Re: [PATCH net] vhost-vsock: fix use after free

[Sergei Shtylyov]

Hello!

On 9/27/2018 11:43 AM, Jason Wang wrote:

   Just a couple of typos...

> The access of vsock is not protected by vhost_vsock_lock. This may
> lead use after free since vhost_vsock_dev_release() may free the

  Lead to use.

> pointer at the same time.
>
> Fix this by holding the lock during the acess.

   Access.

> Reported-by: syzbot+e3e074963495f92a89ed@xxxxxxxxxxxxxxxxxxxxxxxxx
> Fixes: 16320f363ae1 ("vhost-vsock: add pkt cancel capability")
> Fixes: 433fc58e6bf2 ("VSOCK: Introduce vhost_vsock.ko")
> Cc: Stefan Hajnoczi <stefanha@xxxxxxxxxx>
> Signed-off-by: Jason Wang <jasowang@xxxxxxxxxx>
[...]

MBR, Sergei