BIND from brew on OSX - Crash

[stuart at registry.godaddy]

Hi,

This is mostly just me wondering if this is just a "me" issue or whether this is endemic of BIND on OSX.

I use BIND as distributed by brew.sh on OSX (14.7.6, M2 Pro) for local testing of various things and ran into an issue last week. When I configured BIND to listen on an alternate port (1053 or 2053 or ..., you get the idea), after a few queries, it would cause a panic and thus a reboot of my computer.

This is using the 9.20.11_1 release from brew.

Simple configuration below.

Starting in the foreground with this:

  /opt/homebrew/opt/bind/sbin/named -f -g -c /Users/sbrowne/tmp/ihelp-3115/primary/named.conf

I can issue a single dig, but a second panics the system and reboots:

  dig -p 1053 @127.0.0.1 soa example.com.

If I leave it on port 53 (started under sudo) it doesn't crash, but my intention is to have multiple instances running (on different ports) to test various replication things.

The first line of the OSX crash report is:

panic(cpu 8 caller 0xfffffe0025883038): Mutex 0xfffffe24cc3f1c00 is unexpectedly owned by thread 0xfffffe1ffd3c4fd0 @lock_mtx.c:175

The rest can be provided if it is believed to be of interest.

Stuart

--- named.conf --
options {
  directory "/Users/sbrowne/tmp/ihelp-3115/primary";
  listen-on port 1053 { localhost; };
  listen-on-v6 { none; };
  server-id "primary";
};

view primary {
  allow-new-zones true;
  zone "example.com" {
    file "example.com";
    type primary;
  };
};
--- END named.conf ---

--- named -V output ---
BIND 9.20.11 (Stable Release) <id:c6b2e31>
running on Darwin arm64 23.6.0 Darwin Kernel Version 23.6.0: Thu Apr 24 20:29:29 PDT 2025; root:xnu-10063.141.1.705.2~1/RELEASE_ARM64_T6020
built by make with  '--prefix=/opt/homebrew/Cellar/bind/9.20.11_1' '--sysconfdir=/opt/homebrew/etc/bind' '--localstatedir=/opt/homebrew/var' '--with-json-c' '--with-libidn2=/opt/homebrew/opt/libidn2' '--with-openssl=/opt/homebrew/opt/openssl at 3' '--without-lmdb' 'CC=clang' 'CFLAGS=-DLIBXML_HAS_DEPRECATED_MEMORY_ALLOCATION_FUNCTIONS' 'PKG_CONFIG_PATH=/opt/homebrew/opt/pkgconf/lib/pkgconfig:/opt/homebrew/opt/jemalloc/lib/pkgconfig:/opt/homebrew/opt/json-c/lib/pkgconfig:/opt/homebrew/opt/libidn2/lib/pkgconfig:/opt/homebrew/opt/libnghttp2/lib/pkgconfig:/opt/homebrew/opt/libuv/lib/pkgconfig:/opt/homebrew/opt/openssl at 3/lib/pkgconfig:/opt/homebrew/opt/readline/lib/pkgconfig:/opt/homebrew/opt/userspace-rcu/lib/pkgconfig' 'PKG_CONFIG_LIBDIR=/usr/lib/pkgconfig:/opt/homebrew/Library/Homebrew/os/mac/pkgconfig/14'
compiled by CLANG Apple LLVM 16.0.0 (clang-1600.0.26.6)
compiled with OpenSSL version: OpenSSL 3.5.1 1 Jul 2025
linked to OpenSSL version: OpenSSL 3.5.1 1 Jul 2025
compiled with libuv version: 1.51.0
linked to libuv version: 1.51.0
compiled with liburcu version: 0.15.3
compiled with jemalloc version: 5.3.0
compiled with libnghttp2 version: 1.66.0
linked to libnghttp2 version: 1.66.0
compiled with libxml2 version: 2.9.13
linked to libxml2 version: 20913
compiled with json-c version: 0.18
linked to json-c version: 0.18
compiled with zlib version: 1.2.12
linked to zlib version: 1.2.12
threads support is enabled
DNSSEC algorithms: RSASHA1 NSEC3RSASHA1 RSASHA256 RSASHA512 ECDSAP256SHA256 ECDSAP384SHA384 ED25519 ED448
DS algorithms: SHA-1 SHA-256 SHA-384
HMAC algorithms: HMAC-MD5 HMAC-SHA1 HMAC-SHA224 HMAC-SHA256 HMAC-SHA384 HMAC-SHA512
TKEY mode 2 support (Diffie-Hellman): no
TKEY mode 3 support (GSS-API): yes

default paths:
  named configuration:  /opt/homebrew/etc/bind/named.conf
  rndc configuration:   /opt/homebrew/etc/bind/rndc.conf
  nsupdate session key: /opt/homebrew/var/run/named/session.key
  named PID file:       /opt/homebrew/var/run/named/named.pid
--- END named -V output ---