From d897924b4503dda2d63c9c865e640ee9b5fc32d2 Mon Sep 17 00:00:00 2001
From: Nick Hill <nhill@redhat.com>
Date: Fri, 19 Sep 2025 21:28:31 -0700
Subject: [PATCH] [BugFix] Exclude self when checking for port collision
 (#25286)

Signed-off-by: Nick Hill <nhill@redhat.com>
Signed-off-by: yewentao256 <zhyanwentao@126.com>
---
 vllm/utils/__init__.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/vllm/utils/__init__.py b/vllm/utils/__init__.py
index d4013a69e99fe..fd1c0af31269c 100644
--- a/vllm/utils/__init__.py
+++ b/vllm/utils/__init__.py
@@ -987,8 +987,10 @@ def find_process_using_port(port: int) -> Optional[psutil.Process]:
     if sys.platform.startswith("darwin"):
         return None
 
+    our_pid = os.getpid()
     for conn in psutil.net_connections():
-        if conn.laddr.port == port:
+        if conn.laddr.port == port and (conn.pid is not None
+                                        and conn.pid != our_pid):
             try:
                 return psutil.Process(conn.pid)
             except psutil.NoSuchProcess: