commit 52c47969 upstream.
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NMarc Zyngier <maz@kernel.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>