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Date:   Tue, 21 Aug 2018 13:30:20 -0700
From:   Yang Shi <yang.shi@...ux.alibaba.com>
To:     David Woodhouse <dwmw2@...radead.org>, gregkh@...uxfoundation.org,
        ak@...ux.intel.com, tglx@...utronix.de, dave.hansen@...el.com
Cc:     stable@...r.kernel.org, x86@...nel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [BUG] madvise05 leads kernel panic on 4.9.122



On 8/21/18 11:43 AM, David Woodhouse wrote:
> On Tue, 2018-08-21 at 11:37 -0700, Yang Shi wrote:
>> I just ran some regression test on stable 4.9.122 with LTP. madvise05
>> triggers the below kernel panic:

Thanks, David. It works. A silly question, I don't get why this commit 
could solve this issue, it looks just like a code refactor. Just because 
it changed how to get pfn from page table entries? And, this may cause 
some mismatch on 4.9 stable without it?


> Please could you try 4.9.123-rc1, specifically this commit:
> https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git/commit/?h=linux-4.9.y&id=64fc89a2702e0e70e34ced0a270ef556242d5f26

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