From: Vladimir Davydov <vdavydov@xxxxxxxxxxxxx> Subject: 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@xxxxxxxxxxxxx Fixes: 3ef22dfff239 ("oom, oom_reaper: try to reap tasks which skip regular OOM killer path")Signed-off-by: Vladimir Davydov <vdavydov@xxxxxxxxxxxxx> Acked-by: Michal Hocko <mhocko@xxxxxxxx> Cc: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/oom_kill.c | 2 -- 1 file changed, 2 deletions(-) diff -puN mm/oom_kill.c~mm-oom-do-not-reap-task-if-there-are-live-threads-in-threadgroup mm/oom_kill.c --- a/mm/oom_kill.c~mm-oom-do-not-reap-task-if-there-are-live-threads-in-threadgroup +++ a/mm/oom_kill.c @@ -611,8 +611,6 @@ void try_oom_reaper(struct task_struct * if (!process_shares_mm(p, mm)) continue; - if (same_thread_group(p, tsk)) - continue; if (fatal_signal_pending(p)) continue; _ -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
