Re: [DNG] Linux system can be brought down by sending SIGILL to Systemd
On Fri, 24 May 2019 14:01:35 -0700
Fred <fred@blakemfg.com> wrote:
> Hello,
> I subscribe to the Devuan Linux mailing list. This posting just
> arrived and it appears quite important to Debian.
>
> -------- Forwarded Message --------
> Subject: [DNG] Linux system can be brought down by sending
> SIGILL to Systemd
> Date: Fri, 24 May 2019 22:04:34 +0200
> From: Martin Steigerwald <martin@lichtvoll.de>
> To: DNG <dng@lists.dyne.org>
>
>
>
> Hi!
>
> Today in a Linux training a participant attempted to bring down Debian
> workstation with Systemd by sending signals to PID 1 as I invited them
> to try to bring down PID 1 while thinking for myself that this would
> not be possible from my past experiences about trying to bring down
> PID 1 – init – myself.
# while true; do kill -ILL 1 ; echo -n "." ; sleep 0.5 ; done
...........................^C
no problem here
kernel 5.1.4 stretch amd64 with systemd
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