[Bug]: [macOS 27 / Apple Silicon] Herd PHP-FPM crashes on every outbound DNS/HTTP request: SIGABRT “multi-threaded process forked” causes 502 across all PHP versions

[edgardluz]

Platform

macOS

Operating system version

macOS 27.0 (26A5388g), Apple Silicon

System architecture

ARM64 (M1, M2, etc)

Herd Version

Herd 1.29.0 (65)

PHP Version

PHP versions 8.3, 8.4, and 8.5

Bug description

The stack excerpt above

php85-fpm-2026-07-28-100551.0004.txt

Steps to reproduce

direct Herd FPM returns 502; php artisan serve works

Relevant log output