[alsa-devel] [PATCH 01/10] ALSA: opl3: Fix possible negative array index access

Spotted by coverity CID 115196.

Signed-off-by: Takashi Iwai tiwai@suse.de --- sound/drivers/opl3/opl3_midi.c | 5 +++++ 1 file changed, 5 insertions(+)

diff --git a/sound/drivers/opl3/opl3_midi.c b/sound/drivers/opl3/opl3_midi.c index 0c796bcbc0a3..6c6d09a51f42 100644 --- a/sound/drivers/opl3/opl3_midi.c +++ b/sound/drivers/opl3/opl3_midi.c @@ -390,6 +390,11 @@ void snd_opl3_note_on(void *p, int note, int vel, struct snd_midi_channel *chan) voice = snd_opl3_oss_map[chan->number]; }

+ if (voice < 0) { + spin_unlock_irqrestore(&opl3->voice_lock, flags); + return; + } + if (voice < MAX_OPL2_VOICES) { /* Left register block for voices 0 .. 8 */ reg_side = OPL3_LEFT;