linux-kernel - Re: [tip:x86/urgent] x86/mce: Fix CMCI preemption bugs

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Message-ID: <20140417222028.GD27852@pd.tnic>
Date:	Fri, 18 Apr 2014 00:20:28 +0200
From:	Borislav Petkov <bp@...en8.de>
To:	Owen Kibel <qmewlo@...il.com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Josh Boyer <jwboyer@...oraproject.org>,
	"Luck, Tony" <tony.luck@...el.com>,
	Peter Zijlstra <peterz@...radead.org>,
	"mingo@...nel.org" <mingo@...nel.org>,
	"hpa@...or.com" <hpa@...or.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"atodorov@...hat.com" <atodorov@...hat.com>,
	"gong.chen@...ux.intel.com" <gong.chen@...ux.intel.com>,
	"tglx@...utronix.de" <tglx@...utronix.de>,
	"linux-tip-commits@...r.kernel.org" 
	<linux-tip-commits@...r.kernel.org>
Subject: Re: [tip:x86/urgent] x86/mce: Fix CMCI preemption bugs

On Thu, Apr 17, 2014 at 11:30:12PM +0200, Borislav Petkov wrote:
> This is most likely unrelated and is caused by the preemption checks
> added to __this_cpu_* in 188a81409ff7. If you'd like to debug this
> further, please send a full dmesg:
> 
> dmesg > dmesg.log
> 
> Privately is fine too.

Ok, thanks for the dmesg. Replying to the thread with everybody:

The splat Owen is seeing is the same as this one at the beginning of
this thread here:

http://lkml.kernel.org/r/8761m7lm3j.fsf@canonical.com

which has a viable fix. Btw, those two splats happen on HP notebooks.

Ok, good, I think we're all solved. Phew :-)

Thanks to all for their help.

-- 
Regards/Gruss,
    Boris.

Sent from a fat crate under my desk. Formatting is fine.
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