Re: [PATCH] kernel/exit: do panic earlier to get coredump if global init task exit

[Oleg Nesterov]

can't you use is_global_init() && group_dead ?

On 12/12, Oleg Nesterov wrote:
>
> On 12/12, qiwuchen55@xxxxxxxxx wrote:
> >
> > Of course testing signal_group_exit() is not sufficient. It is still
> > possible that this is someone calling exit(2)
> 
> Or execve(), so
> 
> > @@ -785,6 +781,9 @@ void __noreturn do_exit(long code)
> >  		panic("Aiee, killing interrupt handler!");
> >  	if (unlikely(!tsk->pid))
> >  		panic("Attempted to kill the idle task!");
> > +	if (unlikely(is_global_init(tsk) &&
> > +		(signal_group_exit(tsk->signal) || thread_group_empty(tsk))))
> > +		panic("Attempted to kill init! exitcode=0x%08lx\n", code);
> 
> so this can panic() if one of init's threads does does exec.
> 
> Oleg.