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| author | Michal Hocko <mhocko@suse.com> | 2016-06-03 23:55:55 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-06-04 01:02:56 +0200 |
| commit | cbdcf7f78900625de35173961b9b95cde22bce45 (patch) | |
| tree | 313e8398a476f95583156893e8459c3f3592201a /mm/page_poison.c | |
| parent | mm, page_alloc: prevent infinite loop in buffered_rmqueue() (diff) | |
| download | linux-cbdcf7f78900625de35173961b9b95cde22bce45.tar.xz linux-cbdcf7f78900625de35173961b9b95cde22bce45.zip | |
mm, oom_reaper: do not use siglock in try_oom_reaper()
Oleg has noted that siglock usage in try_oom_reaper is both pointless
and dangerous. signal_group_exit can be checked lockless. The problem
is that sighand becomes NULL in __exit_signal so we can crash.
Fixes: 3ef22dfff239 ("oom, oom_reaper: try to reap tasks which skip regular OOM killer path")
Link: http://lkml.kernel.org/r/1464679423-30218-1-git-send-email-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Suggested-by: Oleg Nesterov <oleg@redhat.com>
Cc: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/page_poison.c')
0 files changed, 0 insertions, 0 deletions