tree e5d0be79fbfd9de5e5d5ba49baa4fc04f4acb899
parent 6cea5f2173440d324b0172373a95408323f28911
author Alexey Khoroshilov <khoroshilov@ispras.ru> 1396038375 +0400
committer John W. Linville <linville@tuxdriver.com> 1396288061 -0400

rtl8187: fix use after free on failure path in rtl8187_probe()

If allocation of io_dmabuf fails, rtl8187_probe() calls usb_put_dev(udev)
while usb_get_dev(udev) is not called yet. As a result refcnt is decremented
incorrectly and usb_dev can be used after memory deallocation.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Acked-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>