Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759512AbYGPPWv (ORCPT ); Wed, 16 Jul 2008 11:22:51 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1760142AbYGPPUa (ORCPT ); Wed, 16 Jul 2008 11:20:30 -0400 Received: from mail.gmx.net ([213.165.64.20]:60716 "HELO mail.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1760100AbYGPPU2 (ORCPT ); Wed, 16 Jul 2008 11:20:28 -0400 X-Authenticated: #704063 X-Provags-ID: V01U2FsdGVkX1/9vAdvYUj9JPe4HZ60Um7bRpB+p7wm20SSJcmmXV B9TMdlD2UKvD0w Date: Wed, 16 Jul 2008 17:20:25 +0200 From: Eric Sesterhenn To: linux-kernel@vger.kernel.org Cc: adobriyan@gmail.com, akpm@linux-foundation.org Subject: /proc/*/pagemap oopses Message-ID: <20080716152025.GA23096@alice> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline X-Editor: Vim http://www.vim.org/ X-Info: http://www.snake-basket.de X-Operating-System: Linux/2.6.26 (x86_64) X-Uptime: 17:08:20 up 9:24, 1 user, load average: 0.04, 0.16, 0.43 User-Agent: Mutt/1.5.16 (2007-06-09) X-Y-GMX-Trusted: 0 X-FuHaFi: 0.53 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3754 Lines: 74 hi, with current -git a "cat /proc/4260/pagemap" gives me the following oops: [ 80.334016] general protection fault: fffc [#1] PREEMPT DEBUG_PAGEALLOC [ 80.334402] Modules linked in: [ 80.334654] [ 80.334765] Pid: 4744, comm: cat Not tainted (2.6.26-02962-g4515889 #5) [ 80.334902] EIP: 0060:[] EFLAGS: 00010206 CPU: 0 [ 80.335093] EIP is at 0xcb613f4b [ 80.335213] EAX: 96c26000 EBX: c013b06a ECX: 00400000 EDX: 00000000 [ 80.335347] ESI: cb613f44 EDI: fffffff2 EBP: c016d99c ESP: cb613f04 [ 80.335481] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 0068 [ 80.335672] Process cat (pid: 4744, ti=cb613000 task=cb59df40 task.ti=cb613000) [ 80.335810] Stack: ffffffb0 bfffffff c0000000 00000000 cbb67000 00400000 00000001 00000000 [ 80.336019] fffffff2 cb613f74 c01abab0 0828a000 0828a400 cb408380 cb400fe0 cb4a6c80 [ 80.336019] c013b06a cb613f60 c01ab441 00000000 c01ab3af cb4a6c80 cb613f60 0828a000 [ 80.336019] Call Trace: [ 80.336019] [] ? pagemap_read+0x16a/0x1e3 [ 80.336019] [] ? put_lock_stats+0xd/0x21 [ 80.336019] [] ? pagemap_pte_range+0x0/0xdc [ 80.336019] [] ? pagemap_pte_hole+0x0/0x37 [ 80.336019] [] ? pagemap_read+0x0/0x1e3 [ 80.336019] [] ? vfs_read+0x8a/0x106 [ 80.336019] [] ? sys_read+0x3b/0x60 [ 80.336019] [] ? sysenter_past_esp+0x6a/0xa5 [ 80.336019] ======================= [ 80.336019] Code: 00 00 00 00 f2 ff ff ff 74 3f 61 cb b0 ba 1a c0 00 a0 28 08 00 a4 28 08 80 83 40 cb e0 0f 40 cb 80 6c 4a cb 6a b0 13 c0 60 3f 61 41 b4 1a c0 00 00 00 00 af b3 1a c0 80 6c 4a cb 60 3f 61 cb [ 80.336019] EIP: [] 0xcb613f4b SS:ESP 0068:cb613f04 [ 80.455182] ---[ end trace e2b2d610b672cbbc ]--- doing this again gives a slightly different oops [ 156.814961] BUG: unable to handle kernel NULL pointer dereference at 00000002 [ 156.815288] IP: [<00000002>] [ 156.815482] *pde = 00000000 [ 156.815704] Oops: 0000 [#2] PREEMPT DEBUG_PAGEALLOC [ 156.816079] Modules linked in: [ 156.816255] [ 156.816368] Pid: 4765, comm: cat Tainted: G D (2.6.26-02962-g4515889 #5) [ 156.816608] EIP: 0060:[<00000002>] EFLAGS: 00010202 CPU: 0 [ 156.816739] EIP is at 0x2 [ 156.816854] EAX: cbb67000 EBX: 00000002 ECX: 00400000 EDX: 00000000 [ 156.816989] ESI: cb61ef44 EDI: fffffff2 EBP: cb61ef28 ESP: cb61ef00 [ 156.817183] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 0068 [ 156.817314] Process cat (pid: 4765, ti=cb61e000 task=cb626f20 task.ti=cb61e000) [ 156.817455] Stack: c016d99c cb61ef44 bfffffff c0000000 00000000 cbb67000 00400000 00000001 [ 156.818028] 00000000 fffffff2 cb61ef74 c01abab0 09740000 09740400 cb4083b8 cb400fe0 [ 156.818028] cb4a6c80 00000002 00000000 c01ab441 00000001 c01ab3af cb4a6c80 cb61ef60 [ 156.818028] Call Trace: [ 156.818028] [] ? walk_page_range+0x70/0x180 [ 156.818028] [] ? pagemap_read+0x16a/0x1e3 [ 156.818028] [] ? pagemap_pte_range+0x0/0xdc [ 156.818028] [] ? pagemap_pte_hole+0x0/0x37 [ 156.818028] [] ? pagemap_read+0x0/0x1e3 [ 156.818028] [] ? vfs_read+0x8a/0x106 [ 156.818028] [] ? sys_read+0x3b/0x60 [ 156.818028] [] ? sysenter_past_esp+0x6a/0xa5 [ 156.818028] ======================= [ 156.818028] Code: Bad EIP value. [ 156.818028] EIP: [<00000002>] 0x2 SS:ESP 0068:cb61ef00 [ 156.823465] ---[ end trace e2b2d610b672cbbc ]--- Greetings, Eric -- 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/