[PATCH v3 0/2] vhost fixes for OVS SIGSEGV in PMD

[Stephen Hemminger]

On Tue,  2 Aug 2022 02:49:36 +0200
Claudio Fontana <cfontana at suse.de> wrote:

> This is an alternative, more general fix compared with PATCH v1,
> and fixes style issues in v2.
> 
> The series fixes a segmentation fault in the OVS PMD thread when
> resynchronizing with QEMU after the guest application has been killed
> with SIGKILL (patch 1/2),
> 
> The segmentation fault can be caused by the guest DPDK application,
> which is able this way to crash the OVS process on the host,
> see the backtrace in patch 1/2.
> 
> Patch 2/2 is an additional improvement in the current error handling.

Checking for NULL and 0 is good on host side.
But guest should probably not be sending such a useless request?