linux-kernel - Re: [RFC PATCH] set TASK_TRACED before arch

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Message-ID: <3877989d0805230533u73c3d09agacf94d80bf99a0bb@mail.gmail.com>
Date:	Fri, 23 May 2008 20:33:14 +0800
From:	"Luming Yu" <luming.yu@...il.com>
To:	"Petr Tesarik" <ptesarik@...e.cz>
Cc:	"Roland McGrath" <roland@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>, linux-ia64@...r.kernel.org
Subject: Re: [RFC PATCH] set TASK_TRACED before arch_ptrace code to fix a race

On Thu, May 22, 2008 at 8:12 PM, Petr Tesarik <ptesarik@...e.cz> wrote:
> On Thu, 2008-05-22 at 04:18 -0700, Roland McGrath wrote:
>> I really cannot figure out from anything you've said what the failure mode
>> is or how you think it should be affected.
>
> At least you should be able to see the related bug report at:
>
> https://bugzilla.redhat.com/show_bug.cgi?id=446200
>
> I'm getting Access Denied. :(

ok , I just got permit to share the test case here..  Please check out
the attachment.
 1. tar jxvf testpro.tar.bz2
       testpro/test1.c
               test2.sh
2.cd testpro
3.gcc -o test1 test1.c
4.strace -f -o log.txt ./test1

hope you can reproduce the problem.

Thanks,
Luming

Download attachment "testpro.tar.bz2" of type "application/x-bzip2" (694 bytes)