From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
[ Upstream commit 1cb027f2f803d0a7abe9c291f0625e6bccd25999 ]
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: afd2daa26c7a ("Bluetooth: Add support for virtio transport driver")
Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
Signed-off-by: Marcel Holtmann <marcel@xxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/bluetooth/virtio_bt.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/bluetooth/virtio_bt.c b/drivers/bluetooth/virtio_bt.c
index c804db7e90f8..57908ce4fae8 100644
--- a/drivers/bluetooth/virtio_bt.c
+++ b/drivers/bluetooth/virtio_bt.c
@@ -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);
--
2.30.2
