xhci: Fix list corruption in urb dequeue at host removal

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commit 5c82171167 upstream.

xhci driver frees data for all devices, both usb2 and and usb3 the
first time usb_remove_hcd() is called, including td_list and and xhci_ring
structures.

When usb_remove_hcd() is called a second time for the second xhci bus it
will try to dequeue all pending urbs, and touches td_list which is already
freed for that endpoint.

Reported-by: Joe Lawrence <joe.lawrence@stratus.com>
Tested-by: Joe Lawrence <joe.lawrence@stratus.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

This commit is contained in:

Mathias Nyman 2016-01-26 17:50:12 +02:00 • committed by Greg Kroah-Hartman

parent d15298509b

commit 71e5a4a747

1 changed files with 3 additions and 1 deletions

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drivers/usb/host/xhci.c

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