rbtdb assertion and segfault

[JINMEI Tatuya / 神明達哉]

At Mon, 14 Jul 2008 01:08:51 -0700,
Bob McElrath <bob_bind at mcelrath.org> wrote:

> With bind 9.4.2, I am seeing a regular assertion and segfault:
>     Jul 13 22:26:00 moya named[27422]: rbtdb.c:1174: REQUIRE(prev > 0) failed
>     Jul 13 22:26:00 moya named[27422]: exiting (due to assertion failure)
> 
> This is on debian, the package version is 9.4.2-10, on a DEC/Compaq alphaserver.
> Bind runs for around 24 hours properly before it crashes.  The crash leaves a
> core, so here is the backtrace:
> 
> #0  0x0000020000544c78 in raise () from /lib/libc.so.6.1
> #1  0x0000020000546574 in abort () from /lib/libc.so.6.1
> #2  0x0000000120020fc0 in ?? ()
> #3  0x00000200000dab44 in dns_rbt_create () from /usr/lib/libdns.so.32
> #4  0x00000200000e3e14 in dns_rbtdb_create () from /usr/lib/libdns.so.32
> #5  0x0000020000095318 in dns_db_detachnode () from /usr/lib/libdns.so.32
> #6  0x0000020000143058 in dns_resolver_shutdown () from /usr/lib/libdns.so.32
> #7  0x0000020000147c74 in dns_resolver_prime () from /usr/lib/libdns.so.32
> #8  0x000002000047363c in isc_taskmgr_create () from /usr/lib/libisc.so.32
> #9  0x00000200004dfefc in start_thread () from /lib/libpthread.so.0
> #10 0x00000200005f4734 in clone () from /lib/libc.so.6.1
> 
> Any suggestions on how to fix this?  My DNS setup is exceedingly simple, just a
> couple domains (one of which is my email address if you want to interrogate
> bind).

This backtrace doesn't make sense (the call sequence doesn't match the
actual code, etc).  Are you sure you have the right pair of named
binary and core?

---
JINMEI, Tatuya
Internet Systems Consortium, Inc.