From d9707bcaac12d20c07adaacdde62f7618547deee Mon Sep 17 00:00:00 2001
From: Willem Melching <willem.melching@gmail.com>
Date: Mon, 8 Mar 2021 15:42:09 +0100
Subject: [PATCH] manager: check if process is running before sending signal

old-commit-hash: af2a847f0647320c2e741221ca70ebf3657182f3
---
 selfdrive/manager/process.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/selfdrive/manager/process.py b/selfdrive/manager/process.py
index b7af893c05..8edd102d57 100644
--- a/selfdrive/manager/process.py
+++ b/selfdrive/manager/process.py
@@ -107,6 +107,10 @@ class ManagerProcess(ABC):
     return ret
 
   def signal(self, sig):
+    if self.proc is None:
+      return
+
+    # Don't signal if already exited
     if self.proc.exitcode is not None and self.proc.pid is not None:
       return