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If the usbtest driver encounters a device with an IN bulk endpoint but no OUT bulk endpoint, it will try to dereference a NULL pointer (out->desc.bEndpointAddress). The problem can be solved by adding a missing test. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Reported-by: Andrey Konovalov <andreyknvl@google.com> Tested-by: Andrey Konovalov <andreyknvl@google.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>