diff --git a/.github/workflows/linux-control-agent.yml b/.github/workflows/linux-control-agent.yml
index bdba09b..d854788 100644
--- a/.github/workflows/linux-control-agent.yml
+++ b/.github/workflows/linux-control-agent.yml
@@ -82,6 +82,12 @@ jobs:
               sudo sh -c "tr '\0' '\n' </proc/$main_pid/environ | grep '^ASPNETCORE_'" \
                 >>"$smoke_log" 2>&1 || true
               sudo sh -c "printf 'wchan='; cat /proc/$main_pid/wchan" >>"$smoke_log" 2>&1 || true
+              sudo ls -l "/proc/$main_pid/fd" >>"$smoke_log" 2>&1 || true
+              sudo lsof -p "$main_pid" >>"$smoke_log" 2>&1 || true
+              if command -v strace >/dev/null 2>&1; then
+                sudo timeout 3 strace -f -p "$main_pid" -e trace=file,network,read,write,poll,select \
+                  >>"$smoke_log" 2>&1 || true
+              fi
             fi
             message="$(tail -c 6000 "$smoke_log" | sed ':a;N;$!ba;s/%/%25/g;s/\r/%0D/g;s/\n/%0A/g')"
             printf '::error title=%s::%s\n' "$title" "$message"