From: Will Deacon <will@kernel.org>
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: syzbot <syzbot+b4d960daf7a3c7c2b7b1@syzkaller.appspotmail.com>,
davem@davemloft.net, edumazet@google.com, eperezma@redhat.com,
horms@kernel.org, jasowang@redhat.com, kuba@kernel.org,
kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
netdev@vger.kernel.org, pabeni@redhat.com, sgarzare@redhat.com,
stefanha@redhat.com, syzkaller-bugs@googlegroups.com,
virtualization@lists.linux.dev, xuanzhuo@linux.alibaba.com
Subject: Re: [syzbot] [kvm?] [net?] [virt?] WARNING in virtio_transport_send_pkt_info
Date: Fri, 15 Aug 2025 11:09:24 +0100 [thread overview]
Message-ID: <aJ8HVCbE-fIoS1U4@willie-the-truck> (raw)
In-Reply-To: <20250812061425-mutt-send-email-mst@kernel.org>
On Tue, Aug 12, 2025 at 06:15:46AM -0400, Michael S. Tsirkin wrote:
> On Tue, Aug 12, 2025 at 03:03:02AM -0700, syzbot wrote:
> > Hello,
> >
> > syzbot has tested the proposed patch but the reproducer is still triggering an issue:
> > WARNING in virtio_transport_send_pkt_info
>
> OK so the issue triggers on
> commit 6693731487a8145a9b039bc983d77edc47693855
> Author: Will Deacon <will@kernel.org>
> Date: Thu Jul 17 10:01:16 2025 +0100
>
> vsock/virtio: Allocate nonlinear SKBs for handling large transmit buffers
>
>
> but does not trigger on:
>
> commit 8ca76151d2c8219edea82f1925a2a25907ff6a9d
> Author: Will Deacon <will@kernel.org>
> Date: Thu Jul 17 10:01:15 2025 +0100
>
> vsock/virtio: Rename virtio_vsock_skb_rx_put()
>
>
>
> Will, I suspect your patch merely uncovers a latent bug
> in zero copy handling elsewhere.
> Want to take a look?
Sorry for the delay, I was debugging something else!
I see Hillf already tried some stuff in the other thread, but I can take
a look as well.
Will
next prev parent reply other threads:[~2025-08-15 10:09 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-11 18:59 [syzbot] [kvm?] [net?] [virt?] WARNING in virtio_transport_send_pkt_info syzbot
2025-08-12 9:26 ` Michael S. Tsirkin
2025-08-12 9:48 ` syzbot
2025-08-12 9:27 ` Michael S. Tsirkin
2025-08-12 10:03 ` syzbot
2025-08-12 10:15 ` Michael S. Tsirkin
2025-08-15 10:09 ` Will Deacon [this message]
2025-08-15 10:44 ` Michael S. Tsirkin
2025-08-15 12:00 ` Will Deacon
2025-08-15 15:48 ` Will Deacon
2025-08-16 0:08 ` Hillf Danton
2025-08-16 0:30 ` syzbot
2025-08-16 10:34 ` Michael S. Tsirkin
2025-08-18 14:52 ` Will Deacon
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