From d987de580cecd4f37891460c59a2e940c238b8d2 Mon Sep 17 00:00:00 2001 From: Oliver Neukum Date: Thu, 21 Nov 2019 11:37:10 +0100 Subject: [PATCH] nfc: port100: handle command failure cleanly commit 5f9f0b11f0816b35867f2cf71e54d95f53f03902 upstream. If starting the transfer of a command suceeds but the transfer for the reply fails, it is not enough to initiate killing the transfer for the command may still be running. You need to wait for the killing to finish before you can reuse URB and buffer. Reported-and-tested-by: syzbot+711468aa5c3a1eabf863@syzkaller.appspotmail.com Signed-off-by: Oliver Neukum Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- drivers/nfc/port100.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/nfc/port100.c b/drivers/nfc/port100.c index bb43cebda9dc..60ae382f50da 100644 --- a/drivers/nfc/port100.c +++ b/drivers/nfc/port100.c @@ -792,7 +792,7 @@ static int port100_send_frame_async(struct port100 *dev, struct sk_buff *out, rc = port100_submit_urb_for_ack(dev, GFP_KERNEL); if (rc) - usb_unlink_urb(dev->out_urb); + usb_kill_urb(dev->out_urb); exit: mutex_unlock(&dev->out_urb_lock); -- 2.20.1