linux-kernel - Re: latest -git: BUG: unable to handle kernel paging request (numaq_tsc

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Date:	Wed, 20 Aug 2008 17:40:29 +0200
From:	"Vegard Nossum" <vegard.nossum@...il.com>
To:	"Yinghai Lu" <yhlu.kernel@...il.com>,
	"the arch/x86 maintainers" <x86@...nel.org>
Cc:	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>
Subject: Re: latest -git: BUG: unable to handle kernel paging request (numaq_tsc_disable)

On Wed, Aug 20, 2008 at 5:28 PM, Vegard Nossum <vegard.nossum@...il.com> wrote:
> Hi,
>
> This actually hardlocked my machine and I had to add an extra patch to
> get any output at all. Base version is latest git, commit
> 1fca25427482387689fa27594c992a961d98768f.
>

...

> Booting processor 1/1 ip 6000
> <1>BUG: unable to handle kernel paging request at c08a45f0
> <1>IP: [<c08a45f0>] numaq_tsc_disable+0x0/0x40
> <0> [<c0678676>] ? init_intel+0x196/0x360

Seems to be a section mismatch; init_intel() is __cpuinit while
numaq_tsc_disable() is __init. Seems to be introduced in:

commit 64898a8bad8c94ad7a4bd5cc86b66edfbb081f4a
Author: Yinghai Lu <yhlu.kernel@...il.com>
Date:   Sat Jul 19 18:01:16 2008 -0700

    x86: extend and use x86_quirks to clean up NUMAQ code


Vegard

-- 
"The animistic metaphor of the bug that maliciously sneaked in while
the programmer was not looking is intellectually dishonest as it
disguises that the error is the programmer's own creation."
	-- E. W. Dijkstra, EWD1036
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