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| author | Cássio Gabriel <cassiogabrielcontato@gmail.com> | 2026-05-21 08:01:23 -0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2026-05-25 09:19:44 +0200 |
| commit | 98fb1c1bb11e29eb609b7200a25e136e05aa4498 (patch) | |
| tree | 526726b26739abe0c10b829861a2235ec27220a6 /lib/objpool.c | |
| parent | 2519003dd5fb6f89f10f031e3a97ecb7c9d1b816 (diff) | |
ALSA: firewire-motu: Protect register DSP event queue positions
The register DSP event queue is updated under parser->lock, but
snd_motu_register_dsp_message_parser_count_event() reads pull_pos and
push_pos without the lock.
snd_motu_register_dsp_message_parser_copy_event() also reads both queue
positions before taking the lock.
Protect these accesses with parser->lock as well. This keeps the hwdep
poll/read path consistent with the producer side and with the cached
meter/parameter accessors.
Fixes: 634ec0b2906e ("ALSA: firewire-motu: notify event for parameter change in register DSP model")
Cc: stable@vger.kernel.org
Signed-off-by: Cássio Gabriel <cassiogabrielcontato@gmail.com>
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20260521-alsa-firewire-motu-event-locking-v1-1-708e1c2b5e56@gmail.com
Diffstat (limited to 'lib/objpool.c')
0 files changed, 0 insertions, 0 deletions