Re: [Qemu-devel] [PATCH] hmp: fix "dump-quest-memory" segfault (ppc)

["Dr. David Alan Gilbert" <dgilbert@redhat.com>]

* Daniel P. Berrange (berrange@redhat.com) wrote:
> On Mon, Sep 11, 2017 at 01:41:58PM +0200, Cornelia Huck wrote:
> > On Mon, 11 Sep 2017 12:06:15 +0100
> > "Daniel P. Berrange" <berrange@redhat.com> wrote:
> > 
> > > On Mon, Sep 11, 2017 at 01:00:37PM +0200, Laurent Vivier wrote:
> > > > Commit fd5d23babf (hmp: fix "dump-quest-memory" segfault)
> > > > fixes the problem for i386, do the same for ppc.  
> > > 
> > > What about all the other targets QEMU supports ?  Have you checked if they
> > > are similarly affected, as we don't want to wait another 6 months to get a
> > > bug report that s390 or aarch64 crash in exactly the same way too.
> > 
> > This patch actually prompted me to check s390, and the mentioned
> > command line works fine.
> > 
> > However, if we start a qemu with no guest memory defined and then call
> > dump-guest-memory without filtering, we get a core dump instead of a
> > guest dump (s390x or x86_64, machine none).
> > 
> > I can take a stab at fixing that, unless someone beats me to it.
> 
> I wonder if someone wants to write a qtest job to run dump-guest-memory
> across all machine types, on all targets. Seems we have enough crashiness
> in this code to make it worthwhile to test

We do have - that's how we found this case;  it's part of test-hmp.

Dave

> Regards,
> Daniel
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Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK