Public bug reported: Binary package hint: linux-image-2.6.20-13-generic
The diskless box uses multiple nfs shares stacked with unionfs as root file system (see http://www.evolware.org/chri/hopeless.html). After upgrading to Feisty I got this kernel dump below. When booting the same system with linux-image-2.6.17-11 (Edgy) ist just comes up fine. The oops happens shortly after finishing initramfs, during regular system init phase. [ 62.149865] shpchp: Standard Hot Plug PCI Controller Driver version: 0.4 [ 62.227384] iTCO_vendor_support: vendor-support=0 [ 62.268982] iTCO_wdt: Intel TCO WatchDog Timer Driver v1.01 (11-Nov-2006) [ 62.309766] iTCO_wdt: Found a ICH7 or ICH7R TCO device (Version=2, TCOBASE=0x1060) [ 62.369157] iTCO_wdt: initialized. heartbeat=30 sec (nowayout=0) [ 62.477414] parport: PnPBIOS parport detected. [ 62.504174] parport0: PC-style at 0x378 (0x778), irq 7, dma 3 [PCSPP,TRISTATE,COMPAT,EPP,ECP,DMA] [ 62.570071] input: PC Speaker as /class/input/input2 [ 62.608493] intel_rng: FWH not detected [ 63.093293] Unable to handle kernel NULL pointer dereference at 0000000000000008 RIP: [ 63.126035] [<ffffffff8819bc97>] :nfs:nfs_lookup+0x147/0x2d0 [ 63.174974] PGD 7ecae067 PUD 25c8067 PMD 0 [ 63.200064] Oops: 0000 [1] SMP [ 63.218884] CPU 0 [ 63.230910] Modules linked in: pcspkr parport_pc psmouse parport iTCO_wdt iTCO_vendor_support shpchp pci_hotplug evdev tsdev af_packet nfs lockd sunrpc sg sr_mod cdrom generic ata_generic floppy ehci_hcd ata_piix libata uhci_hcd scsi_mod e1000 usbcore thermal processor fan fbcon tileblit font bitblit softcursor vesafb cfbcopyarea cfbimgblt cfbfillrect capability commoncap bonding unionfs [ 63.438017] Pid: 3319, comm: mount Not tainted 2.6.20-13-generic #2 [ 63.475395] RIP: 0010:[<ffffffff8819bc97>] [<ffffffff8819bc97>] :nfs:nfs_lookup+0x147/0x2d0 [ 63.525784] RSP: 0018:ffff81007f4eba48 EFLAGS: 00010246 [ 63.557459] RAX: ffff81007da66000 RBX: ffff81007e900be0 RCX: 000000000000fd02 [ 63.600021] RDX: ffff81007f64e250 RSI: 0000000000000000 RDI: ffff81007f64e1e0 [ 63.642581] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 63.685144] R10: ffff81007d82e250 R11: 0000000000000128 R12: 0000000000000000 [ 63.727707] R13: ffff81007f64e1e0 R14: ffff81007f4ebc28 R15: ffff81007f4ebb18 [ 63.770268] FS: 00002b45b46676f0(0000) GS:ffffffff8054d000(0000) knlGS:0000000000000000 [ 63.818532] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 63.852798] CR2: 0000000000000008 CR3: 00000000025e6000 CR4: 00000000000006e0 [ 63.895361] Process mount (pid: 3319, threadinfo ffff81007f4ea000, task ffff81007e47c100) [ 63.944142] Stack: 0000000000000006 ffff81007f4ebd48 ffff81007e93c980 ffff81007f4ebc58 [ 63.992147] 00000000fffeef6b ffffffff8819bdc3 000081ed00000001 0000000000000001 [ 64.036472] 0000000000000000 0000000000000000 0000000000000000 ffffffff00000000 [ 64.079707] Call Trace: [ 64.095376] [<ffffffff8819bdc3>] :nfs:nfs_lookup+0x273/0x2d0 [ 64.129700] [<ffffffff8819c83d>] :nfs:nfs_permission+0x1dd/0x200 [ 64.166085] [<ffffffff8819c544>] :nfs:nfs_access_get_cached+0x24/0x140 [ 64.205589] [<ffffffff8023861c>] __lookup_hash+0x11c/0x160 [ 64.238866] [<ffffffff802dc2e8>] lookup_one_len_nd+0x78/0x90 [ 64.273134] [<ffffffff8800bdee>] :unionfs:unionfs_lookup_backend+0x2ce/0x930 [ 64.315703] [<ffffffff8819c83d>] :nfs:nfs_permission+0x1dd/0x200 [ 64.352090] [<ffffffff880031f3>] :unionfs:unionfs_lookup+0x53/0x70 [ 64.389464] [<ffffffff802123d8>] __fput+0x168/0x1d0 [ 64.419063] [<ffffffff8022e0e4>] mntput_no_expire+0x24/0xb0 [ 64.452813] [<ffffffff8023861c>] __lookup_hash+0x11c/0x160 [ 64.486044] [<ffffffff8025a8ef>] lookup_create+0x4f/0xa0 [ 64.518236] [<ffffffff80256d75>] sys_linkat+0xd5/0x180 [ 64.549392] [<ffffffff8020ceaf>] dput+0x2f/0x170 [ 64.577442] [<ffffffff802123d8>] __fput+0x168/0x1d0 [ 64.607040] [<ffffffff8022e0e4>] mntput_no_expire+0x24/0xb0 [ 64.640788] [<ffffffffffff81007f4eba48> [ 64.821659] CR2: 0000000000000008 ** Affects: linux-source-2.6.20 (Ubuntu) Importance: Undecided Status: Unconfirmed -- feisty, amd64: kernel oops during boot on a nfs root diskless system https://bugs.launchpad.net/bugs/103044 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
