fix: for handling zombie process (#1801)

tests/utils/managed_process.py

@@ -140,7 +140,7 @@ class ManagedProcess:
                             cmdline,
                         )
                         terminate_process_tree(ps_process.pid, self._logger)
-            except (psutil.NoSuchProcess, psutil.AccessDenied):
+            except (psutil.NoSuchProcess, psutil.AccessDenied, psutil.ZombieProcess):
                 # Process may have terminated or become inaccessible during iteration
                 pass
 
@@ -256,7 +256,11 @@ class ManagedProcess:
     def _terminate_existing(self):
         if self.terminate_existing:
             for proc in psutil.process_iter(["name", "cmdline"]):
-                if proc.name() == self._command_name or proc.name() in self.stragglers:
+                try:
+                    if (
+                        proc.name() == self._command_name
+                        or proc.name() in self.stragglers
+                    ):
                         self._logger.info(
                             "Terminating Existing %s %s", proc.name(), proc.pid
                         )
@@ -271,6 +275,13 @@ class ManagedProcess:
                                 proc.cmdline(),
                             )
                             terminate_process_tree(proc.pid, self._logger)
+                except (
+                    psutil.NoSuchProcess,
+                    psutil.AccessDenied,
+                    psutil.ZombieProcess,
+                ):
+                    # Process may have terminated or become inaccessible during iteration
+                    pass
 
 
 def main():