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authorOleg Nesterov <oleg@redhat.com>2015-11-05 18:48:20 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2015-11-05 19:34:48 -0800
commit0c1b2d783cf3432490bf1e532c742fffeadc0bf3 (patch)
tree5911c41db08ee6c980d5b748283cec22b016cee5 /mm/oom_kill.c
parent09357814778a38a5ab2d031cba6c9e9fe090c849 (diff)
downloadlinux-0c1b2d783cf3432490bf1e532c742fffeadc0bf3.tar.bz2
mm/oom_kill: remove the wrong fatal_signal_pending() check in oom_kill_process()
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 patch just removes the wrong check along with pr_info(). Signed-off-by: Oleg Nesterov <oleg@redhat.com> Acked-by: David Rientjes <rientjes@google.com> Acked-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Kyle Walker <kwalker@redhat.com> Cc: Stanislav Kozina <skozina@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/oom_kill.c')
-rw-r--r--mm/oom_kill.c4
1 files changed, 0 insertions, 4 deletions
diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index 58f3d2748ced..c837d06dce5a 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -579,11 +579,7 @@ 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);
do_send_sig_info(SIGKILL, SEND_SIG_FORCED, p, true);
}
rcu_read_unlock();