This is a note to let you know that I've just added the patch titled virtio_net: Remove BUG() to avoid machine dead to the 5.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: virtio_net-remove-bug-to-avoid-machine-dead.patch and it can be found in the queue-5.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 615868bc535db73535eb3722e23671fc1a42bf90 Author: Xianting Tian <xianting.tian@xxxxxxxxxxxxxxxxx> Date: Sat Jun 5 11:31:00 2021 -0400 virtio_net: Remove BUG() to avoid machine dead [ Upstream commit 85eb1389458d134bdb75dad502cc026c3753a619 ] We should not directly BUG() when there is hdr error, it is better to output a print when such error happens. Currently, the caller of xmit_skb() already did it. Signed-off-by: Xianting Tian <xianting.tian@xxxxxxxxxxxxxxxxx> Reviewed-by: Leon Romanovsky <leonro@xxxxxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index d8ee001d8e8e..5cd55f950032 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -1548,7 +1548,7 @@ static int xmit_skb(struct send_queue *sq, struct sk_buff *skb) if (virtio_net_hdr_from_skb(skb, &hdr->hdr, virtio_is_little_endian(vi->vdev), false, 0)) - BUG(); + return -EPROTO; if (vi->mergeable_rx_bufs) hdr->num_buffers = 0;