Re: [syzbot] [usb?] [sound?] KMSAN: uninit-value in line6_pod_process_message

From: Edward Adam Davis
Date: Mon Apr 01 2024 - 22:25:17 EST


please test uninit-value in line6_pod_process_message

#syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master

diff --git a/sound/usb/line6/driver.c b/sound/usb/line6/driver.c
index b67617b68e50..8fd9d42aa8e2 100644
--- a/sound/usb/line6/driver.c
+++ b/sound/usb/line6/driver.c
@@ -697,7 +697,7 @@ static int line6_init_cap_control(struct usb_line6 *line6)
return -ENOMEM;

if (line6->properties->capabilities & LINE6_CAP_CONTROL_MIDI) {
- line6->buffer_message = kmalloc(LINE6_MIDI_MESSAGE_MAXLEN, GFP_KERNEL);
+ line6->buffer_message = kzalloc(LINE6_MIDI_MESSAGE_MAXLEN, GFP_KERNEL);
if (!line6->buffer_message)
return -ENOMEM;