Re: 9.16.19 repeated crashes on FreeBSD 12.2-p6

2021-08-13 Thread Andreas S. Kerber 
Am Thu, Aug 12, 2021 at 05:03:33PM -0700 schrieb Randy Bush:
> FreeBSD 12.2-RELEASE-p6 GENERIC on amd64
> bind 9.16.19 from binary ports
> 
> ok, i was quietly waiting for a fix to magically appear and is hasn't.

I got lot's of crashes after upgrading from 9.16.18 to 9.16.19 too.
In my case it happened on Linux instead of FreeBSD though.
After reporting an issue (#2841) at gitlab.isc.org it turned out that there is a
already known problem which ought to be adressed in the August release. The
issue is marked as confidential though.

Just guessing, but maybe this will fix the crashes you are seeing as well.
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Re: 9.16.19 repeated crashes on FreeBSD 12.2-p6

2021-08-13 Thread Mark Andrews 



> On 13 Aug 2021, at 15:12, Randy Bush  wrote:
> 
>> Presumably you are running with `named -u`
> 
># grep named /etc/rc.conf
>named_enable=YES
>named_program=/usr/local/sbin/named
>named_conf=/usr/home/dns/named.conf
>named_chrootdir=""
>named_chroot_autoupdate=NO
>named_uid=bind
>named_gid=bind
>named_wait=YES
>named_auto_forward=YES
>named_flags="-u bind"
>named_auto_forward_only=NO
> 
> named crashed
> 
># find / -name *.core
>#
> 
> what am i misunderstanding?

Named calls set{re}uid(2), when running with `named -u`, which DISABLES core
dumps of the process unless the kernel has been told otherwise.  This has
to be done by the ADMINISTRATOR as it is a SYSTEM WIDE configuration knob.
There is no per process knob.

See the afore mentioned KB articles for how to do this.

> randy

-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742  INTERNET: ma...@isc.org

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