Re: bin/57476: dhcpd dumps core

[Robert Elz <kre%munnari.OZ.AU@localhost>]

The following reply was made to PR bin/57476; it has been noted by GNATS.

From: Robert Elz <kre%munnari.OZ.AU@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: 
Subject: Re: bin/57476: dhcpd dumps core
Date: Wed, 21 Jun 2023 13:26:29 +0700

     Date:        Wed, 21 Jun 2023 06:00:02 +0000 (UTC)
     From:        Martin Husemann <martin%duskware.de@localhost>
     Message-ID:  <20230621060003.0E2BF1A9241%mollari.NetBSD.org@localhost>
 
   |  The code seems to iterate over that in a few places and never checks for
   |  car == NULL anywhere. I'll instrument the option_*_reference call that
   |  sets car to != NULL and see if I can catch the caller that does this.
 
 I took a bit more of a look after I sent the message.   Given that you
 said "sometimes" I'm suspecting a thread related race condition (somewhere).
 I didn't see anywhere things are set up (or torn down) incorrectly,
 but that doesn't mean a lot.
 
 kre