Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Date:   Sun, 26 Mar 2023 12:20:33 -0700
From:   Cong Wang <xiyou.wangcong@gmail.com>
To:     Bobby Eshleman <bobbyeshleman@gmail.com>
Cc:     Stefano Garzarella <sgarzare@redhat.com>,
        Bobby Eshleman <bobby.eshleman@bytedance.com>,
        Bobby Eshleman <bobby.eshleman@gmail.com>,
        syzbot <syzbot+0bc015ebddc291a97116@syzkaller.appspotmail.com>,
        axboe@kernel.dk, davem@davemloft.net, edumazet@google.com,
        io-uring@vger.kernel.org, kuba@kernel.org, kvm@vger.kernel.org,
        linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
        pabeni@redhat.com, stefanha@redhat.com,
        syzkaller-bugs@googlegroups.com,
        virtualization@lists.linux-foundation.org,
        Krasnov Arseniy <oxffffaa@gmail.com>,
        Krasnov Arseniy Vladimirovich <AVKrasnov@sberdevices.ru>
Subject: Re: [syzbot] [net?] [virt?] [io-uring?] [kvm?] BUG: soft lockup in
 vsock_connect
Message-ID: <ZCCbATwov4U+GBUv@pop-os.localdomain>
References: <00000000000075bebb05f79acfde@google.com>
 <CAGxU2F4jxdzK8Y-jaoKRaX_bDhoMtomOT6TyMek+un-Bp8RX3g@mail.gmail.com>
 <ZBUGp5bvNuE3sK5g@bullseye>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <ZBUGp5bvNuE3sK5g@bullseye>
Precedence: bulk

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@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);
 }