linux-kernel - Re: [syzbot] [usb?] [sound?] KMSAN: uninit-value in line6_pod_process

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Message-ID: <tencent_A6BE4B38751776D567BC3C2337FC960C3709@qq.com>
Date: Tue,  2 Apr 2024 10:24:58 +0800
From: Edward Adam Davis <eadavis@...com>
To: syzbot+7fb05ccf7b3d2f9617b3@...kaller.appspotmail.com
Cc: linux-kernel@...r.kernel.org,
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [usb?] [sound?] KMSAN: uninit-value in line6_pod_process_message

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;