[Samba] ctdb error after upgrade to 4.12.10

[Jeremy Allison]

On Tue, Nov 10, 2020 at 07:41:56AM +1300, Andrew Bartlett wrote:
> On Mon, 2020-11-09 at 08:55 -0800, Jeremy Allison via samba wrote:
> > On Mon, Nov 09, 2020 at 04:01:47PM +0100, Benedikt Kaleß via samba
> > wrote:
> > > Dear List,
> > > 
> > > I updated to samba 4.12.10-SerNet-Debian-9.buster from 4.12.9
> > > and did a
> > > 
> > > gluster volume set volume performance.write-behind off
> > > 
> > > Now I get this in /var/log/syslog and randomly people don't get
> > > access
> > > to a shae.
> > 
> > Can you load the debug symbols please ? That should give us
> > more data on where this is failing.
> > 
> > Thanks !
> > 
> > Jeremy.
> 
> Jeremy,
> 
> To lock this down properly we might need to put (#include) the vfs
> module into a cmocka test, mocking the various gluster calls so we
> cover these codepaths.

I'm just worried my talloc tidyups might be at fault,
but I honestly can't see where.

Once we get a backtrace (and if it's not my fault :-)
I'm going to be happy to throw this over to Guenther,
Sachin and Anoop for test coverage :-).