virtio_net: fix return value check in receive_mergeable()
authorYunjian Wang <wangyunjian@huawei.com>
Mon, 4 Dec 2017 06:02:19 +0000 (14:02 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sun, 25 Feb 2018 10:08:00 +0000 (11:08 +0100)
commitf04764307af8ae268b133c5066068246574a3e39
treea03313548678c35198b65fed69dd2ed9b49e1df3
parent64313a130c3d79561b55a9d82e5b3ffb9353b824
virtio_net: fix return value check in receive_mergeable()

[ Upstream commit 03e9f8a05bce7330bcd9c5cc54c8e42d0fcbf993 ]

The function virtqueue_get_buf_ctx() could return NULL, the return
value 'buf' need to be checked with NULL, not value 'ctx'.

Signed-off-by: Yunjian Wang <wangyunjian@huawei.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/net/virtio_net.c