linux-kernel - Re: 2.6.36-rc5-mmotm0928 BUG while trying to ptrace a process

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Date:	Mon, 18 Oct 2010 10:28:43 +0900 (JST)
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	fweisbec <fweisbec@...il.com>
Cc:	kosaki.motohiro@...fujitsu.com, Valdis.Kletnieks@...edu,
	Andrew Morton <akpm@...ux-foundation.org>,
	Paul Mackerras <paulus@...ba.org>, Ingo Molnar <mingo@...e.hu>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	linux-kernel@...r.kernel.org, Peter Zijlstra <peterz@...radead.org>
Subject: Re: 2.6.36-rc5-mmotm0928 BUG while trying to ptrace a process

> On Wed, 2010-10-06 at 05:32 -0400, Valdis.Kletnieks@...edu wrote:
> > Dell Latitude E6500,  Intel Core2 Duo P8700 CPU.
> > 
> > Have seen this three times now while trying to attach gdb to a hung Firefox
> > process.
> > 
> > [20669.480674] BUG: unable to handle kernel NULL pointer dereference at 0000000000000100
> > [20669.480682] IP: [<ffffffff810b8275>] __reserve_bp_slot+0x56/0x17d
> 
> Known issue I think, Frederic was looking into curing this.
> 
> Frederic, what's the current status of that?

mmotm1014 seems still have this issue. Frederic, can you please tell us
current status if you are tracking this issue?




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