu-to-protect-task-lookup-in-sys_c.patch | 44 | ||||
| -rw-r--r-- | series | 1 |
2 files changed, 0 insertions, 45 deletions
diff --git a/capabilities-Use-rcu-to-protect-task-lookup-in-sys_c.patch b/capabilities-Use-rcu-to-protect-task-lookup-in-sys_c.patch deleted file mode 100644 index e223b7a..0000000 --- a/capabilities-Use-rcu-to-protect-task-lookup-in-sys_c.patch +++ /dev/null @@ -1,44 +0,0 @@ -From 59b446882dbd906785be95cfcc8d8caef1dba08c Mon Sep 17 00:00:00 2001 -From: Thomas Gleixner <tglx@linutronix.de> -Date: Wed, 9 Dec 2009 16:48:13 +0100 -Subject: [PATCH] capabilities: Use rcu to protect task lookup in sys_capget - -commit 59b446882dbd906785be95cfcc8d8caef1dba08c in tip. - -cap_get_target_pid() protects the task lookup with tasklist_lock. -security_capget() is called under tasklist_lock as well but -tasklist_lock does not protect anything there. The capabilities are -protected by RCU already. - -So tasklist_lock only protects the lookup and prevents the task going -away, which can be done with rcu_read_lock() as well. - -Signed-off-by: Thomas Gleixner <tglx@linutronix.de> -Cc: James Morris <jmorris@namei.org> -Cc: linux-security-module@vger.kernel.org - -diff --git a/kernel/capability.c b/kernel/capability.c -index 7f876e6..9e4697e 100644 ---- a/kernel/capability.c -+++ b/kernel/capability.c -@@ -135,7 +135,7 @@ static inline int cap_get_target_pid(pid_t pid, kernel_cap_t *pEp, - if (pid && (pid != task_pid_vnr(current))) { - struct task_struct *target; - -- read_lock(&tasklist_lock); -+ rcu_read_lock(); - - target = find_task_by_vpid(pid); - if (!target) -@@ -143,7 +143,7 @@ static inline int cap_get_target_pid(pid_t pid, kernel_cap_t *pEp, - else - ret = security_capget(target, pEp, pIp, pPp); - -- read_unlock(&tasklist_lock); -+ rcu_read_unlock(); - } else - ret = security_capget(current, pEp, pIp, pPp); - --- -1.7.1.1 - @@ -341,7 +341,6 @@ trace-bundle-uprev-parts-from-merges.patch # audit-Do-not-send-uninitialized-data-for-AUDIT_TTY_G.patch audit-Use-rcu-for-task-lookup-protection.patch -capabilities-Use-rcu-to-protect-task-lookup-in-sys_c.patch fs-Add-missing-rcu-protection-for-__task_cred-in-sys.patch security-Fix-invalid-rcu-assumptions-in-comments.patch oom-Add-missing-rcu-protection-of-__task_cred-in-dum.patch |