linux-kernel - Re: Fork Bombing Patch

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Message-ID: <7b9198260708231737r5709788bmec4d294361b21a4a@mail.gmail.com>
Date:	Fri, 24 Aug 2007 01:37:40 +0100
From:	"Tom Spink" <tspink@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: Re: Fork Bombing Patch

On 23/08/07, Krzysztof Halasa <khc@...waw.pl> wrote:
> Chris Snook <csnook@...hat.com> writes:
>
> > Wrapping a single printk that's unrelated to debugging in an #ifdef
> > CONFIG_* or a sysctl strikes me as abuse of those configuration
> > facilities.
>
> Abuse, probably not (if a thing is required on one system and must
> not be on another, it has to be configurable). If the printk is
> a good idea... IMHO hardly, at best. We don't warn about trying to
> write to /vmlinuz after all.
>
> ulimit/pam_limits should fix the (IMHO nonexistent) problem nicely.
> One has to plug all the holes, though (e.g. $HOME/.forward).
> --
> Krzysztof Halasa
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Hi,

I agree with Chris on this point, it seems like this sort of detection
(and reporting) should be a job for a user-space daemon, rather than
polluting kernel code (and logs) with warning messages of this sort...
I don't think the type of warning this patch yields is appropriate for
kernel logs, nor do I think the kernel should be the entity to decide
that this warning should be given.

It _feels_ wrong.

--
Regards,
Tom Spink
University of Edinburgh
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