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Date:	Thu, 19 Mar 2015 14:47:12 +0100
From:	Takashi Iwai <tiwai@...e.de>
To:	Denys Vlasenko <vda.linux@...glemail.com>
Cc:	Denys Vlasenko <dvlasenk@...hat.com>,
	Andy Lutomirski <luto@...capital.net>,
	Jiri Kosina <jkosina@...e.cz>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Stefan Seyfried <stefan.seyfried@...glemail.com>,
	X86 ML <x86@...nel.org>, LKML <linux-kernel@...r.kernel.org>,
	Tejun Heo <tj@...nel.org>
Subject: Re: PANIC: double fault, error_code: 0x0 in 4.0.0-rc3-2, kvm related?

At Thu, 19 Mar 2015 13:48:56 +0100,
Denys Vlasenko wrote:
> 
> Having no more ideas at the moment, here is a tarball of 13 patches
> of commits touching entry_64.S up to 4.0.0-rc1.
> 
> x0001.patch is the latest, x0015.patch is the oldest.
> 
> Patches 0003 and 0008 are not there since 0003 is empty merge patch
> and 0008 does some PCI fixup.
> 
> If this breakage is recent, it ought to be one of these.
> Most of them do some non-trivial surgery.
> 
> Even though I did not spot anything suspicious in them,
> entry.S is notorious for subtle breakage.
> 
> Try reverting them in sequence starting from x0001.patch
> and see reverting which one makes crash disappear.

OK, I'm going to check these git series.


Takashi
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