Messages in this thread Patch in this message | | | Date | Tue, 29 Sep 2015 16:18:15 +0200 | From | Oleg Nesterov <> | Subject | [PATCH -mm 1/3] mm/oom_kill: remove the wrong fatal_signal_pending() |
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The fatal_signal_pending() was added to suppress unnecessary "sharing same memory" message, but it can't 100% help anyway because it can be false-negative; SIGKILL can be already dequeued.
And worse, it can be false-positive due to exec or coredump. exec is mostly fine, but coredump is not. It is possible that the group leader has the pending SIGKILL because its sub-thread originated the coredump, in this case we must not skip this process.
We could probably add the additional ->group_exit_task check but this pach just removes fatal_signal_pending(), the extra "Kill process" is unlikely and doesn't really hurt.
Signed-off-by: Oleg Nesterov <oleg@redhat.com> --- mm/oom_kill.c | 2 -- 1 file changed, 2 deletions(-)
diff --git a/mm/oom_kill.c b/mm/oom_kill.c index 4766e25..0d581c6 100644 --- a/mm/oom_kill.c +++ b/mm/oom_kill.c @@ -588,8 +588,6 @@ void oom_kill_process(struct oom_control *oc, struct task_struct *p, !(p->flags & PF_KTHREAD)) { if (p->signal->oom_score_adj == OOM_SCORE_ADJ_MIN) continue; - if (fatal_signal_pending(p)) - continue; pr_info("Kill process %d (%s) sharing same memory\n", task_pid_nr(p), p->comm); -- 2.4.3
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