Commit 7a33a02f authored Mar 08, 2018 by Takashi Iwai

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 <tiwai@suse.de>

parent 2e2c177c

sound/core/vmaster.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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;