I can reproduce it on a 7.10 system: May 19 16:02:51 node15 kernel: [2059317.829560] PGD efe18067 PUD efe19067 PMD 0 May 19 16:02:51 node15 kernel: [2059317.922748] CPU 1 May 19 16:02:51 node15 kernel: [2059317.948928] Modules linked in: nfs lockd sunrpc autofs4 ipv6 usbhid hid uhci_hcd ehci_hcd usbk bd fuse parport_pc lp parport af_packet i2c_amd756 i2c_core amd_rng serio_raw pcspkr shpchp psmouse pci_hotplug k8temp evdev ext3 jbd mbcache sg sd_mod ide_cd cdrom ata_generic libata floppy tg3 mptspi mptscsih mptbase scsi_transport_spi scsi_mod ohci_hcd usbc ore amd74xx ide_core thermal processor fan capability commoncap May 19 16:02:51 node15 kernel: [2059318.394824] Pid: 22862, comm: mount.nfs Not tainted 2.6.22-14-generic #1 May 19 16:02:51 node15 kernel: [2059318.477001] RIP: 0010:[graft_tree+76/304] [graft_tree+76/304] graft_tree+0x4c/0x130 May 19 16:02:51 node15 kernel: [2059318.573826] RSP: 0018:ffff8100ccf55c48 EFLAGS: 00010246 May 19 16:02:51 node15 kernel: [2059318.639381] RAX: ffff8100bb90f4e0 RBX: 00000000ffffffec RCX: 0000000000000000 May 19 16:02:51 node15 kernel: [2059318.726753] RDX: ffff8100bc60f100 RSI: ffff8100ccf55e58 RDI: ffff81001b04ae00 May 19 16:02:51 node15 kernel: [2059318.814124] RBP: ffff81001b04ae00 R08: 0000000000000000 R09: ffff8100ee6f6980 May 19 16:02:51 node15 kernel: [2059318.901493] R10: 000000001785c20a R11: 0000000000000007 R12: ffff8100ccf55e58 May 19 16:02:51 node15 kernel: [2059318.988864] R13: 0000000000000000 R14: 000000000000000b R15: 000000000000000b May 19 16:02:51 node15 kernel: [2059319.076237] FS: 00002b2f50a1e6e0(0000) GS:ffff8100faab7180(0000) knlGS:00000000f7d616b0 May 19 16:02:51 node15 kernel: [2059319.175036] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b May 19 16:02:51 node15 kernel: [2059319.245784] CR2: 00000000000000b2 CR3: 00000000c45b0000 CR4: 00000000000006e0 May 19 16:02:51 node15 kernel: [2059319.333156] Process mount.nfs (pid: 22862, threadinfo ffff8100ccf54000, task ffff8100facdb4a0) May 19 16:02:51 node15 kernel: [2059319.438187] Stack: ffff8100ccf55e58 ffff8100ccf55e60 ffff81001b04ae00 ffffffff802b1fa0 May 19 16:02:51 node15 kernel: [2059319.536468] 0000000000000006 000000001b04ae00 ffff8100e22d5000 ffff8100e22d4000 May 19 16:02:51 node15 kernel: [2059319.627371] ffff8100e00be000 ffffffff802b3271 0000000000000010 0000000000000000 May 19 16:02:51 node15 kernel: [2059319.716092] Call Trace: May 19 16:02:51 node15 kernel: [2059319.749550] [do_add_mount+160/352] do_add_mount+0xa0/0x160 May 19 16:02:51 node15 kernel: [2059319.816142] [do_mount+1329/2000] do_mount+0x531/0x7d0 May 19 16:02:51 node15 kernel: [2059319.879618] [__handle_mm_fault+1985/2912] __handle_mm_fault+0x7c1/0xb60 May 19 16:02:51 node15 kernel: [2059319.952451] [autoremove_wake_function+0/48] autoremove_wake_function+0x0/0x30 May 19 16:02:51 node15 kernel: [2059320.029428] [__up_read+33/176] __up_read+0x21/0xb0 May 19 16:02:51 node15 kernel: [2059320.091866] [do_page_fault+971/2160] do_page_fault+0x3cb/0x870 May 19 16:02:51 node15 kernel: [2059320.160540] [zone_statistics+125/128] zone_statistics+0x7d/0x80 May 19 16:02:51 node15 kernel: [2059320.229212] [error_exit+0/132] error_exit+0x0/0x84 May 19 16:02:51 node15 kernel: [2059320.291648] [copy_mount_options+273/384] copy_mount_options+0x111/0x180 May 19 16:02:51 node15 kernel: [2059320.365513] [sys_mount+155/256] sys_mount+0x9b/0x100 May 19 16:02:51 node15 kernel: [2059320.428990] [system_call+126/131] system_call+0x7e/0x83 May 19 16:02:51 node15 kernel: [2059320.493504] May 19 16:02:51 node15 kernel: [2059320.513341] May 19 16:02:51 node15 kernel: [2059320.513342] Code: 0f b7 81 b2 00 00 00 25 00 f0 00 00 3d 00 40 00 00 48 8b 47 May 19 16:02:51 node15 kernel: [2059320.692552] RSP <ffff8100ccf55c48>
Happens during mount.nfs from the automounter (we dont manually mount any NFS shares). I did get 2 of them since yesterday. -- Kernel Panic due to null pointer dereference in do_add_mount() https://bugs.launchpad.net/bugs/214810 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
