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| author | Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> | 2018-04-05 16:25:45 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-04-05 21:36:27 -0700 |
| commit | 97b1255cb27c551d7c3c5c496d787da40772da99 (patch) | |
| tree | 67235d45eb2553194419d9d8a81b27712ed0811a | |
| parent | 77da2ba0648a4fd52e5ff97b8b2b8dd312aec4b0 (diff) | |
| download | linux-97b1255cb27c551d7c3c5c496d787da40772da99.tar.bz2 | |
mm,oom_reaper: check for MMF_OOM_SKIP before complaining
I got "oom_reaper: unable to reap pid:" messages when the victim thread
was blocked inside free_pgtables() (which occurred after returning from
unmap_vmas() and setting MMF_OOM_SKIP). We don't need to complain when
exit_mmap() already set MMF_OOM_SKIP.
Killed process 7558 (a.out) total-vm:4176kB, anon-rss:84kB, file-rss:0kB, shmem-rss:0kB
oom_reaper: unable to reap pid:7558 (a.out)
a.out D13272 7558 6931 0x00100084
Call Trace:
schedule+0x2d/0x80
rwsem_down_write_failed+0x2bb/0x440
call_rwsem_down_write_failed+0x13/0x20
down_write+0x49/0x60
unlink_file_vma+0x28/0x50
free_pgtables+0x36/0x100
exit_mmap+0xbb/0x180
mmput+0x50/0x110
copy_process.part.41+0xb61/0x1fe0
_do_fork+0xe6/0x560
do_syscall_64+0x74/0x230
entry_SYSCALL_64_after_hwframe+0x42/0xb7
Link: http://lkml.kernel.org/r/201803221946.DHG65638.VFJHFtOSQLOMOF@I-love.SAKURA.ne.jp
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Acked-by: David Rientjes <rientjes@google.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | mm/oom_kill.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/mm/oom_kill.c b/mm/oom_kill.c index c4c9ecd17c6e..ff992fa8760a 100644 --- a/mm/oom_kill.c +++ b/mm/oom_kill.c @@ -590,7 +590,8 @@ static void oom_reap_task(struct task_struct *tsk) while (attempts++ < MAX_OOM_REAP_RETRIES && !__oom_reap_task_mm(tsk, mm)) schedule_timeout_idle(HZ/10); - if (attempts <= MAX_OOM_REAP_RETRIES) + if (attempts <= MAX_OOM_REAP_RETRIES || + test_bit(MMF_OOM_SKIP, &mm->flags)) goto done; |