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ALSA: timer: Fix leak in SNDRV_TIMER_IOCTL_PARAMS

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The stack object “tread” has a total size of 32 bytes. Its field
“event” and “val” both contain 4 bytes padding. These 8 bytes
padding bytes are sent to user without being initialized.

b/28980557
Git-commit: cec8f96e49d9be372fdb0c3836dcf31ec71e457e
Git-repo: http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git
Signed-off-by: Kangjie Lu <kjlu@gatech.edu>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Dennis Cagle <d-cagle@codeaurora.org>
(cherry picked from commit cec8f96e49d9be372fdb0c3836dcf31ec71e457e)
Change-Id: I3b42ee147fd0883696f9783f0a38d5bef888a10a
This commit is contained in:
Kangjie Lu 2016-05-03 16:44:07 -04:00 • committed by Gerrit - the friendly Code Review server
parent c6855ffd7f
commit 33618e19f9
1 changed files with 1 additions and 0 deletions
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sound/core/timer.c
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@ -1746,6 +1746,7 @@ static int snd_timer_user_params(struct file *file,
if (tu->timeri->flags & SNDRV_TIMER_IFLG_EARLY_EVENT) { if (tu->timeri->flags & SNDRV_TIMER_IFLG_EARLY_EVENT) {
if (tu->tread) { if (tu->tread) {
struct snd_timer_tread tread; struct snd_timer_tread tread;
memset(&tread, 0, sizeof(tread));
tread.event = SNDRV_TIMER_EVENT_EARLY; tread.event = SNDRV_TIMER_EVENT_EARLY;
tread.tstamp.tv_sec = 0; tread.tstamp.tv_sec = 0;
tread.tstamp.tv_nsec = 0; tread.tstamp.tv_nsec = 0;