From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752607AbaEWNy4 (ORCPT ); Fri, 23 May 2014 09:54:56 -0400 Received: from aserp1040.oracle.com ([141.146.126.69]:51088 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751822AbaEWNyz (ORCPT ); Fri, 23 May 2014 09:54:55 -0400 Message-ID: <537F5320.6070402@oracle.com> Date: Fri, 23 May 2014 09:54:40 -0400 From: Sasha Levin User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.4.0 MIME-Version: 1.0 To: "Kirill A. Shutemov" CC: Dave Jones , Linux Kernel , linux-mm@kvack.org, Linus Torvalds Subject: Re: 3.15.0-rc6: VM_BUG_ON_PAGE(PageTail(page), page) References: <20140522135828.GA24879@redhat.com> <537ECCDB.8080009@oracle.com> <20140523091631.GA4400@node.dhcp.inet.fi> In-Reply-To: <20140523091631.GA4400@node.dhcp.inet.fi> X-Enigmail-Version: 1.6 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Source-IP: ucsinet22.oracle.com [156.151.31.94] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 05/23/2014 05:16 AM, Kirill A. Shutemov wrote: > On Fri, May 23, 2014 at 12:21:47AM -0400, Sasha Levin wrote: >> On 05/22/2014 09:58 AM, Dave Jones wrote: >>> Not sure if Sasha has already reported this on -next (It's getting hard >>> to keep track of all the VM bugs he's been finding), but I hit this overnight >>> on .15-rc6. First time I've seen this one. >> >> Unfortunately I had to disable transhuge/hugetlb in my testing .config since >> the open issues in -next get hit pretty often, and were unfixed for a while >> now. > > What THP-related is not fixed by now? collapse hung? what else? Besides the collapse hang, we have this: https://lkml.org/lkml/2013/3/29/103 . I know it's not a "real" bug, but DEBUG_PAGEALLOC misbehaving, but it's still something that makes testing difficult. Thanks, Sasha