UPSTREAM: ALSA: timer: Fix leak in events via snd_timer_user_tinterrupt
(cherry pick from commit e4ec8cc8039a7063e24204299b462bd1383184a5) The stack object “r1” 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. Signed-off-by: Kangjie Lu <kjlu@gatech.edu> Signed-off-by: Takashi Iwai <tiwai@suse.de> Bug: 28980217 Change-Id: If2bba3c9ffb4e57190583b0bb2524d3b2514b2a3
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@ -1215,6 +1215,7 @@ static void snd_timer_user_tinterrupt(struct snd_timer_instance *timeri,
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}
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if ((tu->filter & (1 << SNDRV_TIMER_EVENT_RESOLUTION)) &&
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tu->last_resolution != resolution) {
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memset(&r1, 0, sizeof(r1));
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r1.event = SNDRV_TIMER_EVENT_RESOLUTION;
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r1.tstamp = tstamp;
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r1.val = resolution;
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