Bind 9.11.13 - inline re-signing stops

[Ondřej Surý]

Hi Matthew,

we’ll write some generic instruction on how to get a coredump from a running named
(without crashing it) - generally you want to use gcore[1].

Then here you can continue as if the named has crashed and get us a thread stack trace[2].

As we need to access very specific data structure, please add the information to the issue
you have opened, and we’ll pick it up from there.  You can also share the coredump and the
binaries with us using pandora.isc.org service, but please be aware that the memory dump
can (and probably will) contain the DNSSEC signing private keys.

Ondrej

1. https://www.systutorials.com/docs/linux/man/1-gcore/
2. https://kb.isc.org/docs/aa-00340

Ondrej
--
Ondřej Surý
ondrej at isc.org

> On 19 Feb 2020, at 08:36, Matthew Richardson <matthew-l at itconsult.co.uk> wrote:
> 
> Dear Ondrej,
> 
> I would be delighted to assist with a core dump.
> 
> However, not being a developer myself (I did do an amount of assembler work
> in my youth, but that was long ago now!), I therefore do not know how to
> get you "a coredump using gdb and tar it with associated binary and
> libraries".
> 
> Do you have any step by step instructions for a novice to achieve this?
> The machine is running Centos 7, and Bind is built using rpmbuild from the
> source rpm provided by ISC.
> 
> With many thanks.
> 
> Best wishes,
> Matthew
> ------
>> From: Ond?ej Surý <ondrej at isc.org>
>> To: Matthew Richardson <matthew-l at itconsult.co.uk>
>> Cc: bind-users at lists.isc.org
>> Date: Wed, 19 Feb 2020 07:16:49 +0100
>> Subject: Re: Bind 9.11.13 - inline re-signing stops
> 
>> Matthew,
>> 
>> thank you for the report. Indeed, we have received some more reports about this particular issue and we are currently investigating it.
>> 
>> We would appreciate if anybody who encounters the problem could dump the core first before restarting the named, so we have more evidence to analyze.
>> 
>> Ondrej
> 
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