The alloc_skb function returns NULL on error. So, test this case and avoid a NULL dereference (skb->data).
Addresses-Coverity-ID: 1484718 ("Dereference null return value") Fixes: afd2daa26c7ab ("Bluetooth: Add support for virtio transport driver") Signed-off-by: John Wood john.wood@gmx.com --- drivers/bluetooth/virtio_bt.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/bluetooth/virtio_bt.c b/drivers/bluetooth/virtio_bt.c index c804db7e90f8..5f82574236c0 100644 --- a/drivers/bluetooth/virtio_bt.c +++ b/drivers/bluetooth/virtio_bt.c @@ -34,6 +34,8 @@ static int virtbt_add_inbuf(struct virtio_bluetooth *vbt) int err;
skb = alloc_skb(1000, GFP_KERNEL); + if (!skb) + return -ENOMEM; sg_init_one(sg, skb->data, 1000);
err = virtqueue_add_inbuf(vq, sg, 1, skb, GFP_KERNEL); -- 2.25.1