https://github.com/torvalds/linux
Revision 3de463c7d9d58f8cf3395268230cb20a4c15bffa authored by Oleg Nesterov on 24 October 2005, 10:34:03 UTC, committed by Linus Torvalds on 24 October 2005, 15:12:35 UTC
do_exit() clears ->it_##clock##_expires, but nothing prevents
another cpu to attach the timer to exiting process after that.
After exit_notify() does 'write_unlock_irq(&tasklist_lock)' and
before do_exit() calls 'schedule() local timer interrupt can find
tsk->exit_state != 0. If that state was EXIT_DEAD (or another cpu
does sys_wait4) interrupted task has ->signal == NULL.
At this moment exiting task has no pending cpu timers, they were cleaned
up in __exit_signal()->posix_cpu_timers_exit{,_group}(), so we can just
return from irq.
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
1 parent 108150e
Tip revision: 3de463c7d9d58f8cf3395268230cb20a4c15bffa authored by Oleg Nesterov on 24 October 2005, 10:34:03 UTC
[PATCH] posix-timers: remove false BUG_ON() from run_posix_cpu_timers()
[PATCH] posix-timers: remove false BUG_ON() from run_posix_cpu_timers()
Tip revision: 3de463c
| File | Mode | Size |
|---|---|---|
| Kconfig | -rw-r--r-- | 9.3 KB |
| Makefile | -rw-r--r-- | 1.1 KB |
| aes.c | -rw-r--r-- | 11.3 KB |
| anubis.c | -rw-r--r-- | 27.9 KB |
| api.c | -rw-r--r-- | 5.4 KB |
| arc4.c | -rw-r--r-- | 2.0 KB |
| blowfish.c | -rw-r--r-- | 17.3 KB |
| cast5.c | -rw-r--r-- | 34.6 KB |
| cast6.c | -rw-r--r-- | 22.8 KB |
| cipher.c | -rw-r--r-- | 11.1 KB |
| compress.c | -rw-r--r-- | 1.8 KB |
| crc32c.c | -rw-r--r-- | 2.4 KB |
| crypto_null.c | -rw-r--r-- | 3.3 KB |
| deflate.c | -rw-r--r-- | 5.4 KB |
| des.c | -rw-r--r-- | 35.1 KB |
| digest.c | -rw-r--r-- | 2.5 KB |
| hmac.c | -rw-r--r-- | 3.3 KB |
| internal.h | -rw-r--r-- | 2.6 KB |
| khazad.c | -rw-r--r-- | 52.4 KB |
| md4.c | -rw-r--r-- | 6.1 KB |
| md5.c | -rw-r--r-- | 7.1 KB |
| michael_mic.c | -rw-r--r-- | 3.4 KB |
| proc.c | -rw-r--r-- | 2.7 KB |
| scatterwalk.c | -rw-r--r-- | 2.8 KB |
| scatterwalk.h | -rw-r--r-- | 2.0 KB |
| serpent.c | -rw-r--r-- | 19.8 KB |
| sha1.c | -rw-r--r-- | 3.2 KB |
| sha256.c | -rw-r--r-- | 11.1 KB |
| sha512.c | -rw-r--r-- | 10.8 KB |
| tcrypt.c | -rw-r--r-- | 30.2 KB |
| tcrypt.h | -rw-r--r-- | 100.3 KB |
| tea.c | -rw-r--r-- | 6.5 KB |
| tgr192.c | -rw-r--r-- | 31.9 KB |
| twofish.c | -rw-r--r-- | 44.9 KB |
| wp512.c | -rw-r--r-- | 60.7 KB |
Computing file changes ...
