[Samba] Crash on "samba-tool domain functionalprep --function-level=2012_R2 ..."

Fabio Fantoni fabio.fantoni at m2r.biz
Wed Jul 26 13:53:58 UTC 2023

Il 03/02/2023 03:27, Andrew Bartlett ha scritto:
> On Fri, 2023-02-03 at 09:53 +1300, Douglas Bagnall via samba wrote:
>> On 3/02/23 03:15, Fabio Fantoni via samba wrote:
>>> When I this command I had a crash:
>>> samba-tool domain functionalprep --function-level=2012_R2 --forest-prep
>>> --domain-prep
>> If you try with `samba-tool -d9` you'll get more output, which may or
>> may not help. And if you add
>>      panic action = /path/to/samba/gdb_backtrace %d
>> to smb.conf, you ought to see more profuse back traces (what the exact
>> path or package is, I don't know).
> This is more for a running server, for a command-line tool use 'gdb --args /usr/bin/python3 /path/to/samba-tool ...' and then start it with 'r' for 'run'.
Thanks for replies and sorry for my late reply.

I retried only today on domain controller now with debian 12, samba 
2:4.17.9+dfsg-0+deb12u3 and libgnutls30 3.7.9-2

was still crashed so I executed:

gdb --args /usr/bin/python3 /usr/bin/samba-tool domain functionalprep 
--function-level=2012_R2 --forest-prep --domain-prep

I saved the core dump and after decoded the backtrace with debuginfod, 
here the full output:


if you need more info tell me

thanks for any reply and sorry for my bad english
>> I think the 'ndr_pull_relative_ptr1' lines are unrelated, just Samba
>> trying to parse SD strings as binary before trying it the other way
>> (c.f.
>> https://lists.samba.org/archive/samba/2021-July/236839.html
>> <https://lists.samba.org/archive/samba/2021-July/236839.html>
>> ).
>> What version of libgnutls to you have? libgenrand-samba4.so.0 should
>> always lead to gnutls, as fas as I am aware.
>> Douglas
> -- 
> Andrew Bartlett (he/him) https://samba.org/~abartlet/
> Samba Team Member (since 2001) https://samba.org
> Samba Team Lead, Catalyst IT https://catalyst.net.nz/services/samba
> Proudly developing Samba for Catalyst.Net Ltd - a Catalyst IT group 
> company
> Samba Development and Support: https://catalyst.net.nz/services/samba
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