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

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Message-ID: <20121031210522.GB4386@ivy.homofaber>
Date:	Wed, 31 Oct 2012 22:05:22 +0100
From:	Robert Richter <rric@...nel.org>
To:	"Zhang, Jun" <jun.zhang@...el.com>, Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>
Cc:	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.

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,

-Robert
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