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| author | Takashi Iwai <tiwai@suse.de> | 2014-10-13 23:14:46 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2014-10-14 09:14:48 +0200 |
| commit | 811deedebab38f8360a700a52b0b75688c9a10f7 (patch) | |
| tree | 8b5ae452e128757cb5acea1ab3303dcc80c82530 /sound/core | |
| parent | 3f4032861cfbff0b9134bf94c5c92e2146d1f068 (diff) | |
| download | linux-811deedebab38f8360a700a52b0b75688c9a10f7.tar.gz linux-811deedebab38f8360a700a52b0b75688c9a10f7.tar.bz2 linux-811deedebab38f8360a700a52b0b75688c9a10f7.zip | |
ALSA: pcm: Fix referred substream in snd_pcm_action_group() unlock loop
In the unlock loop of snd_pcm_action_group(), the object "s" is used
as the check of nonatomic PCM, but it should be rather "s1", which is
the iterator of the loop. This supposedly causes a kernel panic when
the substreams in operatino are linked.
Fixes: 257f8cce5d40 ('ALSA: pcm: Allow nonatomic trigger operations')
Reported-and-tested-by: Arthur Marsh <arthur.marsh@internode.on.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/core')
| -rw-r--r-- | sound/core/pcm_native.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c index 85fe1a216225..bfe1cf6b492f 100644 --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -818,7 +818,7 @@ static int snd_pcm_action_group(struct action_ops *ops, /* unlock streams */ snd_pcm_group_for_each_entry(s1, substream) { if (s1 != substream) { - if (s->pcm->nonatomic) + if (s1->pcm->nonatomic) mutex_unlock(&s1->self_group.mutex); else spin_unlock(&s1->self_group.lock); |