linux-kernel - Re: Bash not reacting to Ctrl-C

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Message-ID: <20110209145304.GB16737@elte.hu>
Date:	Wed, 9 Feb 2011 15:53:04 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Michael Witten <mfwitten@...il.com>
Cc:	Oleg Nesterov <oleg@...hat.com>, Tejun Heo <tj@...nel.org>,
	roland@...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>,
	Thomas Gleixner <tglx@...utronix.de>,
	Frédéric Weisbecker <fweisbec@...il.com>
Subject: Re: Bash not reacting to Ctrl-C


* Michael Witten <mfwitten@...il.com> wrote:

> On Mon, Feb 7, 2011 at 07:08, Oleg Nesterov <oleg@...hat.com> wrote:
> > Now that it is clear what happens, the test-case becomes even more
> > trivial:
> >
> >        bash-4.1$ ./bash -c 'while true; do /bin/true; done'
> >        ^C^C
> >
> > needs 4-5 attempts on my machine.
> 
> I feel like the odd penguin out.
> 
> I can't reproduce the behavior in question when using that example (I
> haven't tried the other).
> 
> I'm running:
> 
>     * bash version 4.1.9(2)-release (i686-pc-linux-gnu)
> 
>     * linux 2.6.38-rc4 (100b33c8bd8a3235fd0b7948338d6cbb3db3c63d)

Oleg provided another testcase, can you reproduce the Ctrl-C problem with this 
it?

#!/bin/bash

perl -we '$SIG{INT} = sub {exit}; sleep'

echo "Hehe, I am going to sleep after ^C"
sleep 100


Thanks,

	Ingo
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