linux-kernel - Re: [PATCHSET] ptrace,signal: group stop / ptrace updates

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Date:	Fri, 28 Jan 2011 20:04:13 +0200
From:	Anca Emanuel <anca.emanuel@...il.com>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	Ingo Molnar <mingo@...e.hu>, Tejun Heo <tj@...nel.org>,
	roland@...hat.com, oleg@...hat.com, jan.kratochvil@...hat.com,
	linux-kernel@...r.kernel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Frédéric Weisbecker <fweisbec@...il.com>,
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
Subject: Re: [PATCHSET] ptrace,signal: group stop / ptrace updates

On Fri, Jan 28, 2011 at 7:41 PM, Thomas Gleixner <tglx@...utronix.de> wrote:
> On Fri, 28 Jan 2011, Ingo Molnar wrote:
>> See that '^C^C' line? That is where i had to do Ctrl-C twice.
>>
>> It only fails here about once every 10 times, so it's very rare. I have a stock F14
>> system running on that box, with the very latest .38 based kernel.
>
> Tripped over the refuse ^C thing today twice. Had to kill a kernel
> build from another shell. It just happily displayed ^C and never
> stopped. That happens once in a while and I have no idea either how to
> debug that.

cc: Mathieu

Use lttng ?
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