Comment 35 for bug 483453

Seems to be related to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1021069
I've got the same log entries, but do not experience any visual crash.

Jul 6 11:54:09 Laptop kernel: [ 51.018658] input: WACOM Pen Tablet as /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.6/1-1.6.3/1-1.6.3:1.0/bluetooth/hci0/hci0:11/input17
Jul 6 11:54:09 Laptop kernel: [ 51.018841] wacom 0005:056A:0081.0005: input,hidraw1: BLUETOOTH HID v1.00 Mouse [WACOM Pen Tablet] on C4:46:19:E9:D5:A5
Jul 6 11:54:10 Laptop kernel: [ 51.708224] BUG: unable to handle kernel NULL pointer dereference at 0000000000000040
Jul 6 11:54:10 Laptop kernel: [ 51.708228] IP: [<ffffffff811ee50c>] sysfs_do_create_link+0x3c/0x210
Jul 6 11:54:10 Laptop kernel: [ 51.708235] PGD 79dac7067 PUD 79daca067 PMD 0
Jul 6 11:54:10 Laptop kernel: [ 51.708238] Oops: 0000 [#1] SMP
Jul 6 11:54:10 Laptop kernel: [ 51.708240] CPU 0
Jul 6 11:54:10 Laptop kernel: [ 51.708241] Modules linked in: hid_wacom(+) hidp ip6table_filter ip6_tables ebtable_nat ebtables ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack ipt_REJECT xt_CHECKSUM iptable_mangle xt_tcpudp iptable_filter ip_tables x_tables bridge stp pci_stub vboxpci(O) vboxnetadp(O) vboxnetflt(O) vboxdrv(O) bnep rfcomm parport_pc ppdev joydev vesafb btusb bluetooth nvidia(P) pcmcia snd_hda_codec_idt snd_hda_intel uvcvideo snd_hda_codec videodev snd_hwdep v4l2_compat_ioctl32 snd_pcm snd_seq_midi tifm_7xx1 lib80211_crypt_tkip snd_rawmidi snd_seq_midi_event snd_seq wl(P) tifm_core snd_timer snd_seq_device yenta_socket pcmcia_rsrc dell_laptop pcmcia_core i7core_edac psmouse dell_wmi dcdbas edac_core sparse_keymap serio_raw snd soundcore snd_page_alloc lib80211 video mac_hid wmi lp parport firewire_ohci sdhci_pci sdhci firewire_core crc_itu_t tg3 usbhid hid usb_storage
Jul 6 11:54:10 Laptop kernel: [ 51.708299]
Jul 6 11:54:10 Laptop udevd[745]: '/sbin/modprobe -bv hid:b0005v0000056Ap00000081' [2690] terminated by signal 9 (Killed)
Jul 6 11:54:10 Laptop kernel: [ 51.708301] Pid: 2690, comm: modprobe Tainted: P O 3.2.0-26-generic #41-Ubuntu Dell Inc. Precision M6500 /0R1203
Jul 6 11:54:10 Laptop kernel: [ 51.708304] RIP: 0010:[<ffffffff811ee50c>] [<ffffffff811ee50c>] sysfs_do_create_link+0x3c/0x210
Jul 6 11:54:10 Laptop kernel: [ 51.708307] RSP: 0018:ffff88079d9f1c38 EFLAGS: 00010202
Jul 6 11:54:10 Laptop kernel: [ 51.708308] RAX: 0000000000000002 RBX: ffffffff81a4d618 RCX: 0000000000000001
Jul 6 11:54:10 Laptop kernel: [ 51.708310] RDX: ffffffff81a4d618 RSI: ffff8807cb2df8b0 RDI: 0000000000000010
Jul 6 11:54:10 Laptop kernel: [ 51.708311] RBP: ffff88079d9f1c98 R08: ffff88079d9f0000 R09: 0000000000000001
Jul 6 11:54:10 Laptop kernel: [ 51.708313] R10: dead000000200200 R11: 0000000000000001 R12: ffff8807cadf7000
Jul 6 11:54:10 Laptop kernel: [ 51.708314] R13: ffff8807cb2df8a0 R14: ffff8807cb2df8b0 R15: 0000000000000001
Jul 6 11:54:10 Laptop kernel: [ 51.708316] FS: 00007f529931e700(0000) GS:ffff8807ffc00000(0000) knlGS:0000000000000000
Jul 6 11:54:10 Laptop kernel: [ 51.708317] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Jul 6 11:54:10 Laptop kernel: [ 51.708319] CR2: 0000000000000040 CR3: 000000079da5d000 CR4: 00000000000006f0
Jul 6 11:54:10 Laptop kernel: [ 51.708320] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Jul 6 11:54:10 Laptop kernel: [ 51.708322] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Jul 6 11:54:10 Laptop kernel: [ 51.708323] Process modprobe (pid: 2690, threadinfo ffff88079d9f0000, task ffff8807a4f40000)
Jul 6 11:54:10 Laptop kernel: [ 51.708324] Stack:
Jul 6 11:54:10 Laptop kernel: [ 51.708325] ffff8807cb2dfbe0 ffff8807cb2de000 0000000000000004 ffff8807cb2df8a0
Jul 6 11:54:10 Laptop kernel: [ 51.708328] 0000000000000001 ffff8807cadf7000 ffff88079d9f1cb8 ffff8807cb2de000
Jul 6 11:54:10 Laptop kernel: [ 51.708331] ffff8807cadf7000 ffff8807cb2df8a0 0000000000000000 ffff8807cadf7010
Jul 6 11:54:10 Laptop kernel: [ 51.708334] Call Trace:
Jul 6 11:54:10 Laptop kernel: [ 51.708336] [<ffffffff811ee6f3>] sysfs_create_link+0x13/0x20
Jul 6 11:54:10 Laptop kernel: [ 51.708339] [<ffffffff814dbc31>] power_supply_powers+0x21/0x30
Jul 6 11:54:10 Laptop kernel: [ 51.708342] [<ffffffffa13345f6>] wacom_probe+0x1b6/0x320 [hid_wacom]
Jul 6 11:54:10 Laptop kernel: [ 51.708345] [<ffffffff816599ce>] ? _raw_spin_lock+0xe/0x20
Jul 6 11:54:10 Laptop kernel: [ 51.708350] [<ffffffffa0010ba4>] hid_device_probe+0xb4/0x140 [hid]
Jul 6 11:54:10 Laptop kernel: [ 51.708353] [<ffffffff811ee6f3>] ? sysfs_create_link+0x13/0x20
Jul 6 11:54:10 Laptop kernel: [ 51.708356] [<ffffffff813f54b8>] really_probe+0x68/0x190
Jul 6 11:54:10 Laptop kernel: [ 51.708358] [<ffffffff813f5745>] driver_probe_device+0x45/0x70
Jul 6 11:54:10 Laptop kernel: [ 51.708360] [<ffffffff813f581b>] __driver_attach+0xab/0xb0
Jul 6 11:54:10 Laptop kernel: [ 51.708361] [<ffffffff813f5770>] ? driver_probe_device+0x70/0x70
Jul 6 11:54:10 Laptop kernel: [ 51.708363] [<ffffffff813f5770>] ? driver_probe_device+0x70/0x70
Jul 6 11:54:10 Laptop kernel: [ 51.708365] [<ffffffff813f45ac>] bus_for_each_dev+0x5c/0x90
Jul 6 11:54:10 Laptop kernel: [ 51.708368] [<ffffffff813f527e>] driver_attach+0x1e/0x20
Jul 6 11:54:10 Laptop kernel: [ 51.708370] [<ffffffff813f4ed0>] bus_add_driver+0x1a0/0x270
Jul 6 11:54:10 Laptop kernel: [ 51.708372] [<ffffffffa004e000>] ? 0xffffffffa004dfff
Jul 6 11:54:10 Laptop kernel: [ 51.708374] [<ffffffff813f5d86>] driver_register+0x76/0x140
Jul 6 11:54:10 Laptop kernel: [ 51.708376] [<ffffffffa004e000>] ? 0xffffffffa004dfff
Jul 6 11:54:10 Laptop kernel: [ 51.708380] [<ffffffffa0011b53>] __hid_register_driver+0x53/0x90 [hid]
Jul 6 11:54:10 Laptop kernel: [ 51.708383] [<ffffffffa004e020>] wacom_init+0x20/0x1000 [hid_wacom]
Jul 6 11:54:10 Laptop kernel: [ 51.708387] [<ffffffff81002040>] do_one_initcall+0x40/0x180
Jul 6 11:54:10 Laptop kernel: [ 51.708390] [<ffffffff810a895e>] sys_init_module+0xbe/0x230
Jul 6 11:54:10 Laptop kernel: [ 51.708392] [<ffffffff81661fc2>] system_call_fastpath+0x16/0x1b
Jul 6 11:54:10 Laptop kernel: [ 51.708394] Code: 89 6d e8 4c 89 75 f0 4c 89 7d f8 66 66 66 66 90 48 85 d2 49 89 f6 48 89 d3 41 89 cf 0f 84 bf 01 00 00 48 85 ff 0f 84 74 01 00 00 <4c> 8b 6f 30 b8 f2 ff ff ff 4d 85 ed 0f 84 ba 00 00 00 48 c7 c7
Jul 6 11:54:10 Laptop kernel: [ 51.708414] RIP [<ffffffff811ee50c>] sysfs_do_create_link+0x3c/0x210
Jul 6 11:54:10 Laptop kernel: [ 51.708416] RSP <ffff88079d9f1c38>
Jul 6 11:54:10 Laptop kernel: [ 51.708417] CR2: 0000000000000040
Jul 6 11:54:10 Laptop kernel: [ 51.708419] ---[ end trace 5908f07d6374d616 ]---