linux-kernel - Re: [PATCH] Sometimes, there is OOPS happened when we use oprofile.

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Message-ID: <509197D2.6000503@zytor.com>
Date:	Wed, 31 Oct 2012 14:27:46 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Robert Richter <rric@...nel.org>
CC:	"Zhang, Jun" <jun.zhang@...el.com>, Ingo Molnar <mingo@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	"x86@...nel.org" <x86@...nel.org>,
	"oprofile-list@...ts.sf.net" <oprofile-list@...ts.sf.net>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] Sometimes, there is OOPS happened when we use oprofile.

On 10/31/2012 02:05 PM, Robert Richter wrote:
> Jun,
>
> On 29.10.12 02:33:54, Zhang, Jun wrote:
>> Sometimes, there is OOPS happened when we use oprofile. next
>> is the call stack. From call stack, we find in
>> call_on_stack if there is a nmi interrupt between "xchgl
>> %%ebx,%%esp" and "call *%%edi", system will OOPS.
>
> this should be related and fixed with:
>
>   https://lkml.org/lkml/2012/9/12/269
>
> Ingo, HPA,
>
> please apply the fix of kernel_stack_pointer().
>

Thanks for the reminder.  Ingo bounced this one to me for review while I 
was away and it fell between the cracks.

	-hpa
-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

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