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(parent: d137773) | patch
ALSA: hda - fix use-after-free after module unload
authorPeter Wu <peter@lekensteyn.nl>
Mon, 11 Jul 2016 17:51:06 +0000 (19:51 +0200)
committerTakashi Iwai <tiwai@suse.de>
Mon, 11 Jul 2016 18:07:46 +0000 (20:07 +0200)
commit0a4735d40e6724d8539330044e70bf3b5937b38a
tree41f7edec506cd28202c41de3637337e0d8dfcf8dtree | snapshot
parentd137773e7d567111f350d413b2027b1c07e85802commit | diff
ALSA: hda - fix use-after-free after module unload

register_vga_switcheroo() sets the PM ops from the hda structure which
is freed later in azx_free. Make sure that these ops are cleared.

Caught by KASAN, initially noticed due to a general protection fault.

Fixes: ddcc03021620 ("snd/hda: add runtime suspend/resume on optimus support (v4)")
Signed-off-by: Peter Wu <peter@lekensteyn.nl>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
sound/pci/hda/hda_intel.c diff | blob | history
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