Linux Virtualization - Jun 2019 - memory leak in vhost_net_ioctl

Hello Jason

On Thu, 13 Jun 2019 17:10:39 +0800 Jason Wang wrote:
> 
> This is basically a kfree(ubuf) after the second vhost_net_flush() in
> vhost_net_release().
> 
Fairly good catch.
> Could you please post a formal patch?
> 
I'd like very much to do that; but I wont, I am afraid, until I collect a
Tested-by because of reproducer without a cutting edge.

Thanks
Hillf

On Thu, Jun 13, 2019 at 2:07 PM Hillf Danton <hdanton at sina.com>
wrote:
>
>
> Hello Jason
>
> On Thu, 13 Jun 2019 17:10:39 +0800 Jason Wang wrote:
> >
> > This is basically a kfree(ubuf) after the second vhost_net_flush() in
> > vhost_net_release().
> >
> Fairly good catch.
>
> > Could you please post a formal patch?
> >
> I'd like very much to do that; but I wont, I am afraid, until I collect
a
> Tested-by because of reproducer without a cutting edge.
You can easily collect Tested-by from syzbot for any bug with a reproducer ;)
https://github.com/google/syzkaller/blob/master/docs/syzbot.md#testing-patches