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Date: Fri, 15 Mar 2002 14:28:55 +0000
From: Russell King <rmk@arm.linux.org.uk>
To: David Woodhouse <dwmw2@infradead.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH] 2.4 and 2.5: remove Alt-Sysrq-L
Message-ID: <20020315142854.E24984@flint.arm.linux.org.uk>
In-Reply-To: <20020315131612.C24984@flint.arm.linux.org.uk> <30439.1016201464@redhat.com>
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In-Reply-To: <30439.1016201464@redhat.com>; from dwmw2@infradead.org on Fri, Mar 15, 2002 at 02:11:04PM +0000
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On Fri, Mar 15, 2002 at 02:11:04PM +0000, David Woodhouse wrote:
> rmk@arm.linux.org.uk said:
> >  The following patch removes Alt-Sysrq-L and its associated hack to
> > kill of PID1, the init process.  This is a mis-feature.
> 
> This is not a mis-feature.
> 
> > If PID1 is killed, the kernel immediately enters an infinite loop in
> > the depths of do_exit() with interrupts disabled, completely locking
> > the machine.  Obviously you can only reach for the reset button or
> > power switch after this, leaving you with dirty filesystems.
> 
> This is a mis-feature. Leaving you without even the facility to use SysRq 
> any further is just insane.

Well, I've tried this approach, Linus rejected it.

If you'd like to take up this problem, be my guest.

-- 
Russell King (rmk@arm.linux.org.uk)                The developer of ARM Linux
             http://www.arm.linux.org.uk/personal/aboutme.html

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