50 lines
1.9 KiB
Markdown
50 lines
1.9 KiB
Markdown
---
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id: "bug-1942"
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status: "open"
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status_updated: "2026-10-10"
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status_note: "newly logged"
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component: "controller"
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severity: "wrong-result"
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timestamp: "2026-10-10T08:14:51Z"
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last_seen: "2026-10-10T08:14:51Z"
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occurrences: 1
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files: ["src/controller/job.c"]
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tags: ["controller", "job-control", "parallel"]
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related: []
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---
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# bug-1942: xce_controller sends job control of a multi-host job only to its first host
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## Description
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**Observed:** (source reading, `.kiro/reviews/project-gap-review-2026-10-10.md` (P0); to be confirmed by a failing test before the fix)
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Job control is routed to `allocs[0]->host` only (`src/controller/job.c:2126-2131`).
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**Expected:** Signals reach every host of the job (or the job's launcher is documented to fan them out and does so).
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**Impact:** Suspending or killing a multi-host job can leave its tasks on other hosts running.
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**Found by:** review: `.kiro/reviews/project-gap-review-2026-10-10.md` (P0)
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## Environment
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- OS: no /etc/os-release; Docker container; NixOS kernel; kernel Linux 6.18.33 x86_64
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- libc: glibc 2.42-47 (interpreter /nix/store/wb6rhpznjfczwlwx23zmdrrw74bayxw4-glibc-2.42-47/lib/ld-linux-x86-64.so.2)
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- Toolchain: gcc (GCC) 15.2.0, meson 1.9.1
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- Build: asan (xce.build)
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- Code: scheduler-framework @ 94472ee3-dirty
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- Deployment: any (found by source reading; the failing test that confirms it is named in Verification)
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## Reproduction
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1. Run a 2-host job (e.g. `/xce-test-multihost`), stop it.
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2. Tasks on the second host keep running.
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- Frequency: deterministic (by code reading; confirmed by the RED test of the fix)
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- Evidence: the code sites quoted in Description; no logs kept.
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## Root cause
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TODO: required for fixed/partial
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## Fix
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TODO: required for fixed/partial
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## Verification
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- Test: TODO: name + file; RED before the fix, GREEN after
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- Suites: TODO: suite results and build profile
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- Live: TODO: soak/deploy run, or n/a and why
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## References
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- Related: none
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