From 9b04abfb5e6c6ac0321841f5ebcf6ba288c61fb2 Mon Sep 17 00:00:00 2001
From: Ian Moffett <ian@osmora.org>
Date: Tue, 8 Jul 2025 16:41:50 -0400
Subject: kernel: exit: Panic if PID 1 dies

Signed-off-by: Ian Moffett <ian@osmora.org>
---
 sys/kern/kern_exit.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/sys/kern/kern_exit.c b/sys/kern/kern_exit.c
index c00f39b..a4bf0f9 100644
--- a/sys/kern/kern_exit.c
+++ b/sys/kern/kern_exit.c
@@ -30,6 +30,7 @@
 #include <sys/proc.h>
 #include <sys/sched.h>
 #include <sys/syslog.h>
+#include <sys/panic.h>
 #include <vm/physmem.h>
 #include <vm/dynalloc.h>
 #include <vm/vm.h>
@@ -118,6 +119,10 @@ exit1(struct proc *td, int flags)
     struct cpu_info *ci;
     pid_t target_pid, curpid;
 
+    if (td->pid == 1) {
+        panic("init died\n");
+    }
+
     ci = this_cpu();
     target_pid = td->pid;
     curtd = this_td();
-- 
cgit v1.2.3