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| author | Takashi Iwai <tiwai@suse.de> | 2016-01-25 11:01:47 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-02-19 14:22:39 -0800 |
| commit | a04cbfbf93a719d9851a0a27972191e472191ed8 (patch) | |
| tree | 106f0d7971f7d92cb06599477867bd10a70fe224 /sound | |
| parent | 3e24e598a4663d244bfc90aa4dbdba8f929f0dd2 (diff) | |
| download | lwn-a04cbfbf93a719d9851a0a27972191e472191ed8.tar.gz lwn-a04cbfbf93a719d9851a0a27972191e472191ed8.zip | |
ALSA: seq: Fix incorrect sanity check at snd_seq_oss_synth_cleanup()
commit 599151336638d57b98d92338aa59c048e3a3e97d upstream.
ALSA sequencer OSS emulation code has a sanity check for currently
opened devices, but there is a thinko there, eventually it spews
warnings and skips the operation wrongly like:
WARNING: CPU: 1 PID: 7573 at sound/core/seq/oss/seq_oss_synth.c:311
Fix this off-by-one error.
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/core/seq/oss/seq_oss_synth.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sound/core/seq/oss/seq_oss_synth.c b/sound/core/seq/oss/seq_oss_synth.c index c5b773a1eea9..4a09c3085ca4 100644 --- a/sound/core/seq/oss/seq_oss_synth.c +++ b/sound/core/seq/oss/seq_oss_synth.c @@ -310,7 +310,7 @@ snd_seq_oss_synth_cleanup(struct seq_oss_devinfo *dp) struct seq_oss_synth *rec; struct seq_oss_synthinfo *info; - if (snd_BUG_ON(dp->max_synthdev >= SNDRV_SEQ_OSS_MAX_SYNTH_DEVS)) + if (snd_BUG_ON(dp->max_synthdev > SNDRV_SEQ_OSS_MAX_SYNTH_DEVS)) return; for (i = 0; i < dp->max_synthdev; i++) { info = &dp->synths[i]; |