Linux Virtualization - Mar 2023 - [syzbot] [net?] [virt?] [io-uring?] [kvm?] BUG: soft lockup in vsock_connect

On Sat, Mar 18, 2023 at 12:32:39AM +0000, Bobby Eshleman
wrote:
> On Fri, Mar 24, 2023 at 09:38:38AM +0100, Stefano Garzarella wrote:
> > Hi Bobby,
> > FYI we have also this one, but it seems related to
> > syzbot+befff0a9536049e7902e at syzkaller.appspotmail.com
> > 
> > Thanks,
> > Stefano
> > 
> 
> Got it, I'll look into it.
> 
It seems you forgot to set skb->sk??

diff --git a/net/vmw_vsock/virtio_transport_common.c
b/net/vmw_vsock/virtio_transport_common.c
index 957cdc01c8e8..d47ad27b409d 100644
--- a/net/vmw_vsock/virtio_transport_common.c
+++ b/net/vmw_vsock/virtio_transport_common.c
@@ -236,6 +236,7 @@ static int virtio_transport_send_pkt_info(struct vsock_sock
*vsk,
        }

        virtio_transport_inc_tx_pkt(vvs, skb);
+       skb_set_owner_w(skb, sk_vsock(vsk));

        return t_ops->send_pkt(skb);
 }