From 97419ba733136ae55695d86b39ef4a7d89107c16 Mon Sep 17 00:00:00 2001
From: Meliox <na>
Date: Tue, 18 Aug 2026 19:12:22 +0200
Subject: [PATCH] fix

---
 src/modules/node_info/files/ProcessManager.pm |  9 ++++++++-
 src/modules/node_info/files/Utils.pm          | 10 +++++++++-
 2 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/src/modules/node_info/files/ProcessManager.pm b/src/modules/node_info/files/ProcessManager.pm
index 741717f..c375941 100644
--- a/src/modules/node_info/files/ProcessManager.pm
+++ b/src/modules/node_info/files/ProcessManager.pm
@@ -112,7 +112,14 @@ sub notify_pve_mod_worker {
 # ============================================================================
 
 sub _worker_lock_file_exists {
-    return -f $pve_mod_worker_lock;
+    return 0 unless -f $pve_mod_worker_lock;
+    my $pid = read_lock_pid($pve_mod_worker_lock);
+    if (defined $pid && $pid =~ /^(\d+)$/ && is_process_alive($1)) {
+        return 1;
+    }
+    debug(__LINE__, "Stale or zombie worker lock found, removing it");
+    unlink($pve_mod_worker_lock);
+    return 0;
 }
 
 # Forks the worker process and records its PID in the lock file.
diff --git a/src/modules/node_info/files/Utils.pm b/src/modules/node_info/files/Utils.pm
index 2dcc765..48deeb1 100644
--- a/src/modules/node_info/files/Utils.pm
+++ b/src/modules/node_info/files/Utils.pm
@@ -91,7 +91,15 @@ sub read_sysfs {
 
 sub is_process_alive {
     my ($pid) = @_;
-    return -d "/proc/$pid";
+    return 0 unless -d "/proc/$pid";
+    # A zombie still has /proc/<pid> but is dead - otherwise a stale
+    # worker lock is never cleaned up.
+    if (open my $fh, '<', "/proc/$pid/stat") {
+        my $line = <$fh>;
+        close $fh;
+        return 0 if defined $line && $line =~ /\)\s+Z\s/;
+    }
+    return 1;
 }
 
 sub read_lock_pid {