linux-kernel - Re: [PATCH] x86, FPU: Fix FPU initialization

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Message-ID: <20130415100858.GB18024@gmail.com>
Date:	Mon, 15 Apr 2013 12:08:58 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	Borislav Petkov <bp@...en8.de>
Cc:	"H. Peter Anvin" <hpa@...or.com>, X86 ML <x86@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>, Borislav Petkov <bp@...e.de>
Subject: Re: [PATCH] x86, FPU: Fix FPU initialization


* Borislav Petkov <bp@...en8.de> wrote:

> And 0x00003f76 + 0x104 gives exactly 0x0000407a which is the address at
> which we #PF:
> 
> [   15.921486] BUG: unable to handle kernel paging request at 0000407a
> [   15.921486] IP: [<41071ab0>] __lock_acquire.isra.19+0x3e0/0xb00
> 
> More hmmm...

It gave me the impression of memory corruption - but impressions can deceive ;-)

Anyway, not sure I can test/bisect it this week - merge window preparations and 
all that.

Thanks,

	Ingo
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