Pairs with Blockers #4 in plans/fed-sx-milestone-2.md. The
http-listen handler holds the SX runtime mutex; any gen_server:call
from inside a route deadlocks because the gen_server reply
scheduler needs the runtime the caller is sitting on. m2's Step 12
two-instance smoke test gates on this.
Briefing pre-loads the fix-loop agent with:
- Verified reproducer (deterministic curl-hang against
http_server:start(P, [{kernel, nx_kernel}]))
- Two fix-pattern candidates (release mutex around sx_call vs
spawn handler in fresh er-process)
- Acceptance criteria: http_server_tcp.sh 5/5 + a NEW kernel-
aware request passes without hanging
- Scope guardrails: only hosts/ocaml/bin/sx_server.ml +
adjacent lib/sx_runtime.ml; m2's next/** and lib/erlang/** are
OFF LIMITS
Worktree at /root/rose-ash-loops/fed-prims, branch loops/fed-prims
already exists (Phases A-J landed). This is a follow-up fix loop,
not a continuation of the original phase plan.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
giles
136deb1daf