docs(buglog): log P0 defects from the 2026-10-10 review (bug-1936..bug-1952)

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

2026-10-10 08:15:28 +00:00

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bug-1939: xce_scheduler dispatches jobs to hosts closed by an admin

Description

Observed: (source reading, .kiro/reviews/project-gap-review-2026-10-10.md (P0); to be confirmed by a failing test before the fix) Host close sets XCE_WORKER_CLOSED|XCE_WORKER_CLOSED_BY_ADMIN (src/controller/worker.c:1015-1024), but no scheduler code checks either bit (only unavailable/reconciling hosts are skipped: core_session.c:136, resource.c:704,887); the parallel allocator's bad-host check is empty (plugins/parjob_allocator.c:40-48).

Expected: A closed host gets no new jobs; running jobs are unaffected. Impact: Admin host control silently ignored: closing a host for maintenance does not stop new jobs landing on it. Found by: review: .kiro/reviews/project-gap-review-2026-10-10.md (P0)

Environment

OS: no /etc/os-release; Docker container; NixOS kernel; kernel Linux 6.18.33 x86_64
libc: glibc 2.42-47 (interpreter /nix/store/wb6rhpznjfczwlwx23zmdrrw74bayxw4-glibc-2.42-47/lib/ld-linux-x86-64.so.2)
Toolchain: gcc (GCC) 15.2.0, meson 1.9.1
Build: asan (xce.build)
Code: scheduler-framework @ 94472ee3-dirty
Deployment: any (found by source reading; the failing test that confirms it is named in Verification)

Reproduction

Close a host (xcecli hosts close <h>), submit jobs that fit it.
Jobs are dispatched to the closed host.

Frequency: deterministic (by code reading; confirmed by the RED test of the fix)
Evidence: the code sites quoted in Description; no logs kept.

Root cause

TODO: required for fixed/partial

Fix