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Date: Sun, 10 Oct 2010 10:20:19 +0200 (CEST)
From: Thomas Gleixner <tglx@...utronix.de>
To: Yinghai Lu <yinghai@...nel.org>
cc: Grant Likely <grant.likely@...retlab.ca>,
Russell King - ARM Linux <linux@....linux.org.uk>,
LKML <linux-kernel@...r.kernel.org>, linux-arch@...r.kernel.org,
Linus Torvalds <torvalds@...l.org>,
Andrew Morton <akpm@...ux-foundation.org>, x86@...nel.org,
Peter Zijlstra <peterz@...radead.org>,
Benjamin Herrenschmidt <benh@...nel.crashing.org>,
Paul Mundt <lethal@...ux-sh.org>,
David Woodhouse <dwmw2@...radead.org>,
Jesse Barnes <jbarnes@...tuousgeek.org>,
"Eric W. Biederman" <ebiederm@...ssion.com>
Subject: Re: [patch 00/47] Sparse irq rework
On Sat, 9 Oct 2010, Yinghai Lu wrote:
> On 10/09/2010 05:12 AM, Thomas Gleixner wrote:
> > On Sat, 9 Oct 2010, Yinghai Lu wrote:
> >> On 10/08/2010 11:10 PM, Thomas Gleixner wrote:
> >>>> [ 59.449366] IP: [<ffffffff8147d715>] acpi_pci_irq_find_prt_entry+0x85/0xb1
> >>>
> >>> I can hardly see how this is related to the irq work.
> >>>
> >>>> [ 71.076886] Pid: 1, comm: swapper Tainted: G W 2.6.36-rc7-tip-yh-01944-ge8a4c5f-dirty #171 /Sun Fire x4800
> >>>> [ 71.096947] RIP: 0010:[<ffffffff8141e232>] [<ffffffff8141e232>] strcmp+0x4/0x21
> >>>
> >>> Ditto.
> >>
> >> don't know.
> >>
> >> but without merging your branch, those problems don't come out.
> >>
> >> only thing i can think about that you real free irq code could
> >> stress or expose other subsystem's bug etc.
> >
> > The first crash is in early boot and that code just fiddles with acpi
> > internal stuff.
> >
>
> Need following patch. Please fold it into corresponding commit.
Thanks for spotting this !
tglx
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