From: Frederic Weisbecker <fweisbec@gmail.com>
To: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Valdis.Kletnieks@vt.edu,
Andrew Morton <akpm@linux-foundation.org>,
Paul Mackerras <paulus@samba.org>, Ingo Molnar <mingo@elte.hu>,
Arnaldo Carvalho de Melo <acme@redhat.com>,
linux-kernel@vger.kernel.org,
Peter Zijlstra <peterz@infradead.org>
Subject: Re: 2.6.36-rc5-mmotm0928 BUG while trying to ptrace a process
Date: Mon, 18 Oct 2010 04:04:30 +0200 [thread overview]
Message-ID: <20101018020429.GB21722@nowhere> (raw)
In-Reply-To: <20101018104259.3AE5.A69D9226@jp.fujitsu.com>
On Mon, Oct 18, 2010 at 11:01:18AM +0900, KOSAKI Motohiro wrote:
> > On Mon, Oct 18, 2010 at 10:28:43AM +0900, KOSAKI Motohiro wrote:
> > > > On Wed, 2010-10-06 at 05:32 -0400, Valdis.Kletnieks@vt.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?
> >
> >
> > Peter has a pending queue for .37 which includes:
> >
> > [RFC][PATCH 3/7] perf, hw_breakpoint: Fix crash in hw_breakpoint creation
> >
> > This patch should fix the issue (it depends on others in the queue).
> >
> > What is mmotm1014 BTW? Because you should see this bug only in a tree
> > that has tip:/perf/core merged inside, like linux-next.
>
> mmotm is (usually) linux-next + akpm fixes. if a change of tip is exported
> to linux-next, it is visible from mmotm tester :)
Ok, thanks for the info :)
prev parent reply other threads:[~2010-10-18 2:04 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-06 9:32 2.6.36-rc5-mmotm0928 BUG while trying to ptrace a process Valdis.Kletnieks
2010-10-06 13:45 ` Peter Zijlstra
2010-10-18 1:28 ` KOSAKI Motohiro
2010-10-18 1:36 ` Frederic Weisbecker
2010-10-18 2:01 ` KOSAKI Motohiro
2010-10-18 2:04 ` Frederic Weisbecker [this message]
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