myxce/.wolf/bugs/bug-1794.md
Rongsong Shen d26ff8870d
feat(buglog): one Markdown record per bug, checked against a record standard
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>
2026-09-28 03:40:11 +00:00

2.8 KiB

id status status_updated status_note component severity timestamp last_seen occurrences files tags related legacy
bug-1794 fixed 2026-09-24 controller crash 2026-09-09T19:03:51Z 2026-09-19T09:00:00Z 1
src/controller/testsuite/test.c (cmd_jobrun
fill_job_alloc
jobrun_call_t/jobrun_thunk)
controller
testsuite
xce_test
cmd_jobrun
fill_job_alloc
uninitialized-memory
heap-allocation
asan
interruptcall
xce-test-cli-ux
task-3.2
bug-1791
true

bug-1794: xce_test cmd_jobrun crashes (ASAN allocation-size-too-big abort in alloc_packet, requested size…

Description

xce_test cmd_jobrun crashes (ASAN allocation-size-too-big abort in alloc_packet, requested size ~0xffffffffc3c3c4b0) when run live against a real controller, after xce-test-cli-ux task 3.2 wrapped its xcecli_jobdispatch() call through the interruptible-call adapter (heap-allocated ctx block instead of a stack-local xce_job_alloc_t).

Environment

Not recorded (migrated from buglog.json).

Reproduction

Not recorded (migrated from buglog.json).

Root cause

PRE-EXISTING, latent: fill_job_alloc() (test.c) only ever sets xce_job_alloc_t.nhosts/.allocs -- it never initializes the struct's other two fields, nres_shared and allocs_shared (xce/types.h). Before task 3.2, xce_job_alloc_t jalloc was a plain stack-local in cmd_jobrun, so those two never-set fields held whatever incidental value that stack frame happened to have -- harmless in practice, apparently usually small/zero. Task 3.2 moved this struct into a heap-allocated jobrun_call_t block (required by the interruptible-call adapter's contract: fn must only touch heap-owned memory, never the caller's stack, since an abandoned call's worker thread can outlive the caller's own stack frame) allocated via plain malloc(), which leaves ALL bytes as genuine heap garbage -- confirmed live (real single-node deploy, jobrun -j -m worker-1:1): the garbage nres_shared/allocs_shared corrupted xce_jobdispatch_req's wire-size computation in lib/request.c, producing a multi-exabyte allocation request that ASAN correctly aborted on.

Fix

FIXED (2026-09-09, xce-test-cli-ux task 3.2). Every per-call-site heap block (all ~26 _call_t typedefs test.c's interrupt-wrapping introduces) now allocates via calloc(1, sizeof(*call)) instead of malloc(sizeof(*call)), zero-initializing every field uniformly rather than auditing each wrapped request struct for a similarly-never-fully-set field one at a time -- the same defensive default an accidentally-zero stack frame was already silently relied on for. Verified by re-running the exact live repro (jobrun against a real single-node deploy) after the fix: completes normally with no ASAN error.

Verification

Not recorded (migrated from buglog.json).

References

  • Related: bug-1791