From: Rajat Asthana <rajatasthana4@xxxxxxxxx> [ Upstream commit 476db72e521983ecb847e4013b263072bb1110fc ] Syzkaller reported a warning called "rcu detected stall in dummy_timer". The error seems to be an error in mceusb_dev_recv(). In the case of -EPROTO error, the routine immediately resubmits the URB. Instead it should return without resubmitting URB. Reported-by: syzbot+4d3749e9612c2cfab956@xxxxxxxxxxxxxxxxxxxxxxxxx Signed-off-by: Rajat Asthana <rajatasthana4@xxxxxxxxx> Signed-off-by: Sean Young <sean@xxxxxxxx> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/media/rc/mceusb.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/media/rc/mceusb.c b/drivers/media/rc/mceusb.c index d9f88a4a96bd1..b78d70685b1c3 100644 --- a/drivers/media/rc/mceusb.c +++ b/drivers/media/rc/mceusb.c @@ -1090,6 +1090,7 @@ static void mceusb_dev_recv(struct urb *urb) case -ECONNRESET: case -ENOENT: case -EILSEQ: + case -EPROTO: case -ESHUTDOWN: usb_unlink_urb(urb); return; -- 2.33.0
