From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753377AbaFHDd5 (ORCPT ); Sat, 7 Jun 2014 23:33:57 -0400 Received: from userp1040.oracle.com ([156.151.31.81]:24980 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753187AbaFHDd4 (ORCPT ); Sat, 7 Jun 2014 23:33:56 -0400 Message-ID: <5393D995.8010805@oracle.com> Date: Sat, 07 Jun 2014 23:33:41 -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: "linux-mm@kvack.org" CC: Andrew Morton , Konstantin Khlebnikov , suresh.b.siddha@intel.com, Ingo Molnar , "H. Peter Anvin" , LKML , Dave Jones Subject: Re: mm,x86: warning at arch/x86/mm/pat.c:781 untrack_pfn+0x65/0xb0() References: <5347E4FB.2090705@oracle.com> In-Reply-To: <5347E4FB.2090705@oracle.com> 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 04/11/2014 08:50 AM, 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: Ping? Still happening (rarely on -next): [ 5818.038245] WARNING: CPU: 4 PID: 22726 at arch/x86/mm/pat.c:781 untrack_pfn+0x65/0xb0() [ 5818.044203] Modules linked in: [ 5818.045172] CPU: 4 PID: 22726 Comm: trinity-c239 Tainted: G W 3.15.0-rc8-next-20140606-sasha-00021-ga9d3a0b-dirty #596 [ 5818.048317] 0000000000000009 ffff8800024d3be8 ffffffff9e50fe6b 0000000000000001 [ 5818.050516] 0000000000000000 ffff8800024d3c28 ffffffff9b15f96c ffff8800024d3c38 [ 5818.052567] ffff88000203f400 0000000000000000 ffff8800024d3d68 ffff8800024d3d68 [ 5818.053785] Call Trace: [ 5818.054483] dump_stack (lib/dump_stack.c:52) [ 5818.055586] warn_slowpath_common (kernel/panic.c:430) [ 5818.056763] warn_slowpath_null (kernel/panic.c:465) [ 5818.057789] untrack_pfn (arch/x86/mm/pat.c:781 (discriminator 3)) [ 5818.059412] unmap_single_vma (mm/memory.c:1327) [ 5818.061530] ? pagevec_lru_move_fn (include/linux/pagevec.h:44 mm/swap.c:435) [ 5818.063412] unmap_vmas (mm/memory.c:1377 (discriminator 1)) [ 5818.064610] unmap_region (mm/mmap.c:2363 (discriminator 3)) [ 5818.065453] ? validate_mm_rb (mm/mmap.c:404) [ 5818.066422] ? vma_rb_erase (mm/mmap.c:449 include/linux/rbtree_augmented.h:219 include/linux/rbtree_augmented.h:227 mm/mmap.c:488) [ 5818.067316] do_munmap (mm/mmap.c:3359 mm/mmap.c:2561) [ 5818.068126] move_vma (mm/mremap.c:313) [ 5818.069000] SyS_mremap (mm/mremap.c:446 mm/mremap.c:508 mm/mremap.c:477) [ 5818.069839] tracesys (arch/x86/kernel/entry_64.S:542) Thanks, Sasha