From 476db72e521983ecb847e4013b263072bb1110fc Mon Sep 17 00:00:00 2001 From: Rajat Asthana Date: Wed, 18 Aug 2021 22:31:10 +0200 Subject: [PATCH] media: mceusb: return without resubmitting URB in case of -EPROTO error. 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@syzkaller.appspotmail.com Signed-off-by: Rajat Asthana Signed-off-by: Sean Young Signed-off-by: Mauro Carvalho Chehab --- 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 28bf78ff246a..d09bee82c04c 100644 --- a/drivers/media/rc/mceusb.c +++ b/drivers/media/rc/mceusb.c @@ -1386,6 +1386,7 @@ static void mceusb_dev_recv(struct urb *urb) case -ECONNRESET: case -ENOENT: case -EILSEQ: + case -EPROTO: case -ESHUTDOWN: usb_unlink_urb(urb); return;