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| author |   Takashi Iwai <tiwai@suse.de> | 2009-06-08 15:07:46 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2009-06-08 15:07:46 +0200 |
| commit | af8500bbbd18438495d2f91ad07bda49fff3b770 (patch) | |
| tree | 437f4fd3e62ce626077a36d1b9045498c7d2be57 /sound/pci | |
| parent | ALSA: ctxfi - Remove useless initializations and cast (diff) | |
| download | linux-dev-af8500bbbd18438495d2f91ad07bda49fff3b770.tar.xz linux-dev-af8500bbbd18438495d2f91ad07bda49fff3b770.zip | |
ALSA: ctxfi - Fix possible buffer pointer overrun
Fix possible buffer pointer overruns. Back to zero when it's equal
or over the buffer size.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci')
| -rw-r--r-- | sound/pci/ctxfi/ctpcm.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sound/pci/ctxfi/ctpcm.c b/sound/pci/ctxfi/ctpcm.c index a0bd31c6090d..870fa170f046 100644 --- a/sound/pci/ctxfi/ctpcm.c +++ b/sound/pci/ctxfi/ctpcm.c @@ -243,6 +243,8 @@ ct_pcm_playback_pointer(struct snd_pcm_substream *substream) /* Read out playback position */ position = atc->pcm_playback_position(atc, apcm); position = bytes_to_frames(runtime, position); + if (position >= runtime->buffer_size) + position = 0; return position; } @@ -343,6 +345,8 @@ ct_pcm_capture_pointer(struct snd_pcm_substream *substream) /* Read out playback position */ position = atc->pcm_capture_position(atc, apcm); position = bytes_to_frames(runtime, position); + if (position >= runtime->buffer_size) + position = 0; return position; } |