diff --git a/lisa/features/serial_console.py b/lisa/features/serial_console.py
index e86dd021f2..ff7f4ecf72 100644
--- a/lisa/features/serial_console.py
+++ b/lisa/features/serial_console.py
@@ -63,6 +63,7 @@ class SerialConsole(Feature):
         # more NUMA nodes on AMD processors.
         # The call trace is annoying but does not affect correct operation of the VM.
         re.compile(r"(.*RIP: 0010:topology_sane.isra.*)$", re.MULTILINE),
+        re.compile(r".*EFI stub:.*FIRMWARE BUG: kernel image not aligned on 64k boundary.*", re.IGNORECASE),
     ]
 
     # Patterns for extracting error codes from panic messages
diff --git a/lisa/microsoft/testsuites/stress/tlb_stress.py b/lisa/microsoft/testsuites/stress/tlb_stress.py
index a4289bcf11..c756625934 100644
--- a/lisa/microsoft/testsuites/stress/tlb_stress.py
+++ b/lisa/microsoft/testsuites/stress/tlb_stress.py
@@ -715,6 +715,7 @@ def _deploy_tlb_program(self) -> None:
 
         # Create working directory
         self.node.execute(f"mkdir -p {self._work}", sudo=True)
+        self.node.execute(f"chmod 777 {self._work}", sudo=True)
 
         # Get the C program from the same directory
         c_program_path = Path(__file__).parent / "tlb_flush_stress.c"
diff --git a/lisa/tools/modprobe.py b/lisa/tools/modprobe.py
index 1d3ce0cbee..7d3d33d4a9 100644
--- a/lisa/tools/modprobe.py
+++ b/lisa/tools/modprobe.py
@@ -194,6 +194,14 @@ def reload(
         modprobe_reloader_script: CustomScript = self.node.tools[modprobe_reloader_tool]
         modprobe_reloader_script.run(parameters, sudo=True, shell=True, nohup=True)
 
+        original_user = self.node.connection_info.get('username', None)
+        if original_user:
+            self.node.execute(
+                f"chown {original_user}:{original_user} {loop_process_pid_file_name}",
+                sudo=True,
+                shell=True,
+            )
+
         cat = self.node.tools[Cat]
         tried_times: int = 0
         timer = create_timer()