From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1LOJZy-0003HA-3H for qemu-devel@nongnu.org; Sat, 17 Jan 2009 17:23:46 -0500 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1LOJZw-0003CF-DZ for qemu-devel@nongnu.org; Sat, 17 Jan 2009 17:23:45 -0500 Received: from [199.232.76.173] (port=43403 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1LOJZw-0003C5-91 for qemu-devel@nongnu.org; Sat, 17 Jan 2009 17:23:44 -0500 Received: from main.gmane.org ([80.91.229.2]:59783 helo=ciao.gmane.org) by monty-python.gnu.org with esmtps (TLS-1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1LOJZv-0001sY-US for qemu-devel@nongnu.org; Sat, 17 Jan 2009 17:23:44 -0500 Received: from list by ciao.gmane.org with local (Exim 4.43) id 1LOJZq-0003mC-A2 for qemu-devel@nongnu.org; Sat, 17 Jan 2009 22:23:38 +0000 Received: from adsl-69-234-212-7.dsl.irvnca.pacbell.net ([69.234.212.7]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sat, 17 Jan 2009 22:23:38 +0000 Received: from w41ter by adsl-69-234-212-7.dsl.irvnca.pacbell.net with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sat, 17 Jan 2009 22:23:38 +0000 From: walt Date: Sat, 17 Jan 2009 14:23:26 -0800 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: news Subject: [Qemu-devel] kqemu causing kernel oops on startup Reply-To: qemu-devel@nongnu.org List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org I'm following qemu.svn and linus.git on two different machines, and only one machine has this problem when I start qemu: QEMU Accelerator Module version 1.4.0, Copyright (c) 2005-2008 Fabrice Bellard KQEMU installed, max_locked_mem=452780kB. QEMU Accelerator Module version 1.4.0, Copyright (c) 2005-2008 Fabrice Bellard KQEMU installed, max_locked_mem=452780kB. BUG: unable to handle kernel NULL pointer dereference at 00000001 IP: [] memcpy+0x24/0x40 [kqemu] *pde = 00000000 Oops: 0002 [#1] PREEMPT last sysfs file: /sys/devices/pci0000:00/0000:00:11.1/ide0/0.0/block/hda/hda2/stat Modules linked in: kqemu snd_pcm_oss snd_mixer_oss snd_seq_oss snd_seq_midi_event snd_seq usb_storage snd_via82xx snd_ac97_codec ac97_bus snd_pcm snd_timer snd_page_alloc snd_mpu401_uart snd_rawmidi snd_seq_device uhci_hcd ehci_hcd via_rhine snd i2c_viapro mii via_agp agpgart bitrev crc32 usbcore i2c_core parport_pc parport [last unloaded: kqemu] Pid: 15409, comm: qemu Not tainted (2.6.29-rc2 #16) VT8367-8235 EIP: 0060:[] EFLAGS: 00210246 CPU: 0 EIP is at memcpy+0x24/0x40 [kqemu] EAX: 0000002f EBX: f7318424 ECX: f7318424 EDX: 00000000 ESI: 00000001 EDI: 00000000 EBP: efbcb1a0 ESP: f4f31e70 DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 0068 Process qemu (pid: 15409, ti=f4f30000 task=f7bb0720 task.ti=f4f30000) Stack: f7318420 efbcb1a0 f8adf0c3 00000001 f7318424 f7318424 c032a840 0000003c c022a6d8 d3950ca0 00000000 f78ac4a0 00000000 d3950ca0 c0157e4c efbcb1a0 0000003c efbcb1a0 d3950ca0 00000000 c0157d04 c0154354 f780cd20 dc61ca94 Call Trace: [] kqemu_open+0x41/0x53 [kqemu] [] misc_open+0x145/0x1c9 [] chrdev_open+0x148/0x160 [] chrdev_open+0x0/0x160 [] __dentry_open+0x125/0x218 [] nameidata_to_filp+0x28/0x3b [] do_filp_open+0x367/0x656 [] handle_mm_fault+0x1f0/0x49e [] alloc_fd+0x52/0xcc [] do_sys_open+0x42/0xb6 [] sys_open+0x1e/0x23 [] sysenter_do_call+0x12/0x25 Code: 01 d0 c3 8d 74 26 00 56 53 8b 4c 24 14 8b 74 24 0c 8b 5c 24 10 85 c9 74 1a 31 d2 8d b6 00 00 00 00 8d bf 00 00 00 00 0f b6 04 1a <88> 04 32 42 39 ca 75 f4 5b 89 f0 5e c3 eb 0d 90 90 90 90 90 90 EIP: [] memcpy+0x24/0x40 [kqemu] SS:ESP 0068:f4f31e70 ---[ end trace ad5fcfebf4164d66 ]--- BTW this problem has been happening for a few days now, and I update both qemu and the kernel every morning on both machines. (But only one machine has this problem. Different mobos, different CPU's.) Has anyone seen this before? Thanks!