[dpdk-dev] [PATCH] vhost: fix segfault on bad descriptor address.

[Yuanhan Liu]

On Wed, Jul 13, 2016 at 08:54:08AM -0700, Rich Lane wrote:
> On Wednesday, July 13, 2016, Yuanhan Liu <yuanhan.liu at linux.intel.com> wrote:
> 
>     On Wed, Jul 13, 2016 at 10:34:07AM +0300, Ilya Maximets wrote:
>     > This scenario fixed somehow, I agree. But this patch still needed to
>     protect
>     > vhost from untrusted VM, from malicious or buggy virtio application.
>     > Maybe we could change the commit-message and resend this patch as a
>     > security enhancement? What do you think?
> 
>     Indeed, but I'm a bit concerned about the performance regression found
>     by Rich, yet I am not quite sure why it happens, though Rich claimed
>     that it seems to be a problem related to compiler.
> 
> 
> The workaround I suggested solves the performance regression. But even if it
> hadn't, this is a security fix that should be merged regardless of the
> performance impact.

Good point. Ilya, would you reword the commit log and resend based on
latest code?

	--yliu