From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261957AbVCBBSL (ORCPT ); Tue, 1 Mar 2005 20:18:11 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261963AbVCBBSL (ORCPT ); Tue, 1 Mar 2005 20:18:11 -0500 Received: from newmail.linux4media.de ([193.201.54.81]:5805 "EHLO l4m.mine.nu") by vger.kernel.org with ESMTP id S261957AbVCBBRd (ORCPT ); Tue, 1 Mar 2005 20:17:33 -0500 From: Bernhard Rosenkraenzer Organization: Ark Linux team To: linux-kernel@vger.kernel.org Subject: 2.6.11-rc5-mm1: (seemingly non-fatal) NULL pointer dereference on startup Date: Wed, 2 Mar 2005 02:13:00 +0100 User-Agent: KMail/1.7.2 MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200503020213.00174.bero@arklinux.org> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org I got this right after the initramfs script was finished and the root filesystem was mounted: Unable to handle kernel NULL pointer dereference at virtual address 00000000 printing eip: c02f52fa *pde = 00000000 Oops: 0002 [#1] PREEMPT Modules linked in: CPU: 0 EIP: 0060:[] Not tainted VLI EFLAGS: 00010246 (2.6.11-0.rc5.1ark) EIP is at __down+0x10a/0x130 eax: 00000000 ebx: cf63652c ecx: cfd6d020 edx: ffffffff esi: 00000286 edi: cfbcd000 ebp: cfbb3020 esp: cfbcddc0 ds: 007b es: 007b ss: 0068 Process hotplug (pid: 286, threadinfo=cfbcd000 task=cfbb3020) Stack: cf636534 00000001 cfbb3020 c0116cb0 00100100 00200200 cfbcde04 9bbf6ac4 d70e78df cf727d14 cfbcdf54 cfbcde6c cffe4140 c02f51c7 00000010 cf6364bc c01711ad cf727d14 cfbcde6c c016c7b6 cf6364bc 00000001 cf6349fa cfbcde6c Call Trace: [] default_wake_function+0x0/0x20 [] __down_failed+0x7/0xc [] .text.lock.namei+0x8/0x1db [] permission+0xe6/0xf0 [] link_path_walk+0x882/0xf80 [] __up+0x1c/0x20 [] .text.lock.namei+0x22/0x1db [] link_path_walk+0x9c1/0xf80 [] handle_mm_fault+0x1ea/0x540 [] path_lookup+0x83/0x150 [] open_namei+0x8f/0x620 [] filp_open+0x3b/0x70 [] get_unused_fd+0x2c/0xd0 [] sys_open+0x57/0xf0 [] syscall_call+0x7/0xb Code: ff 21 e0 ff 48 14 8b 40 08 a8 08 75 19 c7 45 00 00 00 00 00 83 c4 24 5b5e 5f 5d c3 e8 00 07 00 00 e9 73 ff ff ff e8 f6 06 00 00 <00> 00 00 00 00 00 eb da 0f 0b a4 00 7b 48 30 c0 eb 8e 0f 0b a5 Same box, same kernel, with hotplug disabled boots up fine and produces a similar oops later: Unable to handle kernel NULL pointer dereference at virtual address 00000000 printing eip: c02f52fa *pde = 00000000 Oops: 0002 [#1] PREEMPT Modules linked in: usbkbd usbhid snd_cmipci gameport snd_pcm snd_page_alloc snd_opl3_lib snd_timer snd_hwdep snd_mpu401_uart snd_rawmidi snd_seq_device snd soundcore psmouse binfmt_misc lp parport md5 ipv6 8139too mii af_packet 8250 serial_core ide_cd cdrom ohci_hcd usbcore video thermal sony_acpi processor pcc_acpi fan container button battery ac genrtc CPU: 0 EIP: 0060:[] Not tainted VLI EFLAGS: 00210246 (2.6.11-0.rc5.1ark) EIP is at __down+0x10a/0x130 eax: 00000000 ebx: c0346644 ecx: cda20540 edx: ffffffff esi: 00200286 edi: c6b6f000 ebp: c4c68020 esp: c6b6fed4 ds: 007b es: 007b ss: 0068 Process iwconfig (pid: 3080, threadinfo=c6b6f000 task=c4c68020) Stack: c034664c 00000001 c4c68020 c0116cb0 00100100 00200200 30746973 00000000 00000001 cfe71ee0 cfe71ee0 c55006e0 c55006e0 c02f51c7 00000000 c4c68020 c02f6c94 c019279f 00000000 00000000 00000000 c019288f 00000000 c55006e0 Call Trace: [] default_wake_function+0x0/0x20 [] __down_failed+0x7/0xc [] .text.lock.kernel_lock+0x28/0x37 [] de_put+0xf/0xa0 [] proc_delete_inode+0x5f/0xc0 [] proc_delete_inode+0x0/0xc0 [] generic_delete_inode+0xb5/0x190 [] iput+0x3c/0x90 [] dput+0x6b/0x2b0 [] __fput+0x11e/0x1c0 [] filp_close+0x52/0xa0 [] sys_close+0x58/0xa0 [] sysenter_past_esp+0x54/0x75 Code: ff 21 e0 ff 48 14 8b 40 08 a8 08 75 19 c7 45 00 00 00 00 00 83 c4 24 5b5e 5f 5d c3 e8 00 07 00 00 e9 73 ff ff ff e8 f6 06 00 00 <00> 00 00 00 00 00 eb da 0f 0b a4 00 7b 48 30 c0 eb 8e 0f 0b a5