From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail138.messagelabs.com (mail138.messagelabs.com [216.82.249.35]) by kanga.kvack.org (Postfix) with SMTP id 4FE4B620002 for ; Fri, 25 Dec 2009 00:14:39 -0500 (EST) Received: from m1.gw.fujitsu.co.jp ([10.0.50.71]) by fgwmail7.fujitsu.co.jp (Fujitsu Gateway) with ESMTP id nBP5Ea7S004506 for (envelope-from kosaki.motohiro@jp.fujitsu.com); Fri, 25 Dec 2009 14:14:36 +0900 Received: from smail (m1 [127.0.0.1]) by outgoing.m1.gw.fujitsu.co.jp (Postfix) with ESMTP id 6154445DE4E for ; Fri, 25 Dec 2009 14:14:36 +0900 (JST) Received: from s1.gw.fujitsu.co.jp (s1.gw.fujitsu.co.jp [10.0.50.91]) by m1.gw.fujitsu.co.jp (Postfix) with ESMTP id 3B30C45DE4F for ; Fri, 25 Dec 2009 14:14:36 +0900 (JST) Received: from s1.gw.fujitsu.co.jp (localhost.localdomain [127.0.0.1]) by s1.gw.fujitsu.co.jp (Postfix) with ESMTP id 19B98E38001 for ; Fri, 25 Dec 2009 14:14:36 +0900 (JST) Received: from ml14.s.css.fujitsu.com (ml14.s.css.fujitsu.com [10.249.87.104]) by s1.gw.fujitsu.co.jp (Postfix) with ESMTP id BBABD1DB803A for ; Fri, 25 Dec 2009 14:14:35 +0900 (JST) From: KOSAKI Motohiro Subject: Re: 2.6.28.10 - kernel BUG at mm/rmap.c:725 In-Reply-To: <2375c9f90912242056h29f20dc5rb3f891c732e0d362@mail.gmail.com> References: <2375c9f90912242056h29f20dc5rb3f891c732e0d362@mail.gmail.com> Message-Id: <20091225135840.AA81.A69D9226@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit Date: Fri, 25 Dec 2009 14:14:34 +0900 (JST) Sender: owner-linux-mm@kvack.org To: Americo Wang Cc: kosaki.motohiro@jp.fujitsu.com, CoolCold , Linux kernel , linux-mm@kvack.org, hugh.dickins@tiscali.co.uk List-ID: > On Thu, Dec 24, 2009 at 7:09 PM, CoolCold wrote: > > 3 days ago LA on server become very high and it was working very > > strange, so was rebooted. There are such entryies in log about kernel > > bug - kernel BUG at mm/rmap.c:725! . Googling didn't provide me with > > exact answer is it bug or hardware problems, something similar was > > here https://bugs.launchpad.net/ubuntu/+source/linux/+bug/252977/comments/56 > > In general this server had number of unexpected stalls during several > > months, but there is no ipkvm, so i can't say where something on > > console or not. Hope you will help. > > > > Kernel version is 2.6.28.10 , self-builded. System - Debian stable/testing. > > > > Please reply to me directly, cuz i'm not subsribed to list. > > > > Dec 21 22:05:01 gamma kernel: Eeek! page_mapcount(page) went negative! (-1) > > Dec 21 22:05:01 gamma kernel: A page pfn = 1f2c81 > > Dec 21 22:05:01 gamma kernel: A page->flags = 20000000008007c PG_referenced | PG_uptodate | PG_dirty | PG_lru | PG_active | PG_swapbacked > > Dec 21 22:05:01 gamma kernel: A page->count = 2 > > Dec 21 22:05:01 gamma kernel: A page->mapping = ffff8801fd870b58 > > Dec 21 22:05:01 gamma kernel: A vma->vm_ops = 0xffffffff80535020 > > Dec 21 22:05:01 gamma kernel: A vma->vm_ops->fault = shmem_fault+0x0/0x69 > > Dec 21 22:05:01 gamma kernel: A vma->vm_file->f_op->mmap = shmem_mmap+0x0/0x2e > > Dec 21 22:05:01 gamma kernel: ------------[ cut here ]------------ > > Dec 21 22:05:01 gamma kernel: kernel BUG at mm/rmap.c:725! > > Hey, > > commit 3dc147414cc already removed this BUG(), not sure > how serious this is... Very serious. but We don't seen this bug for very long time. thus I bet it's hardware corruption. > > Adding mm people into Cc. > > Thanks. -- 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