linux-kernel - Re: [LKP] [lkp-robot] [confidence: ] 7757d607c6 [ 56.996267] BUG: Bad page map in process trinity-c2 pte:0d755065 pmd:0d55b067

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Message-ID: <20180731072725.ecbhfm6642xxao5z@suse.de>
Date:   Tue, 31 Jul 2018 09:27:25 +0200
From:   Joerg Roedel <jroedel@...e.de>
To:     Ye Xiaolong <xiaolong.ye@...el.com>
Cc:     kernel test robot <lkp@...el.com>,
        Thomas Gleixner <tglx@...utronix.de>, LKP <lkp@...org>,
        linux-security-module@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [LKP] [lkp-robot] [confidence: ] 7757d607c6 [ 56.996267] BUG:
 Bad page map in process trinity-c2 pte:0d755065 pmd:0d55b067

On Tue, Jul 31, 2018 at 10:00:36AM +0800, Ye Xiaolong wrote:
> On 07/27, Joerg Roedel wrote:
> >May I ask how this was bisected? I found it very hard to reproduce, it
> >triggered less then two times a day with the attached reproducer. Given
> >that the report came pretty fast after the patches landed in
> >tip/x86/pti, I guess it triggered a lot faster in your testing.
> >
> 
> There is higher reproduce rate (2/310) in 0day environment, and we got dozens
> of qemu running simultaneously for bisection thus can get bisect result promptly.

Ah okay, that makes sense. Thanks for your answer and thanks for the
report again.


Regards,

	Joerg