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 |
|---|---|---|
| 9p | ||
| adfs | ||
| affs | ||
| afs | ||
| autofs | ||
| autofs4 | ||
| befs | ||
| bfs | ||
| cifs | ||
| coda | ||
| cramfs | ||
| debugfs | ||
| devfs | ||
| devpts | ||
| efs | ||
| exportfs | ||
| ext2 | ||
| ext3 | ||
| fat | ||
| freevxfs | ||
| fuse | ||
| hfs | ||
| hfsplus | ||
| hostfs | ||
| hpfs | ||
| hppfs | ||
| hugetlbfs | ||
| isofs | ||
| jbd | ||
| jffs | ||
| jffs2 | ||
| jfs | ||
| lockd | ||
| minix | ||
| msdos | ||
| ncpfs | ||
| nfs | ||
| nfs_common | ||
| nfsd | ||
| nls | ||
| ntfs | ||
| openpromfs | ||
| partitions | ||
| proc | ||
| qnx4 | ||
| ramfs | ||
| reiserfs | ||
| relayfs | ||
| romfs | ||
| smbfs | ||
| sysfs | ||
| sysv | ||
| udf | ||
| ufs | ||
| vfat | ||
| xfs | ||
| Kconfig | -rw-r--r-- | 63.2 KB |
| Kconfig.binfmt | -rw-r--r-- | 5.3 KB |
| Makefile | -rw-r--r-- | 3.2 KB |
| aio.c | -rw-r--r-- | 43.9 KB |
| attr.c | -rw-r--r-- | 4.4 KB |
| bad_inode.c | -rw-r--r-- | 2.8 KB |
| binfmt_aout.c | -rw-r--r-- | 14.9 KB |
| binfmt_elf.c | -rw-r--r-- | 45.3 KB |
| binfmt_elf_fdpic.c | -rw-r--r-- | 30.3 KB |
| binfmt_em86.c | -rw-r--r-- | 2.8 KB |
| binfmt_flat.c | -rw-r--r-- | 25.8 KB |
| binfmt_misc.c | -rw-r--r-- | 15.6 KB |
| binfmt_script.c | -rw-r--r-- | 2.7 KB |
| binfmt_som.c | -rw-r--r-- | 7.7 KB |
| bio.c | -rw-r--r-- | 28.6 KB |
| block_dev.c | -rw-r--r-- | 21.7 KB |
| buffer.c | -rw-r--r-- | 81.9 KB |
| char_dev.c | -rw-r--r-- | 9.5 KB |
| compat.c | -rw-r--r-- | 45.5 KB |
| compat_ioctl.c | -rw-r--r-- | 85.0 KB |
| dcache.c | -rw-r--r-- | 43.9 KB |
| dcookies.c | -rw-r--r-- | 6.2 KB |
| direct-io.c | -rw-r--r-- | 34.5 KB |
| dnotify.c | -rw-r--r-- | 4.3 KB |
| dquot.c | -rw-r--r-- | 51.7 KB |
| eventpoll.c | -rw-r--r-- | 44.1 KB |
| exec.c | -rw-r--r-- | 34.5 KB |
| fcntl.c | -rw-r--r-- | 13.6 KB |
| fifo.c | -rw-r--r-- | 3.2 KB |
| file.c | -rw-r--r-- | 8.8 KB |
| file_table.c | -rw-r--r-- | 6.2 KB |
| filesystems.c | -rw-r--r-- | 5.2 KB |
| fs-writeback.c | -rw-r--r-- | 19.4 KB |
| inode.c | -rw-r--r-- | 35.8 KB |
| inotify.c | -rw-r--r-- | 26.6 KB |
| ioctl.c | -rw-r--r-- | 3.9 KB |
| ioprio.c | -rw-r--r-- | 3.5 KB |
| libfs.c | -rw-r--r-- | 15.2 KB |
| locks.c | -rw-r--r-- | 55.0 KB |
| mbcache.c | -rw-r--r-- | 18.2 KB |
| mpage.c | -rw-r--r-- | 20.6 KB |
| namei.c | -rw-r--r-- | 59.9 KB |
| namespace.c | -rw-r--r-- | 35.0 KB |
| nfsctl.c | -rw-r--r-- | 2.5 KB |
| open.c | -rw-r--r-- | 23.6 KB |
| pipe.c | -rw-r--r-- | 18.3 KB |
| posix_acl.c | -rw-r--r-- | 8.5 KB |
| quota.c | -rw-r--r-- | 8.6 KB |
| quota_v1.c | -rw-r--r-- | 5.7 KB |
| quota_v2.c | -rw-r--r-- | 20.1 KB |
| read_write.c | -rw-r--r-- | 15.8 KB |
| readdir.c | -rw-r--r-- | 6.7 KB |
| select.c | -rw-r--r-- | 12.4 KB |
| seq_file.c | -rw-r--r-- | 9.5 KB |
| stat.c | -rw-r--r-- | 9.2 KB |
| super.c | -rw-r--r-- | 20.1 KB |
| xattr.c | -rw-r--r-- | 11.0 KB |
| xattr_acl.c | -rw-r--r-- | 2.3 KB |
Computing file changes ...
