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    Subject[PATCH 5.4 19/90] media: dvb-usb/dvb-usb-urb.c: initialize actlen to 0
    Date
    From: Hans Verkuil <hverkuil-cisco@xs4all.nl>

    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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    drivers/media/usb/dvb-usb/dvb-usb-urb.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    --- 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;

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