diff options
| author | Jonathan Brassow <jbrassow@redhat.com> | 2012-05-16 04:06:14 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-05-21 09:40:03 -0700 |
| commit | f4f388bce9ef18d7ab4e234495d52cc7e716ab3b (patch) | |
| tree | a8035610dadbe1d72c143ea7a43170ca73e38049 /drivers | |
| parent | 04a4aeb4052eec420eb1a50ab1cba1f359223e37 (diff) | |
MD: Add del_timer_sync to mddev_suspend (fix nasty panic)
commit 0d9f4f135eb6dea06bdcb7065b1e4ff78274a5e9 upstream.
Use del_timer_sync to remove timer before mddev_suspend finishes.
We don't want a timer going off after an mddev_suspend is called. This is
especially true with device-mapper, since it can call the destructor function
immediately following a suspend. This results in the removal (kfree) of the
structures upon which the timer depends - resulting in a very ugly panic.
Therefore, we add a del_timer_sync to mddev_suspend to prevent this.
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/md/md.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index bc8342812d06..a2b3f21d8ad6 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -348,6 +348,8 @@ void mddev_suspend(mddev_t *mddev) synchronize_rcu(); wait_event(mddev->sb_wait, atomic_read(&mddev->active_io) == 0); mddev->pers->quiesce(mddev, 1); + + del_timer_sync(&mddev->safemode_timer); } EXPORT_SYMBOL_GPL(mddev_suspend); |