From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751812AbaH3O3S (ORCPT ); Sat, 30 Aug 2014 10:29:18 -0400 Received: from aserp1040.oracle.com ([141.146.126.69]:20169 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751577AbaH3O3R (ORCPT ); Sat, 30 Aug 2014 10:29:17 -0400 Message-ID: <5401DFA7.6080201@oracle.com> Date: Sat, 30 Aug 2014 10:28:55 -0400 From: Sasha Levin User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.0 MIME-Version: 1.0 To: "Kirill A. Shutemov" CC: Andrew Morton , Naoya Horiguchi , Joonsoo Kim , Hugh Dickins , Johannes Weiner , Dave Jones , "linux-mm@kvack.org" , LKML Subject: Re: mm: kernel BUG at mm/rmap.c:530 References: <53F487EB.7070703@oracle.com> <20140820140247.C729CE00A3@blue.fi.intel.com> In-Reply-To: <20140820140247.C729CE00A3@blue.fi.intel.com> Content-Type: text/plain; charset=windows-1252 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 08/20/2014 10:02 AM, Kirill A. Shutemov wrote: > Sasha Levin wrote: >> > Hi all, >> > >> > While fuzzing with trinity inside a KVM tools guest running the latest -next >> > kernel, I've stumbled on the following spew: >> > >> > [ 2581.180086] kernel BUG at mm/rmap.c:530! > Page is mapped where it shouldn't be. Or vma/struct page/pgtable is corrupted. > Basically, I have no idea what happend :-P > > We really should dump page and vma info there. It's strange we don't have > dump_vma() helper yet. > Okay, so the dump_vma() helper shows: [ 736.842506] vma ffff8808436fdc00 start (null) end (null) [ 736.842506] next (null) prev (null) mm (null) [ 736.842506] prot 0 anon_vma (null) vm_ops (null) [ 736.842506] pgoff 0 file (null) private_data (null) [ 736.846670] flags: 0x0( Thanks, Sasha From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pd0-f175.google.com (mail-pd0-f175.google.com [209.85.192.175]) by kanga.kvack.org (Postfix) with ESMTP id 9624E6B0035 for ; Sat, 30 Aug 2014 10:34:45 -0400 (EDT) Received: by mail-pd0-f175.google.com with SMTP id ft15so2509908pdb.34 for ; Sat, 30 Aug 2014 07:34:45 -0700 (PDT) Received: from aserp1040.oracle.com (aserp1040.oracle.com. [141.146.126.69]) by mx.google.com with ESMTPS id jd10si4513043pbd.168.2014.08.30.07.34.43 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Sat, 30 Aug 2014 07:34:44 -0700 (PDT) Message-ID: <5401DFA7.6080201@oracle.com> Date: Sat, 30 Aug 2014 10:28:55 -0400 From: Sasha Levin MIME-Version: 1.0 Subject: Re: mm: kernel BUG at mm/rmap.c:530 References: <53F487EB.7070703@oracle.com> <20140820140247.C729CE00A3@blue.fi.intel.com> In-Reply-To: <20140820140247.C729CE00A3@blue.fi.intel.com> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: "Kirill A. Shutemov" Cc: Andrew Morton , Naoya Horiguchi , Joonsoo Kim , Hugh Dickins , Johannes Weiner , Dave Jones , "linux-mm@kvack.org" , LKML On 08/20/2014 10:02 AM, Kirill A. Shutemov wrote: > Sasha Levin wrote: >> > Hi all, >> > >> > While fuzzing with trinity inside a KVM tools guest running the latest -next >> > kernel, I've stumbled on the following spew: >> > >> > [ 2581.180086] kernel BUG at mm/rmap.c:530! > Page is mapped where it shouldn't be. Or vma/struct page/pgtable is corrupted. > Basically, I have no idea what happend :-P > > We really should dump page and vma info there. It's strange we don't have > dump_vma() helper yet. > Okay, so the dump_vma() helper shows: [ 736.842506] vma ffff8808436fdc00 start (null) end (null) [ 736.842506] next (null) prev (null) mm (null) [ 736.842506] prot 0 anon_vma (null) vm_ops (null) [ 736.842506] pgoff 0 file (null) private_data (null) [ 736.846670] flags: 0x0( Thanks, Sasha -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org