Bug in bind 9.7.3?

[Andris Kalnozols]

> I using bind 9.7.3 as resolver in a slightly larger server farm with
> some mail servers that use domain key validation.
> If a try
> 
> # host -t TXT _adsp._domainkey.federalreserve.gov
> 
> bind dies with
> 
> May 26 19:59:02 resolv04 named[8237]: buffer.c:285: REQUIRE(b->used + 1
> <= b->length) failed
> May 26 19:59:02 resolv04 named[8237]: exiting (due to assertion failure)
> 
> This is reproducible and should only affected in 9.7.3. Can this be
> possible?

Also fails using 9.8.1b1:

May 26 12:25:33 lpans2 named[2425]: dnssec: info:   validating @0x2a0f740: federalreserve.gov SOA: no valid signature found
May 26 12:25:33 lpans2 named[2425]: dnssec: info:   validating @0x7f087808a0d0: 9811cuitspl6a9216q7e07en9sejpgst.federalreserve.gov NSEC3: no valid signature found
May 26 12:25:33 lpans2 named[2425]: dnssec: info:   validating @0x7f087808a0d0: m2n0plcd7rkj15ehs9s21ufd2bppkhcp.federalreserve.gov NSEC3: no valid signature found
May 26 12:25:33 lpans2 named[2425]: dnssec: info:   validating @0x7f087808a0d0: k3i91guqugukqor9ui8f0u5hvk0ijo84.federalreserve.gov NSEC3: no valid signature found
May 26 12:25:33 lpans2 named[2425]: general: critical: buffer.c:285: REQUIRE(b->used + 1 <= b->length) failed, back trace
May 26 12:25:33 lpans2 named[2425]: general: critical: #0 0x41649b in assertion_failed()+0x4b
May 26 12:25:33 lpans2 named[2425]: general: critical: #1 0x5ab8ea in isc_assertion_failed()+0xa
May 26 12:25:33 lpans2 named[2425]: general: critical: #2 0x5ad159 in isc__buffer_putuint8()+0x59
May 26 12:25:33 lpans2 named[2425]: general: critical: #3 0x4ad48f in dns_ncache_addoptout()+0x20f
May 26 12:25:33 lpans2 named[2425]: general: critical: #4 0x52b168 in validated()+0x688
May 26 12:25:33 lpans2 named[2425]: general: critical: #5 0x5ccac8 in run()+0x1c8
May 26 12:25:33 lpans2 named[2425]: general: critical: #6 0x7f088bfdc8ba in _fini()+0x7f088b9f92f2
May 26 12:25:33 lpans2 named[2425]: general: critical: #7 0x7f088b9f402d in _fini()+0x7f088b410a65
May 26 12:25:33 lpans2 named[2425]: general: critical: exiting (due to assertion failure)

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Andris