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[134.134.136.20]) by mx.google.com with ESMTPS id s201si4557870pgs.522.2019.05.30.18.43.16 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 30 May 2019 18:43:16 -0700 (PDT) Received-SPF: pass (google.com: domain of ying.huang@intel.com designates 134.134.136.20 as permitted sender) client-ip=134.134.136.20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of ying.huang@intel.com designates 134.134.136.20 as permitted sender) smtp.mailfrom=ying.huang@intel.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=intel.com X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga101.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 30 May 2019 18:43:15 -0700 X-ExtLoop1: 1 Received: from yhuang-dev.sh.intel.com (HELO yhuang-dev) ([10.239.159.29]) by fmsmga001.fm.intel.com with ESMTP; 30 May 2019 18:43:14 -0700 From: "Huang\, Ying" To: Mike Kravetz Cc: , , , , , , , , Subject: Re: mmotm 2019-05-29-20-52 uploaded References: <20190530035339.hJr4GziBa%akpm@linux-foundation.org> Date: Fri, 31 May 2019 09:43:13 +0800 In-Reply-To: (Mike Kravetz's message of "Thu, 30 May 2019 13:54:07 -0700") Message-ID: <87lfyn5rgu.fsf@yhuang-dev.intel.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=ascii X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Hi, Mike, Mike Kravetz 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