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SubjectRe: WARNING in usbhid_raw_request/usb_submit_urb (2)
On Tue, 7 Jan 2020, syzbot wrote:

> Hello,
>
> syzbot has tested the proposed patch but the reproducer still triggered
> crash:
> WARNING in usbhid_raw_request/usb_submit_urb

All right, now for a slightly larger change.

Alan Stern

#syz test: https://github.com/google/kasan.git ecdf2214

Index: usb-devel/drivers/usb/core/urb.c
===================================================================
--- usb-devel.orig/drivers/usb/core/urb.c
+++ usb-devel/drivers/usb/core/urb.c
@@ -205,7 +205,7 @@ int usb_urb_ep_type_check(const struct u

ep = usb_pipe_endpoint(urb->dev, urb->pipe);
if (!ep)
- return -EINVAL;
+ return -EBADF;
if (usb_pipetype(urb->pipe) != pipetypes[usb_endpoint_type(&ep->desc)])
return -EINVAL;
return 0;
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