Segfault in smbd: messaging_dgm_fde_active

[Andrew Bartlett]

On Tue, 2018-06-26 at 11:15 +0200, Ralph Böhme wrote:
> On Tue, Jun 26, 2018 at 05:51:40PM +1200, Andrew Bartlett wrote:
> > On Tue, 2018-06-26 at 08:14 +1200, Andrew Bartlett wrote:
> > > On Mon, 2018-06-25 at 22:09 +0200, Ralph Böhme wrote:
> > > > Hi Andrew,
> > > > 
> > > > On Mon, Jun 25, 2018 at 05:07:36PM +1200, Andrew Bartlett via samba-technical wrote:
> > > > > Can someone look into this for me please?
> > > > 
> > > > I'm looking into it as time permits. Couldn't make sense out of it yet.
> > > 
> > > Thanks.  I'll try a bisect at work today.
> > 
> > Using the libsmbclient test form master in run in a testenv under
> > bisect I've got down to:
> > 
> > abartlet at ruth:/data/samba/git/samba9$ git bisect bad
> > b88f9384b01d91e6060cd806e03fe9c90cbdbcf1 is the first bad commit
> > commit b88f9384b01d91e6060cd806e03fe9c90cbdbcf1
> > Author: Stefan Metzmacher <metze at samba.org>
> > Date:   Sat Jun 17 01:06:46 2017 +0200
> > 
> >     s4:auth/ntlmssp: add support for using "winbind" as DC
> >     
> >     This adds support for trusted domains to the auth stack on AD DCs.
> >     
> >     Signed-off-by: Stefan Metzmacher <metze at samba.org>
> >     Reviewed-by: Andreas Schneider <asn at samba.org>
> 
> yesterday I tested whether commit 12a99eb4f2b0a52d3bbdf093ff3a2f0f6c2d2244 from
> 
> https://git.samba.org/?p=metze/samba/wip.git;a=shortlog;h=refs/heads/master4-impersonate
> 
> would fix the issue, but it didn't. Maybe you want to give it a whirl as well? I
> was in a bit of a hurry, so maybe I screwed up something.

Sure, I'll give it a look when I get to the office!  After a pile of
tries and then 10 bisects I finally got the test procedure down pat,
but it took some patience. 

Andrew Bartlett

-- 
Andrew Bartlett                       http://samba.org/~abartlet/
Authentication Developer, Samba Team  http://samba.org
Samba Developer, Catalyst IT          http://catalyst.net.nz/services/samba