]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
mm, oom: dump stack of victim when reaping failed
authorDavid Rientjes <rientjes@google.com>
Fri, 31 Jan 2020 06:14:26 +0000 (22:14 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Fri, 31 Jan 2020 18:30:38 +0000 (10:30 -0800)
commit8a7ff02acabbd877669fecb0a2e75d0930b62c85
treeb2860820529296eb85d8268147f64af18433accc
parenta090d711dd2ebd7e445bf09f98a4feba6c22f2ff
mm, oom: dump stack of victim when reaping failed

When a process cannot be oom reaped, for whatever reason, currently the
list of locks that are held is currently dumped to the kernel log.

Much more interesting is the stack trace of the victim that cannot be
reaped.  If the stack trace is dumped, we have the ability to find
related occurrences in the same kernel code and hopefully solve the
issue that is making it wedged.

Dump the stack trace when a process fails to be oom reaped.

Link: http://lkml.kernel.org/r/alpine.DEB.2.21.2001141519280.200484@chino.kir.corp.google.com
Signed-off-by: David Rientjes <rientjes@google.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/oom_kill.c