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| author | Yafang Shao <laoar.shao@gmail.com> | 2020-08-12 03:31:32 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-08-12 19:57:56 +0200 |
| commit | 619b5b469bcab84ea3bee1d8d04451c781d23feb (patch) | |
| tree | 194a09ba036cd452f3e1bd34f67edf1dbedb58cc /mm | |
| parent | doc, mm: clarify /proc/<pid>/oom_score value range (diff) | |
| download | linux-619b5b469bcab84ea3bee1d8d04451c781d23feb.tar.xz linux-619b5b469bcab84ea3bee1d8d04451c781d23feb.zip | |
mm, oom: show process exiting information in __oom_kill_process()
When the OOM killer finds a victim and tryies to kill it, if the victim is
already exiting, the task mm will be NULL and no process will be killed.
But the dump_header() has been already executed, so it will be strange to
dump so much information without killing a process. We'd better show some
helpful information to indicate why this happens.
Suggested-by: David Rientjes <rientjes@google.com>
Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Cc: Qian Cai <cai@lca.pw>
Link: http://lkml.kernel.org/r/20200721010127.17238-1-laoar.shao@gmail.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/oom_kill.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/mm/oom_kill.c b/mm/oom_kill.c index 48e0db54d838..e90f25d6385d 100644 --- a/mm/oom_kill.c +++ b/mm/oom_kill.c @@ -861,6 +861,8 @@ static void __oom_kill_process(struct task_struct *victim, const char *message) p = find_lock_task_mm(victim); if (!p) { + pr_info("%s: OOM victim %d (%s) is already exiting. Skip killing the task\n", + message, task_pid_nr(victim), victim->comm); put_task_struct(victim); return; } else if (victim != p) { |