Re: 2.6.4: Oops on rmmod uhci-hcd when device is still accessed

[Greg KH]

On Thu, Mar 18, 2004 at 12:22:03AM +0100, Jakub Bogusz wrote:
> It's in drivers/usb/core/devio.c:388:
> 
> |        down(&dev->serialize);
> |        if (test_and_clear_bit(intf, &ps->ifclaimed)) {
> |                iface = dev->actconfig->interface[intf];
>                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> |                usb_driver_release_interface(&usbdevfs_driver, iface);
> |                err = 0;
> |        }
> |        up(&dev->serialize);
> 
> and looks like dev->actconfig is NULL

Yeah, there's a lot of nasty race conditions with usbfs that have been
around for ages.  I think someone on the linux-usb-devel mailing list
has been working on fixing them all up and has a patch set you might be
able to test.

Hope this helps,

greg k-h
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/