linux-kernel - Re: "swap_free: Bad swap file entry" and "BUG: Bad page map in process" but no swap configured

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Date:   Mon, 20 Nov 2017 17:07:08 +0800
From:   Huaitong Han <oenhan@...il.com>
To:     lkml <linux-kernel@...r.kernel.org>
Cc:     linux-mm@...ck.org, Chris Friesen <chris.friesen@...driver.com>
Subject: Re: "swap_free: Bad swap file entry" and "BUG: Bad page map in
 process" but no swap configured

Hi, Chris

I have met the same issue too, did you have found out the root cause ?

Thanks a lot.

Huaitong Han


2016-10-12 0:02 GMT+08:00 Chris Friesen <chris.friesen@...driver.com>:
> On 10/08/2016 02:05 AM, Hillf Danton wrote:
>>
>> On Friday, October 07, 2016 5:01 AM Chris Friesen
>>>
>>>
>>> I have Linux host running as a kvm hypervisor.  It's running CentOS.  (So
>>> the
>>> kernel is based on 3.10 but with loads of stuff backported by RedHat.)  I
>>> realize this is not a mainline kernel, but I was wondering if anyone is
>>> aware of
>>> similar issues that had been fixed in mainline.
>>>
>> Hey, dunno if you're looking for commit
>>         6dec97dc929 ("mm: move_ptes -- Set soft dirty bit depending on pte
>> type")
>> Hillf
>
>
> CONFIG_MEM_SOFT_DIRTY doesn't exist in our kernel so I don't think this is
> the issue.  Thanks for the suggestion though.
>
> Chris