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mm: oom: do not reap task if there are live threads in threadgroup 

If the current process is exiting, we don't invoke oom killer, instead
we give it access to memory reserves and try to reap its mm in case
nobody is going to use it.  There's a mistake in the code performing
this check - we just ignore any process of the same thread group no
matter if it is exiting or not - see try_oom_reaper.  Fix it.

Link: http://lkml.kernel.org/r/1464087628-7318-1-git-send-email-vdavydov@virtuozzo.com
Fixes: 3ef22dfff2 ("oom, oom_reaper: try to reap tasks which skip regular OOM killer path")Signed-off-by: Vladimir Davydov <vdavydov@virtuozzo.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
hifive-unleashed-5.1
Vladimir Davydov 2016-05-27 14:27:21 -07:00 committed by Linus Torvalds
parent 9ecd10b7a0
commit edd9f7230f
1 changed files with 0 additions and 2 deletions
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mm/oom_kill.c
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@ -611,8 +611,6 @@ void try_oom_reaper(struct task_struct *tsk)
if (!process_shares_mm(p, mm))
continue;
if (same_thread_group(p, tsk))
continue;
if (fatal_signal_pending(p))
continue;