Revision 855b018325737f7691f9b7d86339df40aa4e47c3 authored by Michal Hocko on 25 March 2016, 21:20:36 UTC, committed by Linus Torvalds on 25 March 2016, 23:37:42 UTC
Tetsuo has reported that oom_kill_allocating_task=1 will cause oom_reaper_list corruption because oom_kill_process doesn't follow standard OOM exclusion (aka ignores TIF_MEMDIE) and allows to enqueue the same task multiple times - e.g. by sacrificing the same child multiple times. This patch fixes the issue by introducing a new MMF_OOM_KILLED mm flag which is set in oom_kill_process atomically and oom reaper is disabled if the flag was already set. Signed-off-by: Michal Hocko <mhocko@suse.com> Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Cc: David Rientjes <rientjes@google.com> Cc: Mel Gorman <mgorman@techsingularity.net> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Hugh Dickins <hughd@google.com> Cc: Rik van Riel <riel@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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| File | Mode | Size |
|---|---|---|
| .gitignore | -rw-r--r-- | 151 bytes |
| Kconfig | -rw-r--r-- | 2.9 KB |
| Makefile | -rw-r--r-- | 2.3 KB |
| gen_init_cpio.c | -rw-r--r-- | 12.7 KB |
| initramfs_data.S | -rw-r--r-- | 1.3 KB |
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