diff options
| author | Takashi Iwai <tiwai@suse.de> | 2020-12-06 09:35:27 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-01-06 14:48:38 +0100 |
| commit | 3a2a5e197a8452b5af9d964a8fab4cdd06a8c381 (patch) | |
| tree | 54792205303df5a93866779a89b50d514e492f1c /fs | |
| parent | 8d2204a0539192cc75727e8917e1bb6b2a9e40bb (diff) | |
ALSA: rawmidi: Access runtime->avail always in spinlock
commit 88a06d6fd6b369d88cec46c62db3e2604a2f50d5 upstream.
The runtime->avail field may be accessed concurrently while some
places refer to it without taking the runtime->lock spinlock, as
detected by KCSAN. Usually this isn't a big problem, but for
consistency and safety, we should take the spinlock at each place
referencing this field.
Reported-by: syzbot+a23a6f1215c84756577c@syzkaller.appspotmail.com
Reported-by: syzbot+3d367d1df1d2b67f5c19@syzkaller.appspotmail.com
Link: https://lore.kernel.org/r/20201206083527.21163-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs')
0 files changed, 0 insertions, 0 deletions