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Bluetooth: virtio_bt: add missing null pointer check on alloc_skb call return 

The call to alloc_skb with the GFP_KERNEL flag can return a null sk_buff
pointer, so add a null check to avoid any null pointer deference issues.

Addresses-Coverity: ("Dereference null return value")
Fixes: afd2daa26c ("Bluetooth: Add support for virtio transport driver")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Colin Ian King 2021-04-09 17:53:14 +01:00 committed by Marcel Holtmann
parent 1c6ed31b16
commit 1cb027f2f8
1 changed files with 3 additions and 0 deletions
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3
drivers/bluetooth/virtio_bt.c
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@ -34,6 +34,9 @@ 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);