Three fixes found running the drills: the splat regex no longer matches
the benign "RCU lockdep checking is enabled" boot banner; the 40 V
regulator search reaches its reg-fixed-voltage driver (regulators:40v)
so the forced-defer drill resolves the resource instead of skipping;
and require_idle waits out the run-through-'running' a forgectrl restart
passes through instead of refusing.
kas/forgefirm-glowforge-debug.yml builds one dev image on the debug
kernel (FORGEFIRM_KERNEL_DEBUG=1, tagged dev-debug) beside the closing
release and dev images; the debug options never touch either.
scripts/bench/debug_kernel_drills.py runs the two drills (three
load/unload cycles under DEBUG_MUTEXES, a forced -EPROBE_DEFER unwind),
each read against dmesg for lock splats, refusing on a non-debug kernel
or a non-idle machine; it is registered as a board bench tool. BRINGUP
item 3 names the mechanism and stays remaining work (run it on the
closing burn); the site's Build page documents the variant.
ScottW514