diff options
| author | Peter Zijlstra <[email protected]> | 2009-11-16 09:28:09 +0000 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2009-11-16 09:46:27 +0000 |
| commit | 047106adcc85e3023da210143a6ab8a55df9e0fc (patch) | |
| tree | dd92c3c65229622bed4b27c60f7d617c9dbf1a2a /fs/proc/array.c | |
| parent | sched, kvm: Fix race condition involving sched_in_preempt_notifers (diff) | |
| download | kernel-047106adcc85e3023da210143a6ab8a55df9e0fc.tar.gz kernel-047106adcc85e3023da210143a6ab8a55df9e0fc.zip | |
sched: Sched_rt_periodic_timer vs cpu hotplug
Heiko reported a case where a timer interrupt managed to
reference a root_domain structure that was already freed by a
concurrent hot-un-plug operation.
Solve this like the regular sched_domain stuff is also
synchronized, by adding a synchronize_sched() stmt to the free
path, this ensures that a root_domain stays present for any
atomic section that could have observed it.
Reported-by: Heiko Carstens <[email protected]>
Signed-off-by: Peter Zijlstra <[email protected]>
Acked-by: Heiko Carstens <[email protected]>
Cc: Gregory Haskins <[email protected]>
Cc: Siddha Suresh B <[email protected]>
Cc: Martin Schwidefsky <[email protected]>
LKML-Reference: <1258363873.26714.83.camel@laptop>
Signed-off-by: Ingo Molnar <[email protected]>
Diffstat (limited to 'fs/proc/array.c')
0 files changed, 0 insertions, 0 deletions