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| author | Takashi Iwai <tiwai@suse.de> | 2022-07-28 14:59:44 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2022-07-29 12:57:11 +0200 |
| commit | 96b097091c66df4f6fbf5cbff21df6cc02a2f055 (patch) | |
| tree | 71623428159e0aeb4141102c3d0b7b53d47bfbf0 /include/sound | |
| parent | ALSA: timer: Use deferred fasync helper (diff) | |
| download | linux-96b097091c66df4f6fbf5cbff21df6cc02a2f055.tar.xz linux-96b097091c66df4f6fbf5cbff21df6cc02a2f055.zip | |
ALSA: pcm: Use deferred fasync helper
For avoiding the potential deadlock via kill_fasync() call, use the
new fasync helpers to defer the invocation from timer API. Note that
it's merely a workaround.
Reported-by: syzbot+8285e973a41b5aa68902@syzkaller.appspotmail.com
Reported-by: syzbot+669c9abf11a6a011dd09@syzkaller.appspotmail.com
Link: https://lore.kernel.org/r/20220728125945.29533-4-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'include/sound')
| -rw-r--r-- | include/sound/pcm.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/sound/pcm.h b/include/sound/pcm.h index 2d03c10f6a36..8c48a5bce88c 100644 --- a/include/sound/pcm.h +++ b/include/sound/pcm.h @@ -399,7 +399,7 @@ struct snd_pcm_runtime { snd_pcm_uframes_t twake; /* do transfer (!poll) wakeup if non-zero */ wait_queue_head_t sleep; /* poll sleep */ wait_queue_head_t tsleep; /* transfer sleep */ - struct fasync_struct *fasync; + struct snd_fasync *fasync; bool stop_operating; /* sync_stop will be called */ struct mutex buffer_mutex; /* protect for buffer changes */ atomic_t buffer_accessing; /* >0: in r/w operation, <0: blocked */ |