media: af9005: uninitialized variable printked

commit 51d0c99b391f0cac61ad7b827c26f549ee55672c upstream.

If usb_bulk_msg() fails, actual_length can be uninitialized.

Reported-by: syzbot+9d42b7773d2fecd983ab@syzkaller.appspotmail.com
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/media/usb/dvb-usb/af9005.c b/drivers/media/usb/dvb-usb/af9005.c
index 2587197..d273746 100644 (file)
--- a/drivers/media/usb/dvb-usb/af9005.c
+++ b/drivers/media/usb/dvb-usb/af9005.c
@@ -563,7 +563,7 @@ static int af9005_boot_packet(struct usb_device *udev, int type, u8 *reply,
                              u8 *buf, int size)
 {
        u16 checksum;
-       int act_len, i, ret;
+       int act_len = 0, i, ret;
 
        memset(buf, 0, size);
        buf[0] = (u8) (FW_BULKOUT_SIZE & 0xff);