tree e10845e63381a741f60465d808d9b39f18217c6f
parent 7d132055814ef17a6c7b69f342244c410a5e000f
author Ming Lei <ming.lei@canonical.com> 1371285398 +0800
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1371577315 -0700

firmware loader: fix use-after-free by double abort

fw_priv->buf is accessed in both request_firmware_load() and
writing to sysfs file of 'loading' context, but not protected
by 'fw_lock' entirely. The patch makes sure that access on
'fw_priv->buf' is protected by the lock.

So fixes the double abort problem reported by nirinA raseliarison:

	http://lkml.org/lkml/2013/6/14/188

Reported-and-tested-by: nirinA raseliarison <nirina.raseliarison@gmail.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: stable <stable@vger.kernel.org> # 3.9
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>