diff options
| author | Rusty Russell <rusty@rustcorp.com.au> | 2010-08-05 12:59:08 -0600 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2010-08-05 12:59:08 +0930 |
| commit | 511ca6ae43fbe0a7c9e0b50ad275f7ef24ef3b58 (patch) | |
| tree | 596d11de1a99dfce758465de009a97ccdb7da011 /kernel/printk.c | |
| parent | eded41c1c6466081e0eb00d38719c6e6ee81a5d4 (diff) | |
module: fix crash in get_ksymbol() when oopsing in module init
Andrew had the sole pleasure of tickling this bug in linux-next; when we set
up "info->strtab" it's pointing into the temporary copy of the module. For
most uses that is fine, but kallsyms keeps a pointer around during module
load (inside mod->strtab).
If we oops for some reason inside a module's init function, kallsyms will use
the mod->strtab pointer into the now-freed temporary module copy.
(Later oopses work fine: after init we overwrite mod->strtab to point to a
compacted core-only strtab).
Reported-by: Andrew "Grumpy" Morton <akpm@linux-foundation.org>
Signed-off-by: Rusty "Buggy" Russell <rusty@rustcorp.com.au>
Tested-by: Andrew "Happy" Morton <akpm@linux-foundation.org>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'kernel/printk.c')
0 files changed, 0 insertions, 0 deletions