Re: Sarge box not rebooting..

[Miquel van Smoorenburg <miquels@cistron.nl>]

On 2004.12.29 16:20, Robert Waldner wrote:
> On Tue, 28 Dec 2004 18:30:27 +0100, Robert Waldner writes:
> >>No, kill(-1, SIGWHATEVER) is guaranteed to kill all processes
> >>/except/ the caller. "man 2 kill" on any unix/linux box. What kernel
> >>are you using, this might be a kernel bug. Is this an i386 or
> >>another architecture ?
>
> >2.4.27, from kernel-image-2.4.27-1-386, i386 arch, straight Sarge
> > from d-i RC2, `apt-get upgrade` up-to-date as of now.
>
> >I've put more info (`dpkg -l`, `ps auxwww`, cpuinfo, meminfo, lsmod) at
> > http://www.waldner.priv.at/temp/machine.txt (it'd make for one long
> > email otherwise).
>
> I've now tested through a couple kernel-images, and found that the 
>  problem does NOT manifest itself when it's an SMP-kernel, eg 
>  2.4.26-1-686-smp and 2.4.27-1-686-smp are fine, but the default 
>  2.4.26/7-1-386 and their respective -686 siblings aren't.
>
> What remains is the question if I should file this as a (grave?) bug 
>  against kernel-image-2.4.27-1-386.
>
> And, for people googling this up later: DO NOT run the standard Sarge 
>  kernel 2.4.27-1-386 on HP/Compaq DL380 machines, you won't be able to 
>  reboot/shutdown them.

Well, it would be perfect if you could reproduce this. Try something like:

#include <stdio.h>
#include <signal.h>

void sigcld(int sig)
{
	printf("Caught SIGCLD\n");
}

int main()
{
	signal(SIGCLD, sigcld);
	kill(-1, SIGCLD);
	sleep(2);
	return 0;
}

If this prints "Caught SIGCLD" then that is a severe kernel bug.
Try both "cc foo.c" and "cc foo.c -lpthread" please.

Oh and what is the output of "ldd /sbin/killall5" ?

Mike.