From: Hans Verkuil Date: Thu, 11 Mar 2021 14:46:40 +0000 (+0100) Subject: media: gspca/sq905.c: fix uninitialized variable X-Git-Tag: iomap-folio-5.17-old~1561^2~292 X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=eaaea4681984c79d2b2b160387b297477f0c1aab;p=users%2Fwilly%2Flinux.git media: gspca/sq905.c: fix uninitialized variable act_len can be uninitialized if usb_bulk_msg() returns an error. Set it to 0 to avoid a KMSAN error. Signed-off-by: Hans Verkuil Reported-by: syzbot+a4e309017a5f3a24c7b3@syzkaller.appspotmail.com Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/usb/gspca/sq905.c b/drivers/media/usb/gspca/sq905.c index 97799cfb832e..949111070971 100644 --- a/drivers/media/usb/gspca/sq905.c +++ b/drivers/media/usb/gspca/sq905.c @@ -158,7 +158,7 @@ static int sq905_read_data(struct gspca_dev *gspca_dev, u8 *data, int size, int need_lock) { int ret; - int act_len; + int act_len = 0; gspca_dev->usb_buf[0] = '\0'; if (need_lock)