tree 1b68c534f868ec086cf78e864888c99bdb70f5b5
parent 82262a46627bebb0febcc26664746c25cef08563
author Lars-Peter Clausen <lars@metafoo.de> 1403091153 +0200
committer Takashi Iwai <tiwai@suse.de> 1403097187 +0200

ALSA: control: Don't access controls outside of protected regions

A control that is visible on the card->controls list can be freed at any time.
This means we must not access any of its memory while not holding the
controls_rw_lock. Otherwise we risk a use after free access.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Jaroslav Kysela <perex@perex.cz>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>