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| author | Aaron Tomlin <atomlin@redhat.com> | 2022-07-14 16:39:33 +0100 |
|---|---|---|
| committer | Luis Chamberlain <mcgrof@kernel.org> | 2022-07-14 17:40:23 -0700 |
| commit | 6f1dae1d84b6d08541d8e12edd1c8677ab279dea (patch) | |
| tree | 3c7776d7aad9d38ce88924822f8fa2d0a1d517a3 /kernel/module | |
| parent | dbf0ae65bce48bf4c2b6d114cac10193ef050294 (diff) | |
| download | linux-6f1dae1d84b6d08541d8e12edd1c8677ab279dea.tar.gz | |
module: Show the last unloaded module's taint flag(s)
For diagnostic purposes, this patch, in addition to keeping a record/or
track of the last known unloaded module, we now will include the
module's taint flag(s) too e.g: " [last unloaded: fpga_mgr_mod(OE)]"
Signed-off-by: Aaron Tomlin <atomlin@redhat.com>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
Diffstat (limited to 'kernel/module')
| -rw-r--r-- | kernel/module/main.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/kernel/module/main.c b/kernel/module/main.c index a776fdaf021dd4..e696f56243779c 100644 --- a/kernel/module/main.c +++ b/kernel/module/main.c @@ -524,7 +524,10 @@ static struct module_attribute modinfo_##field = { \ MODINFO_ATTR(version); MODINFO_ATTR(srcversion); -static char last_unloaded_module[MODULE_NAME_LEN+1]; +static struct { + char name[MODULE_NAME_LEN + 1]; + char taints[MODULE_FLAGS_BUF_SIZE]; +} last_unloaded_module; #ifdef CONFIG_MODULE_UNLOAD @@ -694,6 +697,7 @@ SYSCALL_DEFINE2(delete_module, const char __user *, name_user, { struct module *mod; char name[MODULE_NAME_LEN]; + char buf[MODULE_FLAGS_BUF_SIZE]; int ret, forced = 0; if (!capable(CAP_SYS_MODULE) || modules_disabled) @@ -753,8 +757,9 @@ SYSCALL_DEFINE2(delete_module, const char __user *, name_user, async_synchronize_full(); - /* Store the name of the last unloaded module for diagnostic purposes */ - strscpy(last_unloaded_module, mod->name, sizeof(last_unloaded_module)); + /* Store the name and taints of the last unloaded module for diagnostic purposes */ + strscpy(last_unloaded_module.name, mod->name, sizeof(last_unloaded_module.name)); + strscpy(last_unloaded_module.taints, module_flags(mod, buf, false), sizeof(last_unloaded_module.taints)); free_module(mod); /* someone could wait for the module in add_unformed_module() */ @@ -3137,7 +3142,8 @@ void print_modules(void) print_unloaded_tainted_modules(); preempt_enable(); - if (last_unloaded_module[0]) - pr_cont(" [last unloaded: %s]", last_unloaded_module); + if (last_unloaded_module.name[0]) + pr_cont(" [last unloaded: %s%s]", last_unloaded_module.name, + last_unloaded_module.taints); pr_cont("\n"); } |