[rkennke]

What

The Upload test reports step in the glibc amd64 and glibc aarch64 test jobs now also runs when the job was cancelled and the gdb watchdog left a thread dump (build/logs/gdb-watchdog.log):

if: failure() || (cancelled() && hashFiles('build/logs/gdb-watchdog.log') != '')

Why

The gdb watchdog (#760) dumps the native threads of a hung test JVM after 20 minutes, so that the dump "lands in the test-reports artifact" before the 180-minute job timeout. But when the timeout fires, GitHub ends the job as cancelled, not failed. prepare_reports.sh (an always() step) still copies the dump into test-reports/, but the upload step is if: failure(), so it is skipped and the dump is lost. That is exactly the case the watchdog exists for.

Seen on #868: test-linux-glibc-amd64 (8-ibm, debug, regular) hung in the regular suite, most likely the IBM SDK 8 JVMTI deadlock from #760, which so far had been seen only in the slow suite. The watchdog fired at 20 minutes, the job timed out at 180 minutes, and no artifact was uploaded. The job log confirms that always() steps run after the timeout: Prepare reports ran, and Upload CI outcome ran but found no file.

The watchdog itself could not attach

This PR's own CI run hit the same 8-ibm hang, and the new upload worked. But the uploaded gdb-watchdog.log held only ptrace: Inappropriate ioctl for device for both JVMs. Ubuntu's yama ptrace_scope=1 only lets a process attach to its own descendants, so the watchdog has never produced a dump on these runners. The second commit fixes that:

• It runs gdb with sudo, which these runners allow without a password (the ASan path already uses sudo sysctl).
• Before attaching, it sends the JVM SIGQUIT for Java-level stacks and lock owners. HotSpot prints them to stdout; J9 writes a javacore file, which prepare_reports.sh already collects.

What the uploaded test-raw.log did show: the hang is in DatadogSettingsTest.testRecordDatadogSetting (cpu=1ms, IBM SDK 8, CPU engine asgct), between the profiler start (6 libraries patched) and the stop's Restore libraries. That's the same test that hung on #868.

Scope

• Only the two jobs with a gdb watchdog: the amd64 debug watchdog and the aarch64 ASan one, for both the upload condition and the watchdog commands.
• Gating on the dump file keeps runs cancelled for other reasons, e.g. superseded by a newer push under ci.yml's cancel-in-progress, from uploading anything, unless the watchdog had already fired.
• Nothing else changes: the step conditions for successful and failed runs are the same as before, and the watchdog still only fires after 20 (amd64) or 25 (aarch64 ASan) minutes.

🤖 Generated with Claude Code

[chatgpt-codex-connector]

Codex Review Summary

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Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-10-21T14:16:50.596990Z	80f1cde	PR opened

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[datadog-datadog-prod-us1]

More details

The upload conditions preserve failure uploads and allow cancelled jobs to upload reports when a watchdog dump exists. Report preparation already runs after cancellation, so the collected dump remains available for upload.

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[dd-octo-sts]

✅ All 40 integration tests passed

📊 Dashboard · 👷 Pipeline · 📦 600c4730

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CI Test Results

Run: #39615128483 | Commit: 8bbc44f | Duration: 3h 0m 23s (longest job)

✅ All 32 test jobs passed

Status Overview

JDK	glibc-aarch64/debug	glibc-amd64/debug	musl-aarch64/debug	musl-amd64/debug
8	-	✅	-	-
8-ibm	-	🚫	-	-
8-j9	✅	✅	-	-
8-librca	-	-	✅	✅
8-orcl	-	✅	-	-
11	-	✅	-	-
11-j9	✅	✅	-	-
11-librca	-	-	✅	✅
17	✅	✅	-	-
17-graal	✅	✅	-	-
17-j9	✅	✅	-	-
17-librca	-	-	✅	✅
21	✅	✅	-	-
21-graal	✅	✅	-	-
21-librca	-	-	✅	✅
25	✅	✅	-	-
25-graal	✅	✅	-	-
25-librca	-	-	✅	✅

Legend: ✅ passed | ❌ failed | ⚪ skipped | 🚫 cancelled

Summary: Total: 32 | Passed: 31 | Failed: 0 | Cancelled: 1

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Updated: 2026-10-21 17:17:20 UTC