From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Huang\, Ying" Subject: Re: mmotm 2019-05-29-20-52 uploaded Date: Fri, 31 May 2019 09:43:13 +0800 Message-ID: <87lfyn5rgu.fsf@yhuang-dev.intel.com> References: <20190530035339.hJr4GziBa%akpm@linux-foundation.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ascii Return-path: In-Reply-To: (Mike Kravetz's message of "Thu, 30 May 2019 13:54:07 -0700") Sender: linux-kernel-owner@vger.kernel.org To: Mike Kravetz 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 List-Id: linux-next.vger.kernel.org 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