9.16.19 repeated crashes on FreeBSD 12.2-p6

Mark Andrews marka at isc.org
Fri Aug 13 00:41:14 UTC 2021

> On 13 Aug 2021, at 10:03, Randy Bush <randy at psg.com> wrote:
> 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 am getting 10-20 crashes a day on each of two servers.  it is not
> leaving disk flowers; and i see no config option to encourage it to do
> so.

Presumably you are running with `named -u` so tell the kernel to allow
core dumps for suid binaries [1] or allow an ordinary user to bind to
reserved ports [2] and start named as the ordinary user rather than using
'named -u’.  Use chroot rather su if you are using `named -t`.

	su -u user named …

	chroot -u user <newroot> named … 

[1] https://kb.isc.org/docs/aa-00340
[2] https://kb.isc.org/docs/aa-00621


> randy
> ---
> randy at psg.com
> `gpg --locate-external-keys --auto-key-locate wkd randy at psg.com`
> signatures are back, thanks to dmarc header butchery
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Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742              INTERNET: marka at isc.org

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