Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761016AbYBRNCr (ORCPT ); Mon, 18 Feb 2008 08:02:47 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1760639AbYBRNB0 (ORCPT ); Mon, 18 Feb 2008 08:01:26 -0500 Received: from smtp2.linux-foundation.org ([207.189.120.14]:60003 "EHLO smtp2.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760307AbYBRNBY (ORCPT ); Mon, 18 Feb 2008 08:01:24 -0500 Date: Mon, 18 Feb 2008 04:59:54 -0800 From: Andrew Morton To: Kamalesh Babulal Cc: Linux Kernel Mailing List , linux-ext4@vger.kernel.org, Andy Whitcroft , Balbir Singh , Christoph Lameter , linux-mm@kvack.org Subject: Re: [BUG] Linux 2.6.25-rc2 - Kernel Ooops while running dbench Message-Id: <20080218045954.50503fb1.akpm@linux-foundation.org> In-Reply-To: <47B6784E.2090401@linux.vnet.ibm.com> References: <47B6784E.2090401@linux.vnet.ibm.com> X-Mailer: Sylpheed 2.4.7 (GTK+ 2.12.1; x86_64-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2345 Lines: 45 On Sat, 16 Feb 2008 11:14:46 +0530 Kamalesh Babulal wrote: > The 2.6.25-rc2 kernel oopses while running dbench on ext3 filesystem > mounted with mount -o data=writeback,nobh option on the x86_64 box > > BUG: unable to handle kernel NULL pointer dereference at 0000000000000000 > IP: [] kmem_cache_alloc+0x3a/0x6c > PGD 1f6860067 PUD 1f5d64067 PMD 0 > Oops: 0000 [1] SMP > CPU 3 > Modules linked in: > Pid: 4271, comm: dbench Not tainted 2.6.25-rc2-autotest #1 > RIP: 0010:[] [] kmem_cache_alloc+0x3a/0x6c > RSP: 0000:ffff8101fb041dc8 EFLAGS: 00010246 > RAX: 0000000000000000 RBX: ffff810180033c00 RCX: ffffffff8027b269 > RDX: 0000000000000000 RSI: 00000000000080d0 RDI: ffffffff80632d70 > RBP: 00000000000080d0 R08: 0000000000000001 R09: 0000000000000000 > R10: ffff8101feb36e50 R11: 0000000000000190 R12: 0000000000000001 > R13: 0000000000000000 R14: ffff8101f8f38000 R15: 00000000ffffff9c > FS: 0000000000000000(0000) GS:ffff8101fff0f000(0063) knlGS:00000000f7e41460 > CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 > CR2: 0000000000000000 CR3: 00000001f5620000 CR4: 00000000000006e0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 > Process dbench (pid: 4271, threadinfo ffff8101fb040000, task ffff8101fb180000) > Stack: 0000000000000001 ffff8101fb041ea8 0000000000000001 ffffffff8027b269 > ffff8101fb041ea8 ffffffff80281fe8 0000000000000001 0000000000000000 > ffff8101fb041ea8 00000000ffffff9c 000000000000000b 0000000000000001 > Call Trace: > [] get_empty_filp+0x55/0xf9 > [] __path_lookup_intent_open+0x22/0x8f > [] open_namei+0x86/0x5a7 > [] vfs_stat_fd+0x3c/0x4a > [] do_filp_open+0x1c/0x3d > [] get_unused_fd_flags+0x79/0x111 > [] do_sys_open+0x46/0xca > [] ia32_sysret+0x0/0xa > Looks to me like we broke slab. Christoph is offline until the 27th.. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/