Segfault in smbd: messaging_dgm_fde_active

Stefan Metzmacher metze at
Tue Jun 26 19:22:23 UTC 2018

Am 26.06.2018 um 21:01 schrieb Andrew Bartlett via samba-technical:
> 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>
>>> 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>
>>>     Reviewed-by: Andreas Schneider <asn at>
>> yesterday I tested whether commit 12a99eb4f2b0a52d3bbdf093ff3a2f0f6c2d2244 from
>> 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. 

Thanks! Please also provide the valgrind output using --num-callers=128
we need the backtraces down to main() for all 3 backtraces.

And send possible attachements as text/plain, so
that shows them


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