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

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Date:	Thu, 12 Oct 2006 12:54:06 +0200
From:	Joerg Platte <lists@...sa.net>
To:	Willy Tarreau <w@....eu>
Cc:	Günther Starnberger <gst@...frog.org>,
	linux-kernel@...r.kernel.org
Subject: Re: Userspace process may be able to DoS kernel

Am Donnerstag, 12. Oktober 2006 08:49 schrieb Willy Tarreau:
> On Thu, Oct 12, 2006 at 08:02:58AM +0200, Joerg Platte wrote:
> > Using 2.6.18 does not solve the problem. I can see exactly the same
> > behavior with a vanilla and not tainted 2.6.18 kernel.
>
> Just out of curiosity, does the system still respond to ping during this
> period, and does the time still progress during the lock up ? Not that it
> could help me find out what's happening, but it might help troubleshooting
> the problem.

Pinging the system works and the the time is still correct. But this time I 
was not able to trigger a kernel warning, because I was not able to generate 
a long lockup. Maybe I'll have to wait a few more hours before trying it 
again, because the duration of the lockup is proportional to the time skype 
is running.

regards,
Jörg
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