| commit | 5b6cc38f3f3f37109ce72b60bda215a5f6892c0b | [log] [tgz] |
|---|---|---|
| author | Takashi Iwai <tiwai@suse.de> | Fri Apr 24 09:40:16 2020 +0200 |
| committer | Takashi Iwai <tiwai@suse.de> | Fri Apr 24 09:55:08 2020 +0200 |
| tree | fb7bf4df502f86f6cf8ce5d48bafe316a31ecf72 | |
| parent | 04c96460bfdb483de5aaad0f9f75b2f3eca500be [diff] |
ALSA: usb-audio: Fix racy list management in output queue
The linked list entry from FIFO is peeked at
queue_pending_output_urbs() but the actual element pop-out is
performed outside the spinlock, and it's potentially racy.
Do delete the link at the right place inside the spinlock.
Fixes: 8fdff6a319e7 ("ALSA: snd-usb: implement new endpoint streaming model")
Link: https://lore.kernel.org/r/20200424074016.14301-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>