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From:   "Huang\, Ying" <ying.huang@intel.com>
To:     Mike Kravetz <mike.kravetz@oracle.com>
Cc:     <akpm@linux-foundation.org>, <broonie@kernel.org>,
        <linux-fsdevel@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
        <linux-mm@kvack.org>, <linux-next@vger.kernel.org>,
        <mhocko@suse.cz>, <mm-commits@vger.kernel.org>,
        <sfr@canb.auug.org.au>
Subject: Re: mmotm 2019-05-29-20-52 uploaded
References: <20190530035339.hJr4GziBa%akpm@linux-foundation.org>
        <fac5f029-ef20-282e-b0d2-2357589839e8@oracle.com>
Date:   Fri, 31 May 2019 09:43:13 +0800
In-Reply-To: <fac5f029-ef20-282e-b0d2-2357589839e8@oracle.com> (Mike Kravetz's
        message of "Thu, 30 May 2019 13:54:07 -0700")
Message-ID: <87lfyn5rgu.fsf@yhuang-dev.intel.com>
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Hi, Mike,

Mike Kravetz <mike.kravetz@oracle.com> writes:

> On 5/29/19 8:53 PM, akpm@linux-foundation.org wrote:
>> The mm-of-the-moment snapshot 2019-05-29-20-52 has been uploaded to
>> 
>>    http://www.ozlabs.org/~akpm/mmotm/
>> 
>
> With this kernel, I seem to get many messages such as:
>
> get_swap_device: Bad swap file entry 1400000000000001
>
> It would seem to be related to commit 3e2c19f9bef7e
>> * mm-swap-fix-race-between-swapoff-and-some-swap-operations.patch

Hi, Mike,

Thanks for reporting!  I find an issue in my patch and I can reproduce
your problem now.  The reason is total_swapcache_pages() will call
get_swap_device() for invalid swap device.  So we need to find a way to
silence the warning.  I will post a fix ASAP.

Best Regards,
Huang, Ying