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| author | Oleg Nesterov <oleg@tv-sign.ru> | 2007-05-09 11:34:20 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-09 21:30:53 +0200 |
| commit | 85f4186af944c1240c84934a9ab578743df2d69b (patch) | |
| tree | 743d6a619538cda98495aaaac67a86246d3007e4 /kernel/signal.c | |
| parent | worker_thread: don't play with signals (diff) | |
| download | linux-85f4186af944c1240c84934a9ab578743df2d69b.tar.xz linux-85f4186af944c1240c84934a9ab578743df2d69b.zip | |
worker_thread: fix racy try_to_freeze() usage
worker_thread() can miss freeze_process()->signal_wake_up() if it happens
between try_to_freeze() and prepare_to_wait(). We should check freezing()
before entering schedule().
This race was introduced by me in
[PATCH 1/1] workqueue: don't migrate pending works from the dead CPU
Looks like mm/vmscan.c:kswapd() has the same race.
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/signal.c')
0 files changed, 0 insertions, 0 deletions