Rongsong Shen
d26ff8870d
The buglog was one 27K-line JSON file whose fields covered only symptom,
root cause and fix, as free text: 2% of entries named the code version a
bug was found on, 12% the build profile, 36% a way to reproduce, and 58% of
the file was OpenWolf hook auto-detections ("Missing guard clause",
"Function not marked async" on .md files).
- .claude/skills/buglog/bug-record.md: the record standard. Eight
sections (Summary as the title, Description, Environment, Reproduction;
Root cause, Fix, Verification, References once fixed), each with the
content it must contain -- e.g. Environment needs the OS, the libc the
failing binary loads (from its ELF interpreter: glibc 2.42 in the nix
shell vs 2.40 on the host), toolchain, build profile and commit.
- .wolf/bugs/<id>.md: 500 records migrated from buglog.json; every field
verified to round-trip. They carry legacy: true and an explicit "not
recorded" where the old log had no such field; component derived from
file paths, severity from keywords (else unknown), fix_commits from
hashes in status_note/fix that git resolves (91 of 463 fixed).
- .wolf/buglog-archive.json: the 710 hook auto-detections, verbatim.
- .wolf/buglog.json is now an index generated from the records, keeping
the fields OpenWolf's hooks and `openwolf bug search` read.
- scripts/buglog.py rewritten: new (template + Environment collected from
the machine and --binary), check, status (refuses a status the record
doesn't support; fixed needs Root cause, Fix, Verification and
--commit hashes git resolves), note, recur, set, show, list, triage,
env, index. 29 unittest cases in scripts/tests/test_buglog.py.
- scripts/git-hooks/pre-commit runs `check --staged`: incomplete staged
records, a legacy record hand-changed to fixed without the fix-time
sections, a new record claiming legacy: true, or a stale index refuse
the commit.
- scripts/gitea-sync.py reads the records: issue body = the record's
sections plus linked fix commits (origin remote, GITEA_COMMIT_REPO to
override), and a body hash so an issue's text is refreshed when the
record changes.
- bug-1866 rewritten to the full standard as the worked example.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
38 lines
2 KiB
Markdown
38 lines
2 KiB
Markdown
---
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id: "bug-1281"
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status: "fixed"
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status_updated: "2026-09-24"
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status_note: ""
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component: "unknown"
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severity: "crash"
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timestamp: "2026-06-30T03:25:00Z"
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last_seen: "2026-09-19T09:00:00Z"
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occurrences: 3
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files: ["src/controller (restart/recovery/election path — exact site unknown", "no backtrace)"]
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tags: ["7.2", "iomgr", "gdb", "election", "crash", "5.4", "restart", "recovery", "heisenbug", "accept-hang", "restart-stability", "segfault", "chaotic-soak"]
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related: ["bug-1272", "bug-1282", "bug-924"]
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legacy: true
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---
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# bug-1281: Restart-stability bug: a restarted xce_controller becomes unable to participate at chaotic round…
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## Description
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Restart-stability bug: a restarted xce_controller becomes unable to participate at chaotic round 4. Release build SIGSEGVs ('Segmentation fault (core dumped) --myname ctrl-3'); under gdb the SAME corruption manifests as a WEDGED inbound-accept/iomgr path (last accept 03:42:03 while the election timer keeps firing) so two restarted survivors can't exchange PreVotes -> permanent round-N election stall.
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## Environment
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_Not recorded (migrated from buglog.json)._
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## Reproduction
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_Not recorded (migrated from buglog.json)._
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## Root cause
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ROOT-CAUSED via gdb SIGQUIT all-thread bt: an ABBA lock-order deadlock in src/lib async dispatch. io_worker (netio.c:672) holds ep->lock then blocks on q->lock (dataq_enq); vdispatcher dataq_deq (dataq.c:65) holds q->lock then blocks on ep->lock via the vtask_eligible->endpoint_is_task_blocked (netio.c:1001) match callback. io_worker dies -> node stops accepting/answering PreVotes -> round-4 stall. In release the same ep/q race corrupts -> SIGSEGV. See bug-1282 (the actual dispatch defect).
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## Fix
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The crash/hang IS bug-1282 (UPSTREAM raft-drive-async dispatch deadlock). raft-ha-core-safety 7.2 stays blocked until bug-1282 is fixed upstream, then re-run the gate. No raft-ha-core-safety code change.
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## Verification
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_Not recorded (migrated from buglog.json)._
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## References
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- Related: bug-1272, bug-1282, bug-924
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