Hi,
hcd_data_lock is taken too late.
static int hcd_submit_urb (struct urb *urb, int mem_flags)
{
int status;
struct usb_hcd *hcd = urb->dev->bus->hcpriv;
You've just followed a pointer that you haven't validated.
If the driver has improper locking, your potentially dead.
That's why the driver has to lock usb_submit_urb() against
driver->disconnect() and you need to unlink the urbs
after it.
Regards
Oliver
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