blob: 4be85bde82b039e5a21c7971dbd51f5b6490be0a [file] [log] [blame]
From 56fed77e4688c4c0a3c903a5205e9de6dc0268e6 Mon Sep 17 00:00:00 2001
From: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Date: Tue, 12 Nov 2019 10:22:28 +0100
Subject: [PATCH] media: dvb-usb/dvb-usb-urb.c: initialize actlen to 0
commit 569bc8d6a6a50acb5fcf07fb10b8d2d461fdbf93 upstream.
This fixes a syzbot failure since actlen could be uninitialized,
but it was still used.
Syzbot link:
https://syzkaller.appspot.com/bug?extid=6bf9606ee955b646c0e1
Reported-and-tested-by: syzbot+6bf9606ee955b646c0e1@syzkaller.appspotmail.com
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Acked-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
diff --git a/drivers/media/usb/dvb-usb/dvb-usb-urb.c b/drivers/media/usb/dvb-usb/dvb-usb-urb.c
index c1b4e94a37f8..2aabf90d8697 100644
--- a/drivers/media/usb/dvb-usb/dvb-usb-urb.c
+++ b/drivers/media/usb/dvb-usb/dvb-usb-urb.c
@@ -12,7 +12,7 @@
int dvb_usb_generic_rw(struct dvb_usb_device *d, u8 *wbuf, u16 wlen, u8 *rbuf,
u16 rlen, int delay_ms)
{
- int actlen,ret = -ENOMEM;
+ int actlen = 0, ret = -ENOMEM;
if (!d || wbuf == NULL || wlen == 0)
return -EINVAL;
--
2.7.4