| commit | 4021cb279a532728c3208a16b9b09b0ca8016850 | |
| author | Ingo Molnar <mingo@elte.hu> | |
| Wed, 25 Jan 2006 14:23:07 +0000 (25 15:23 +0100) | ||
| committer | Linus Torvalds <torvalds@g5.osdl.org> | |
| Tue, 31 Jan 2006 19:30:18 +0000 (31 11:30 -0800) | ||
| tree | 1103bc655772ea388eb1fb2b259797bc9c703926 | treesnapshot (tar.gz zip) |
| parent | d5bee775137c56ed993f1b3c9d66c268b3525d7d | commitdiff |
[PATCH] fix uidhash_lock <-> RCU deadlock
RCU task-struct freeing can call free_uid(), which is taking
uidhash_lock - while other users of uidhash_lock are softirq-unsafe.
The fix is to always take the uidhash_spinlock in a softirq-safe manner.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Paul E. McKenney <paulmck@us.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
RCU task-struct freeing can call free_uid(), which is taking
uidhash_lock - while other users of uidhash_lock are softirq-unsafe.
The fix is to always take the uidhash_spinlock in a softirq-safe manner.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Paul E. McKenney <paulmck@us.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| kernel/user.c | diffblobblamehistory |