MD: Add del_timer_sync to mddev_suspend (fix nasty panic)

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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.

Cc: stable@vger.kernel.org
Signed-off-by: NeilBrown <neilb@suse.de>

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Jonathan Brassow 2012-05-16 04:06:14 -05:00 • committed by NeilBrown

parent 6508fdbf40

commit 0d9f4f135e

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drivers/md/md.c

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