named crashes on assertion in rbtdb.c o? sparc64/SMP

[Marius Strobl]

On Mon, Jun 27, 2011 at 07:19:33PM +0400, KOT MATPOCKuH wrote:
> Hello!
> 
> I'm got a problem with named on FreeBSD-CURRENT/sparc64.
> Up to 5 times a day it crashes with these messages:
> 27-Jun-2011 03:42:14.384 general:
> /usr/src/lib/bind/dns/../../../contrib/bind9/lib/dns/rbtdb.c:1614:
> REQUIRE(prev > 0) failed
> 27-Jun-2011 03:42:14.385 general: exiting (due to assertion failure)
> 
> The problem is still in latest system's bind:
> # named -v
> BIND 9.6.-ESV-R4-P1
> 
> This problem exists only on SMP sparc64 system. On my another sparc64,
> with 1 processor, I does not have this problem.
> 
> I found a some similar problems on alpha and IA64, which was related
> to problems with isc_atomic_xadd() function in include/isc/atomic.h.
> But I don't understand that there may be incorrect for sparc64 and
> this function was not changed for a minimum 4 years...
> 
> How can I help solve this problem?
> 

Uhm, we once fixed a problem in the MD atomic implementation which
still seems to present in the ISC copy. Could you please test whether
the following patch makes a difference?
http://people.freebsd.org/~marius/sparc64_isc_atomic.h.diff

Marius