[PATCH] "Kernel panic - not syncing: Attempted to kill init!" at poweroff/halt

[PATCH] "Kernel panic - not syncing: Attempted to kill init!" at poweroff/halt

[Jan Kämpe]

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Under linux at runit poweroff/halt one might get "kernel panic"

[snip]
- runit: power off...
Shutdown: hda
System halted.
Kernel panic - not syncing: Attempted to kill init!

Workaround for the kernel panic in  attached patch ...

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--- ./src/reboot_system.h2.jk2	2006-06-29 10:53:17.000000000 +0300
+++ ./src/reboot_system.h2	2006-08-16 10:29:16.000000000 +0300
@@ -1,8 +1,20 @@
 #include <unistd.h>
 #include <sys/reboot.h>
+#include <sys/types.h>
+#include <sys/wait.h>
 
 /* sysdep: +std reboot */
 
 int reboot_system(int what) {
-  return(reboot(what));
+  int pid, status;
+ /* fork() before calling reboot since the linux kernel calls do_exit(0) in
+  * kernel/sys.c, which can cause kernel to panic as
+  * the init process would exit ... 
+  */
+  if ((pid = fork()) == 0) {
+ 	reboot(what);
+	_exit(0);
+  }
+  waitpid(pid, &status, 0);
+  return(0);
 }

Re: [PATCH] "Kernel panic - not syncing: Attempted to kill init!" at poweroff/halt

[Gerrit Pape]

On Wed, Aug 16, 2006 at 01:40:27PM +0300, Jan K?mpe wrote:
> Under linux at runit poweroff/halt one might get "kernel panic"
> 
> [snip]
> - runit: power off...
> Shutdown: hda
> System halted.
> Kernel panic - not syncing: Attempted to kill init!
> 
> Workaround for the kernel panic in  attached patch ...

Thanks, this makes sense.  I'll include a fix in the upcoming version.

Regards, Gerrit.