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ci: upload test reports when a watchdog-dumped job times out #880

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Merged
rkennke merged 2 commits into from
Oct 22, 2026
Merged

ci: upload test reports when a watchdog-dumped job times out #880

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80f1cde
ci: upload test reports when a watchdog-dumped job times out
rkennke Oct 21, 2026
600c473
ci: let the hang watchdog attach, and dump Java stacks too
rkennke Oct 21, 2026
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25 changes: 20 additions & 5 deletions .github/workflows/test_workflow.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -139,15 +139,21 @@ jobs:
# GDB watchdog for debug config: dumps all native threads if the JVM hangs
# inside JVMTI (e.g. the IBM SDK 8 slow-suite deadlock) before the 180-min
# job timeout fires, so a thread dump lands in the test-reports artifact.
# prepare_reports.sh copies build/logs/gdb-watchdog.log on failure.
# prepare_reports.sh copies build/logs/gdb-watchdog.log, and the test
# reports are uploaded on failure or, if the dump exists, on timeout.
if [[ "${{ matrix.config }}" == "debug" ]]; then
mkdir -p build/logs
(
sleep 1200 # 20 minutes — well past the normal ~6 min runtime
echo "::warning::GDB watchdog triggered after 20 minutes"
for pid in $(pgrep -f 'java.*ddprof-test'); do
echo "=== Thread dump for PID $pid ===" >> build/logs/gdb-watchdog.log
gdb -batch -ex 'thread apply all bt full' -p "$pid" >> build/logs/gdb-watchdog.log 2>&1 || true
# Java-level stacks and lock owners: HotSpot prints them to stdout,
# J9 writes a javacore file that prepare_reports.sh collects.
kill -QUIT "$pid" 2>/dev/null || true
# sudo: Ubuntu's yama ptrace_scope=1 only lets a process attach to its
# own descendants, and the JVM is not one of the watchdog's.
sudo gdb -batch -ex 'thread apply all bt full' -p "$pid" >> build/logs/gdb-watchdog.log 2>&1 || true
done
) &
GDB_WATCHDOG_PID=$!
Expand Down Expand Up @@ -233,9 +239,11 @@ jobs:
with:
name: (unwinding-reports) unwinding-linux-glibc-amd64 (${{ matrix.java_version }}, ${{ matrix.config }}, ${{ inputs.slow_tests && 'slow' || 'regular' }})
path: unwinding-reports
# A hang that runs into the job timeout ends the job as cancelled, not
# failed; upload then too if the gdb watchdog left a thread dump.
- name: Upload test reports
uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
if: failure()
if: failure() || (cancelled() && hashFiles('build/logs/gdb-watchdog.log') != '')
with:
name: (test-reports) test-linux-glibc-amd64 (${{ matrix.java_version }}, ${{ matrix.config }}, ${{ inputs.slow_tests && 'slow' || 'regular' }})
path: test-reports
Expand Down Expand Up @@ -521,7 +529,12 @@ jobs:
echo "::warning::GDB watchdog triggered after 25 minutes"
for pid in $(pgrep -f 'java.*ddprof-test'); do
echo "=== Thread dump for PID $pid ===" >> build/logs/gdb-watchdog.log
gdb -batch -ex 'thread apply all bt full' -p "$pid" >> build/logs/gdb-watchdog.log 2>&1 || true
# Java-level stacks and lock owners: HotSpot prints them to stdout,
# J9 writes a javacore file that prepare_reports.sh collects.
kill -QUIT "$pid" 2>/dev/null || true
# sudo: Ubuntu's yama ptrace_scope=1 only lets a process attach to its
# own descendants, and the JVM is not one of the watchdog's.
sudo gdb -batch -ex 'thread apply all bt full' -p "$pid" >> build/logs/gdb-watchdog.log 2>&1 || true
done
) &
GDB_WATCHDOG_PID=$!
Expand Down Expand Up @@ -607,9 +620,11 @@ jobs:
with:
name: (unwinding-reports) unwinding-linux-glibc-aarch64 (${{ matrix.java_version }}, ${{ matrix.config }}, ${{ inputs.slow_tests && 'slow' || 'regular' }})
path: unwinding-reports
# A hang that runs into the job timeout ends the job as cancelled, not
# failed; upload then too if the gdb watchdog left a thread dump.
- name: Upload test reports
uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
if: failure()
if: failure() || (cancelled() && hashFiles('build/logs/gdb-watchdog.log') != '')
with:
name: (test-reports) test-linux-glibc-aarch64 (${{ matrix.java_version }}, ${{ matrix.config }}, ${{ inputs.slow_tests && 'slow' || 'regular' }})
path: test-reports
Expand Down
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