From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx1.redhat.com (mx1.redhat.com [172.16.48.31]) by int-mx1.corp.redhat.com (8.12.11.20060308/8.12.11) with ESMTP id k6AGeGCP004955 for ; Mon, 10 Jul 2006 12:40:16 -0400 Received: from nf-out-0910.google.com (nf-out-0910.google.com [64.233.182.191]) by mx1.redhat.com (8.12.11.20060308/8.12.11) with ESMTP id k6AGeEIm013299 for ; Mon, 10 Jul 2006 12:40:15 -0400 Received: by nf-out-0910.google.com with SMTP id i2so577992nfe for ; Mon, 10 Jul 2006 09:40:14 -0700 (PDT) Message-ID: <87f94c370607100933l3e709b8bv4142c4acb7fd33a6@mail.gmail.com> Date: Mon, 10 Jul 2006 12:33:19 -0400 From: "Greg Freemyer" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline Subject: [linux-lvm] Opps while attempting snapshot Reply-To: LVM general discussion and development List-Id: LVM general discussion and development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , List-Id: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: LVM general discussion and development I just got the below oops while working with a newly upgraded SUSE 10.1 install. It uses a 2.6.16.13-4 Suse kernel and lvm2-2.02.02-9 userland. I was attempting to work with a LVM snapshot at the time. I have not yet attempted replicate this with a 2.6.17 kernel. I assume the below is related to LVM snapshots? thanks, Greg ==== Jul 7 16:18:56 Forensic1000 udevd-event[32296]: run_program: '/sbin/dmsetup' abnormal exit Jul 7 16:18:56 Forensic1000 kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000024 Jul 7 16:18:56 Forensic1000 kernel: printing eip: Jul 7 16:18:56 Forensic1000 kernel: c0290ca0 Jul 7 16:18:56 Forensic1000 kernel: *pde = 00000000 Jul 7 16:18:56 Forensic1000 kernel: Oops: 0002 [#1] Jul 7 16:18:56 Forensic1000 kernel: SMP Jul 7 16:18:56 Forensic1000 kernel: last sysfs file: /block/sda/size Jul 7 16:18:56 Forensic1000 kernel: Modules linked in: nls_utf8 udf joydev st ide_cd sr_mod cdrom usb_storage iptable_filter ip_tables x_tables dm_snapshot ipv6 button battery ac xfs_quota xfs exportfs loop dm_mod hw_random intel_agp agpgart shpchp pci_hotplug uhci_hcd ehci_hcd i8xx_tco usbcore i2c_i801 i2c_core e100 mii parport_pc lp parport ext3 jbd piix fan thermal processor sg 3w_xxxx sd_mod scsi_mod ide_disk ide_core Jul 7 16:18:56 Forensic1000 kernel: CPU: 0 Jul 7 16:18:56 Forensic1000 kernel: EIP: 0060:[] Not tainted VLI Jul 7 16:18:56 Forensic1000 kernel: EFLAGS: 00210246 (2.6.16.13-4-smp #1) Jul 7 16:18:56 Forensic1000 kernel: EIP is at _read_lock+0x0/0xc Jul 7 16:18:56 Forensic1000 kernel: eax: 00000024 ebx: 00000000 ecx: 00000000 edx: 00000000 Jul 7 16:18:56 Forensic1000 kernel: esi: 00000000 edi: fffffffa ebp: 00000000 esp: e4be5dcc Jul 7 16:18:56 Forensic1000 kernel: ds: 007b es: 007b ss: 0068 Jul 7 16:18:56 Forensic1000 kernel: Process dmsetup (pid: 32298, threadinfo=e4be4000 task=dfc900b0) Jul 7 16:18:56 Forensic1000 kernel: Stack: <0>f98317bf 00000000 f991d000 f98317e1 00000000 f991d000 fffffffa 00000000 Jul 7 16:18:56 Forensic1000 kernel: f9831909 f991d000 f9833f6a 00000163 00000004 f991d000 f991d000 fffffffa Jul 7 16:18:56 Forensic1000 kernel: e4be4000 f98341d6 f991d000 fffffff4 00000007 f9834e79 f98341c7 00000004 Jul 7 16:18:56 Forensic1000 kernel: Call Trace: Jul 7 16:18:56 Forensic1000 kernel: [] dm_get_table+0xc/0x23 [dm_mod] Jul 7 16:18:57 Forensic1000 kernel: [] dm_put+0xb/0x11b [dm_mod] Jul 7 16:18:57 Forensic1000 kernel: [] dm_get_mdptr+0x18/0x1c [dm_mod] Jul 7 16:18:57 Forensic1000 kernel: [] find_device+0x34/0xa4 [dm_mod] Jul 7 16:18:57 Forensic1000 kernel: [] dev_status+0xf/0x2b [dm_mod] Jul 7 16:18:57 Forensic1000 kernel: [] ctl_ioctl+0x1ee/0x232 [dm_mod] Jul 7 16:18:57 Forensic1000 kernel: [] dev_status+0x0/0x2b [dm_mod] Jul 7 16:18:57 Forensic1000 kernel: [] do_ioctl+0x48/0x5e Jul 7 16:18:57 Forensic1000 kernel: [] vfs_ioctl+0x24c/0x25e Jul 7 16:18:57 Forensic1000 kernel: [] sys_ioctl+0x48/0x60 Jul 7 16:18:57 Forensic1000 kernel: [] syscall_call+0x7/0xb Jul 7 16:18:57 Forensic1000 kernel: Code: 31 c0 84 d2 0f 9f c0 c3 b2 01 86 10 c3 b1 01 86 08 52 9d c3 b2 01 86 10 fb c3 f0 83 28 01 79 05 e8 4e e1 ff ff b8 01 00 00 00 c3 83 28 01 79 05 e8 3d e1 ff ff c3 9c 5a fa f0 83 28 01 79 05 -- Greg Freemyer The Norcross Group Forensics for the 21st Century