Hi all,

Here are a couple of patches fixing the vsock error-handling regression
found by syzbot [1] that I introduced during the recent merge window.

Cheers,

Will

[1] https://lore.kernel.org/all/689a3d92.050a0220.7f033.00ff.GAE@google.com/

Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Christian Brauner <brauner@kernel.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Hillf Danton <hdanton@sina.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Jason Wang <jasowang@redhat.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: Stefan Hajnoczi <stefanha@redhat.com>
Cc: Stefano Garzarella <sgarzare@redhat.com>

--->8

Will Deacon (2):
  net: Introduce skb_copy_datagram_from_iter_full()
  vsock/virtio: Fix message iterator handling on transmit path

 include/linux/skbuff.h                  |  2 ++
 net/core/datagram.c                     | 14 ++++++++++++++
 net/vmw_vsock/virtio_transport_common.c |  8 +++++---
 3 files changed, 21 insertions(+), 3 deletions(-)

-- 
2.51.0.rc1.167.g924127e9c0-goog

On Mon, Aug 18, 2025 at 07:03:53PM +0100, Will Deacon wrote:
> Hi all,
> 
> Here are a couple of patches fixing the vsock error-handling regression
> found by syzbot [1] that I introduced during the recent merge window.
> 
> Cheers,
> 
> Will
> 
> [1] https://lore.kernel.org/all/689a3d92.050a0220.7f033.00ff.GAE@google.com/
> 
> Cc: Alexander Viro <viro@zeniv.linux.org.uk>
> Cc: Christian Brauner <brauner@kernel.org>
> Cc: "David S. Miller" <davem@davemloft.net>
> Cc: Eric Dumazet <edumazet@google.com>
> Cc: Hillf Danton <hdanton@sina.com>
> Cc: Jakub Kicinski <kuba@kernel.org>
> Cc: Jason Wang <jasowang@redhat.com>
> Cc: "Michael S. Tsirkin" <mst@redhat.com>
> Cc: Paolo Abeni <pabeni@redhat.com>
> Cc: Stefan Hajnoczi <stefanha@redhat.com>
> Cc: Stefano Garzarella <sgarzare@redhat.com>
> 
> --->8
> 
> Will Deacon (2):
>   net: Introduce skb_copy_datagram_from_iter_full()
>   vsock/virtio: Fix message iterator handling on transmit path
> 
>  include/linux/skbuff.h                  |  2 ++
>  net/core/datagram.c                     | 14 ++++++++++++++
>  net/vmw_vsock/virtio_transport_common.c |  8 +++++---
>  3 files changed, 21 insertions(+), 3 deletions(-)
> 
> -- 
> 2.51.0.rc1.167.g924127e9c0-goog
> 

Stefano Garzarella is offline at the moment and may not get a chance to
review this for another week. In the meantime I have reviewed this patch
series:

Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>

On Mon, Aug 18, 2025 at 07:03:53PM +0100, Will Deacon wrote:
> Hi all,
> 
> Here are a couple of patches fixing the vsock error-handling regression
> found by syzbot [1] that I introduced during the recent merge window.
> 
> Cheers,
> 
> Will
> 
> [1] https://lore.kernel.org/all/689a3d92.050a0220.7f033.00ff.GAE@google.com/

Acked-by: Michael S. Tsirkin <mst@redhat.com>





> Cc: Alexander Viro <viro@zeniv.linux.org.uk>
> Cc: Christian Brauner <brauner@kernel.org>
> Cc: "David S. Miller" <davem@davemloft.net>
> Cc: Eric Dumazet <edumazet@google.com>
> Cc: Hillf Danton <hdanton@sina.com>
> Cc: Jakub Kicinski <kuba@kernel.org>
> Cc: Jason Wang <jasowang@redhat.com>
> Cc: "Michael S. Tsirkin" <mst@redhat.com>
> Cc: Paolo Abeni <pabeni@redhat.com>
> Cc: Stefan Hajnoczi <stefanha@redhat.com>
> Cc: Stefano Garzarella <sgarzare@redhat.com>
> 
> --->8
> 
> Will Deacon (2):
>   net: Introduce skb_copy_datagram_from_iter_full()
>   vsock/virtio: Fix message iterator handling on transmit path
> 
>  include/linux/skbuff.h                  |  2 ++
>  net/core/datagram.c                     | 14 ++++++++++++++
>  net/vmw_vsock/virtio_transport_common.c |  8 +++++---
>  3 files changed, 21 insertions(+), 3 deletions(-)
> 
> -- 
> 2.51.0.rc1.167.g924127e9c0-goog