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| author | Akinobu Mita <akinobu.mita@gmail.com> | 2006-11-23 14:02:33 +0300 |
|---|---|---|
| committer | Jaroslav Kysela <perex@server.perex.cz> | 2006-12-20 10:55:59 +0300 |
| commit | c13893d7be4f159b359a1b7ee46b3646ecb2fe20 (patch) | |
| tree | 3e4bb900eb0776f2a7cc4d36551459d86081c7c8 /sound/core/rawmidi.c | |
| parent | a48bb28c167b5cad1bd4978dbb83c89252caab78 (diff) | |
| download | linux-c13893d7be4f159b359a1b7ee46b3646ecb2fe20.tar.xz | |
[ALSA] sound: initialize rawmidi substream list
If snd_rawmidi_new() failed to allocate substreams for input
(snd_rawmidi_alloc_substreams() failed to populate a
&rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT]), it will try to
free rawmidi instance by snd_rawmidi_free().
But it will cause oops because snd_rawmidi_free() tries to free
both of substreams list but list for output
(&rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT]) is not initialized yet.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
Diffstat (limited to 'sound/core/rawmidi.c')
| -rw-r--r-- | sound/core/rawmidi.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/sound/core/rawmidi.c b/sound/core/rawmidi.c index 269c467ca9bb..0f055bfcbdac 100644 --- a/sound/core/rawmidi.c +++ b/sound/core/rawmidi.c @@ -1385,7 +1385,6 @@ static int snd_rawmidi_alloc_substreams(struct snd_rawmidi *rmidi, struct snd_rawmidi_substream *substream; int idx; - INIT_LIST_HEAD(&stream->substreams); for (idx = 0; idx < count; idx++) { substream = kzalloc(sizeof(*substream), GFP_KERNEL); if (substream == NULL) { @@ -1440,6 +1439,9 @@ int snd_rawmidi_new(struct snd_card *card, char *id, int device, rmidi->device = device; mutex_init(&rmidi->open_mutex); init_waitqueue_head(&rmidi->open_wait); + INIT_LIST_HEAD(&rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substreams); + INIT_LIST_HEAD(&rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substreams); + if (id != NULL) strlcpy(rmidi->id, id, sizeof(rmidi->id)); if ((err = snd_rawmidi_alloc_substreams(rmidi, |