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 --- sound/core/pcm_native.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
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);