From 7a33a02ffb0620b01892c6c6808bb711b3f63e9c Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Thu, 8 Mar 2018 08:32:41 +0100 Subject: [PATCH] ALSA: vmaster: Zero-clear ctl before calling slave get Use kzalloc() instead of kmalloc() so that we don't need to rely fully on the slave get() callback to clear the control value that might be copied to user-space. Signed-off-by: Takashi Iwai --- sound/core/vmaster.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sound/core/vmaster.c b/sound/core/vmaster.c index b67de2bb06a2..9e96186742d0 100644 --- a/sound/core/vmaster.c +++ b/sound/core/vmaster.c @@ -63,7 +63,7 @@ static int slave_update(struct link_slave *slave) struct snd_ctl_elem_value *uctl; int err, ch; - uctl = kmalloc(sizeof(*uctl), GFP_KERNEL); + uctl = kzalloc(sizeof(*uctl), GFP_KERNEL); if (!uctl) return -ENOMEM; uctl->id = slave->slave.id; -- 2.11.0