linux-kernel - Re: Userspace process may be able to DoS kernel

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Message-Id: <1160669968.24931.38.camel@mindpipe>
Date:	Thu, 12 Oct 2006 12:19:27 -0400
From:	Lee Revell <rlrevell@...-job.com>
To:	Jan Engelhardt <jengelh@...ux01.gwdg.de>
Cc:	Günther Starnberger <gst@...frog.org>,
	linux-kernel@...r.kernel.org
Subject: Re: Userspace process may be able to DoS kernel

On Thu, 2006-10-12 at 18:10 +0200, Jan Engelhardt wrote:
> >> As most users who reported this problem are using Ubuntu,
> >> the problem may be related to one of the settings in Ubuntu's kernel
> >> config. The configuration of my kernel is also based on the Ubuntu
> >> kernel config. As I am not using the patched kernel by Ubuntu I hope
> >> that the LKML is the right place to report this issue. 
> >
> >IIRC Ubuntu is the only major distro that ships with CONFIG_PREEMPT=y.
> >Any difference if you disable it?
> 
> SUSE uses CONFIG_PREEMPT(?) Voluntary Preemption too.

CONFIG_PREEMPT_VOLUNTARY != CONFIG_PREEMPT

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