Hi, When the kernel boots up and mounts the root file system, the kernel start to do "execve("/sbin/AP",argv_init,envp_init)" to run a AP. But in my case, it panics when kernel tries to do the "execve("/sbin/AP",argv_init,envp_init)". The kernel panic message shows " Kernel panic: Attempted to kill init! ". What situation will trigger such kernel panic? Thanks, KJ