GHA: Get diagnostics data from hanging check-context test

.github/workflows/linux.yml

@@ -108,6 +108,27 @@ jobs:
                 make DESTDIR=/tmp/h5l install
                 cd /tmp/h5l
                 tar czf $HOME/heimdal-install-linux-${{ matrix.compiler }}.tgz .
+            - name: Interrupted/timed out test diagnostics
+              if: ${{ cancelled() || failure() }}
+              run: |
+                set -x
+                # Show any test-related processes still running
+                ps auxww | grep -E 'kdc|test_context|kinit|kadmin|check-' | grep -v grep || true
+                # Show who's on the test port
+                ss -tlnp sport = :49188 || true
+                # Show the newest .log file (the one likely interrupted)
+                newest=$(find build/tests -name '*.log' -newer build/tests/gss/Makefile -printf '%T@ %p\n' 2>/dev/null | sort -rn | head -1 | cut -d' ' -f2-)
+                if [ -n "$newest" ]; then
+                  echo "=== Newest test log: $newest ==="
+                  cat "$newest"
+                fi
+                # Also show KDC messages.log if any exist
+                for f in build/tests/gss/messages.log build/tests/kdc/messages.log; do
+                  if [ -f "$f" ]; then
+                    echo "=== $f ==="
+                    tail -100 "$f"
+                  fi
+                done
             - name: Core dump stacks
               if: ${{ always() }}
               run: |

tests/bin/test-lib.sh

@@ -272,7 +272,7 @@ test_run_x() {
 
     # Run with tracing enabled
     (
-        set -x
+        set -vx
         "$@"
     ) > "$cmd_out" 2>"$trace_out"
     rc=$?

tests/gss/check-context.in

@@ -77,6 +77,8 @@ rm -f mkey.file*
 
 test_init
 
+alias test_run=test_run_x
+
 test_section "Creating database"
 # add both lucid and lucid.test.h5l.se to simulate aliases
 # XXX ext should ext aliases too