At Fri, 15 Mar 2013 09:14:22 +0300, Dan Carpenter wrote:

"chn" here is a number between 0 and 255, but ->chn_info[] only has 16 elements so there is a potential write beyond the end of the array.

If the seq_mode isn't SEQ_2 then we let the individual drivers (either opl3.c or midi_synth.c) handle it. Those functions all do a bounds check on "chn" so I haven't changed anything here. The opl3.c driver has up to 18 channels and not 16.

Signed-off-by: Dan Carpenter dan.carpenter@oracle.com

Thanks, applied now.

Takashi

---

Static checker stuff.

diff --git a/sound/oss/sequencer.c b/sound/oss/sequencer.c index 30bcfe4..4ff60a6 100644 --- a/sound/oss/sequencer.c +++ b/sound/oss/sequencer.c @@ -545,6 +545,9 @@ static void seq_chn_common_event(unsigned char *event_rec) case MIDI_PGM_CHANGE: if (seq_mode == SEQ_2) {

• 		if (chn > 15)
  

• 			break;
  

• 	synth_devs[dev]->chn_info[chn].pgm_num = p1;
  	if ((int) dev >= num_synths)
  		synth_devs[dev]->set_instr(dev, chn, p1);
  

@@ -596,6 +599,9 @@ static void seq_chn_common_event(unsigned char *event_rec) case MIDI_PITCH_BEND: if (seq_mode == SEQ_2) {

• 		if (chn > 15)
  

• 			break;
  

• 	synth_devs[dev]->chn_info[chn].bender_value = w14;
  
  	if ((int) dev < num_synths)