From owner-freebsd-current  Thu Nov 14  5:39:13 2002
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Date: Thu, 14 Nov 2002 05:39:12 -0800 (PST)
From: David Xu <davidxu@FreeBSD.org>
Message-Id: <200211141339.gAEDdC7i052478@freefall.freebsd.org>
To: "current@FreeBSD.ORG" <current@FreeBSD.ORG>,
	"Tim Robbins" <tjr@FreeBSD.ORG>
Subject: Re: truss and KSE
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What is your revision of kern_thread.c? revision 1.58 should fix this problem.

----- Original Message ----- 
From: "Tim Robbins" <tjr@FreeBSD.ORG>
To: <current@FreeBSD.ORG>
Sent: Thursday, November 14, 2002 9:06 PM
Subject: truss and KSE


> While experimenting with the new libpthread, I found that if you run
> `truss' on a KSE process, both truss and its victim get into a weird
> state and don't respond to TERM, INT or QUIT signals. The truss proc
> dies if you send it the KILL signal, but the victim process cannot be
> killed. Stranger still, it's in the run state but not actually
> performing any work.
> 
> I understand that KSE is still an experimental feature but I thought
> this was worth pointing out because it could be used as a local DoS
> and we are nearing 5.0-RELEASE.
> 
> 
> Tim
> 
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