myxce/.wolf
Rongsong Shen ca4db13a79
fix(controller): string resvals own their bytes -- rejoin use-after-free killed new primary (bug-1851)
update_val_res() memcpy'd the xce_val_t into w->host.resvals, so the
"type"/"model" string resources aliased the interned xstrings owned by
w->host.attrs. rejoin_worker() drops the old attrs strings, then
apply_join_state() -> resync_arm_round() resolves the previous join's
still-outstanding round, firing the worker hooks before
add_hostattrs_resvals() re-seeds resvals; the apiserver hook's
collect_resval() strdup()ed the freed hostmodel. Live: a newly promoted
primary died ~8s after election during an HA soak.

A string resval now stores a private strdup (taken before the old copy is
freed), and the owning arrays free their entries: host.resvals gets
kill_resval (replacing the FIXME NULL killer) and c->sharedinst's
resval_obj_killer (previously a no-op) frees the string and the value --
both also leaked every xce_val_t before. Also closes the same alias for
worker-reported string resvals and config values.

Regression test: test_rejoin_worker_string_resvals_survive_outstanding_round
(RED reproduced the live ASAN stack; GREEN after). meson test 109/109.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
2026-09-24 08:41:55 +00:00
..
hooks chore(wolf): checkpoint buglog.json (1062 bugs) 2026-08-27 08:27:43 +00:00
.gitignore chore(wolf): checkpoint buglog.json (1062 bugs) 2026-08-27 08:27:43 +00:00
_scan-state.json Merge branch 'better_xce_build' into scheduler-framework 2026-09-08 03:09:53 +00:00
anatomy-index.json chore: persist OpenWolf state, controller-peers-env-fallback spec, and scheduler backlog notes 2026-09-23 03:19:52 +00:00
anatomy.md chore: persist OpenWolf state, controller-peers-env-fallback spec, and scheduler backlog notes 2026-09-23 03:19:52 +00:00
buglog.json fix(controller): string resvals own their bytes -- rejoin use-after-free killed new primary (bug-1851) 2026-09-24 08:41:55 +00:00
cerebrum.md fix(scheduler): 3 --sim-verify false positives + snapshot resreq_fp gap (bug-1844/1845/1772) 2026-09-23 13:40:16 +00:00
config.json docs: save scheduler-snapshot-job-allocation and xce-test-cli-ux spec docs, sync OpenWolf state 2026-08-28 06:30:37 +00:00
cron-manifest.json chore: checkpoint all prior work for clean state 2026-06-04 13:04:16 +00:00
cron-state.json chore(build): make xce-build.sh self-wrap into nix develop 2026-09-07 15:31:06 +00:00
memory.md save wolf status 2026-09-23 14:45:38 +08:00
OPENWOLF.md chore(wolf): checkpoint buglog.json (1062 bugs) 2026-08-27 08:27:43 +00:00
reframe-frameworks.md chore: checkpoint all prior work for clean state 2026-06-04 13:04:16 +00:00
STATUS.md chore(wolf): regenerate handoff, sync anatomy/memory bookkeeping 2026-09-13 09:43:21 +00:00