[ 16.198815] vboxvfs: Successfully loaded version 3.1.4 (interface 0x00010004) [ 17.101957] eth0: no IPv6 routers present [ 19.274094] [drm] Initialized drm 1.1.0 20060810 [ 19.277213] alloc irq_desc for 18 on node -1 [ 19.277213] alloc kstat_irqs on node -1 [ 19.277268] pci 0000:00:02.0: PCI INT A -> GSI 18 (level, low) -> IRQ 18 [ 19.281346] [drm] Initialized vboxvideo 1.0.0 20090303 for 0000:00:02.0 on minor 0 [ 19.283197] BUG: unable to handle kernel NULL pointer dereference at 0000000000000028 [ 19.283207] IP: [] drm_ioctl+0x48/0x480 [drm] [ 19.283237] PGD 72789067 PUD 737ed067 PMD 0 [ 19.283245] Oops: 0000 [#1] SMP [ 19.283252] last sysfs file: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/ACPI0003:00/power_supply/AC/online [ 19.283260] CPU 1 [ 19.283265] Modules linked in: vboxvideo drm binfmt_misc vboxvfs snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device ppdev fbcon tileblit font bitblit parport_pc softcursor snd lp psmouse parport serio_raw soundcore vga16fb snd_page_alloc i2c_piix4 vgastate vboxguest floppy e1000 [ 19.283299] Pid: 729, comm: Xorg Not tainted 2.6.32-16-generic #24-Ubuntu VirtualBox [ 19.283305] RIP: 0010:[] [] drm_ioctl+0x48/0x480 [drm] [ 19.283320] RSP: 0018:ffff880073421d88 EFLAGS: 00010246 [ 19.283326] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fff4e260e90 [ 19.283332] RDX: 00000000c0106407 RSI: ffff880037b18d80 RDI: ffff8800725d4710 [ 19.283339] RBP: ffff880073421e98 R08: ffff8800725d4710 R09: 00007f881ad72700 [ 19.283345] R10: 00007fff4e260bf0 R11: 0000000000003202 R12: ffff880037b18d80 [ 19.283351] R13: 0000000000000080 R14: 0000000037b18d80 R15: 00007fff4e260f10 [ 19.283373] FS: 00007f881ad72700(0000) GS:ffff880001d00000(0000) knlGS:0000000000000000 [ 19.283379] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 19.283385] CR2: 0000000000000028 CR3: 0000000072788000 CR4: 00000000000006e0 [ 19.283396] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 19.283402] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 19.283409] Process Xorg (pid: 729, threadinfo ffff880073420000, task ffff8800727cdbc0) [ 19.283415] Stack: [ 19.283427] ffff880073421db8 ffffffff811d43b9 ffff880073421e28 0000000000000000 [ 19.283435] <0> ffff880073421dc8 ffff88007253ef00 ffff880073421ee8 ffffffff8113fdba [ 19.283443] <0> ffff880073421f18 00000000c0106407 0000000000000000 ffffffff00000001 [ 19.283452] Call Trace: [ 19.283546] [] ? ext4_file_write+0x39/0xb0 [ 19.283554] [] ? do_sync_write+0xfa/0x140 [ 19.283563] [] ? autoremove_wake_function+0x0/0x40 [ 19.283571] [] vfs_ioctl+0x7c/0xa0 [ 19.283579] [] do_vfs_ioctl+0x81/0x380 [ 19.283586] [] ? vfs_write+0x132/0x1a0 [ 19.283593] [] sys_ioctl+0x81/0xa0 [ 19.283602] [] system_call_fastpath+0x16/0x1b [ 19.283608] Code: 7d f8 0f 1f 44 00 00 48 89 95 38 ff ff ff 41 89 f6 44 0f b6 ee 65 48 8b 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8b 9f a0 00 00 00 <48> 8b 43 28 4c 8b a0 08 02 00 00 f0 41 ff 44 24 44 f0 41 ff 84 [ 19.283640] RIP [] drm_ioctl+0x48/0x480 [drm] [ 19.283653] RSP [ 19.283659] CR2: 0000000000000028 [ 19.283665] ---[ end trace c55fedd29c9a1451 ]--- [ 21.589405] BUG: unable to handle kernel NULL pointer dereference at 0000000000000028 [ 21.590017] IP: [] drm_ioctl+0x48/0x480 [drm] [ 21.590152] PGD 72d3e067 PUD 73403067 PMD 0 [ 21.590207] Oops: 0000 [#2] SMP [ 21.590257] last sysfs file: /sys/devices/pci0000:00/0000:00:02.0/boot_vga [ 21.590306] CPU 1 [ 21.590351] Modules linked in: vboxvideo drm binfmt_misc vboxvfs snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device ppdev fbcon tileblit font bitblit parport_pc softcursor snd lp psmouse parport serio_raw soundcore vga16fb snd_page_alloc i2c_piix4 vgastate vboxguest floppy e1000 [ 21.590422] Pid: 1001, comm: Xorg Tainted: G D 2.6.32-16-generic #24-Ubuntu VirtualBox [ 21.590463] RIP: 0010:[] [] drm_ioctl+0x48/0x480 [drm] [ 21.590510] RSP: 0018:ffff8800724bfd88 EFLAGS: 00010246 [ 21.590547] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000f0fe20 [ 21.590583] RDX: 00000000c0406400 RSI: ffff88007bbed3c0 RDI: ffff8800725d4710 [ 21.590617] RBP: ffff8800724bfe98 R08: ffff8800725d4710 R09: 0101010101010101 [ 21.590650] R10: 00007ffffc907600 R11: 0000000000003202 R12: ffff88007bbed3c0 [ 21.590681] R13: 00000000000000c0 R14: 000000007bbed3c0 R15: 0000000000000001 [ 21.590726] FS: 00007fc44a18a700(0000) GS:ffff880001d00000(0000) knlGS:0000000000000000 [ 21.593128] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.593128] CR2: 0000000000000028 CR3: 0000000073623000 CR4: 00000000000006e0 [ 21.593128] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.593128] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 21.593128] Process Xorg (pid: 1001, threadinfo ffff8800724be000, task ffff880072d55bc0) [ 21.593128] Stack: [ 21.593128] ffff8800724bfdf8 ffffffff810f2959 ffff8800724bfe28 0000000000000000 [ 21.593128] <0> ffff8800725319a0 ffff8800724bfe38 ffff8800724bfdd8 ffffffff811390ad [ 21.593128] <0> ffffea0001aa3378 00000000c0406400 ffff8800724bfdf8 ffffffff810f1277 [ 21.593128] Call Trace: [ 21.593128] [] ? filemap_fault+0xb9/0x460 [ 21.593128] [] ? mem_cgroup_update_mapped_file_stat+0x2d/0x90 [ 21.593128] [] ? unlock_page+0x27/0x30 [ 21.593128] [] ? __do_fault+0x429/0x4f0 [ 21.593128] [] vfs_ioctl+0x7c/0xa0 [ 21.593128] [] do_vfs_ioctl+0x81/0x380 [ 21.593128] [] ? up_read+0xe/0x10 [ 21.593128] [] ? do_page_fault+0x148/0x380 [ 21.593128] [] sys_ioctl+0x81/0xa0 [ 21.593128] [] system_call_fastpath+0x16/0x1b [ 21.593128] Code: 7d f8 0f 1f 44 00 00 48 89 95 38 ff ff ff 41 89 f6 44 0f b6 ee 65 48 8b 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8b 9f a0 00 00 00 <48> 8b 43 28 4c 8b a0 08 02 00 00 f0 41 ff 44 24 44 f0 41 ff 84 [ 21.593128] RIP [] drm_ioctl+0x48/0x480 [drm] [ 21.593128] RSP [ 21.593128] CR2: 0000000000000028 [ 21.594416] ---[ end trace c55fedd29c9a1452 ]--- [ 23.299755] BUG: unable to handle kernel NULL pointer dereference at 0000000000000028 [ 23.299788] IP: [] drm_ioctl+0x48/0x480 [drm] [ 23.299829] PGD 72416067 PUD 72424067 PMD 0 [ 23.299838] Oops: 0000 [#3] SMP [ 23.299847] last sysfs file: /sys/devices/pci0000:00/0000:00:02.0/boot_vga [ 23.299859] CPU 1 [ 23.299868] Modules linked in: vboxvideo drm binfmt_misc vboxvfs snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device ppdev fbcon tileblit font bitblit parport_pc softcursor snd lp psmouse parport serio_raw soundcore vga16fb snd_page_alloc i2c_piix4 vgastate vboxguest floppy e1000 [ 23.299893] Pid: 1007, comm: Xorg Tainted: G D 2.6.32-16-generic #24-Ubuntu VirtualBox [ 23.299909] RIP: 0010:[] [] drm_ioctl+0x48/0x480 [drm] [ 23.299917] RSP: 0018:ffff88007af73d88 EFLAGS: 00010246 [ 23.299923] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000001712e20 [ 23.299929] RDX: 00000000c0406400 RSI: ffff880072c71600 RDI: ffff8800725d4710 [ 23.299935] RBP: ffff88007af73e98 R08: ffff8800725d4710 R09: 0101010101010101 [ 23.299941] R10: 00007fff1a89bdd0 R11: 0000000000003202 R12: ffff880072c71600 [ 23.299947] R13: 0000000000000000 R14: 0000000072c71600 R15: 0000000000000001 [ 23.299970] FS: 00007fef742a8700(0000) GS:ffff880001d00000(0000) knlGS:0000000000000000 [ 23.299976] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.299982] CR2: 0000000000000028 CR3: 0000000072fc7000 CR4: 00000000000006e0 [ 23.299992] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.299998] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 23.300004] Process Xorg (pid: 1007, threadinfo ffff88007af72000, task ffff880037ae44d0) [ 23.300010] Stack: [ 23.300015] ffff88007af73df8 ffffffff810f2959 ffff88007af73e28 0000000000000000 [ 23.300023] <0> ffff88007347fdc0 ffff88007af73e38 ffff88007af73dd8 ffffffff811390ad [ 23.300031] <0> ffffea0001aa3378 00000000c0406400 ffff88007af73df8 ffffffff810f1277 [ 23.300039] Call Trace: [ 23.300050] [] ? filemap_fault+0xb9/0x460 [ 23.300059] [] ? mem_cgroup_update_mapped_file_stat+0x2d/0x90 [ 23.300066] [] ? unlock_page+0x27/0x30 [ 23.300074] [] ? __do_fault+0x429/0x4f0 [ 23.300083] [] vfs_ioctl+0x7c/0xa0 [ 23.300090] [] do_vfs_ioctl+0x81/0x380 [ 23.300099] [] ? up_read+0xe/0x10 [ 23.300108] [] ? do_page_fault+0x148/0x380 [ 23.300115] [] sys_ioctl+0x81/0xa0 [ 23.300124] [] system_call_fastpath+0x16/0x1b [ 23.300130] Code: 7d f8 0f 1f 44 00 00 48 89 95 38 ff ff ff 41 89 f6 44 0f b6 ee 65 48 8b 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8b 9f a0 00 00 00 <48> 8b 43 28 4c 8b a0 08 02 00 00 f0 41 ff 44 24 44 f0 41 ff 84 [ 23.300161] RIP [] drm_ioctl+0x48/0x480 [drm] [ 23.300175] RSP [ 23.300180] CR2: 0000000000000028 [ 23.300187] ---[ end trace c55fedd29c9a1453 ]--- [ 24.969524] BUG: unable to handle kernel NULL pointer dereference at 0000000000000028 [ 24.969536] IP: [] drm_ioctl+0x48/0x480 [drm] [ 24.969565] PGD 72532067 PUD 735cc067 PMD 0 [ 24.969573] Oops: 0000 [#4] SMP [ 24.969579] last sysfs file: /sys/devices/pci0000:00/0000:00:02.0/boot_vga [ 24.969587] CPU 1 [ 24.969592] Modules linked in: vboxvideo drm binfmt_misc vboxvfs snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device ppdev fbcon tileblit font bitblit parport_pc softcursor snd lp psmouse parport serio_raw soundcore vga16fb snd_page_alloc i2c_piix4 vgastate vboxguest floppy e1000 [ 24.969624] Pid: 1012, comm: Xorg Tainted: G D 2.6.32-16-generic #24-Ubuntu VirtualBox [ 24.969630] RIP: 0010:[] [] drm_ioctl+0x48/0x480 [drm] [ 24.969645] RSP: 0018:ffff8800724bfd88 EFLAGS: 00010246 [ 24.969651] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000002207e20 [ 24.969656] RDX: 00000000c0406400 RSI: ffff880072fa4900 RDI: ffff8800725d4710 [ 24.969662] RBP: ffff8800724bfe98 R08: ffff8800725d4710 R09: 0101010101010101 [ 24.969668] R10: 00007fffde5d6700 R11: 0000000000003202 R12: ffff880072fa4900 [ 24.969674] R13: 0000000000000000 R14: 0000000072fa4900 R15: 0000000000000001 [ 24.969696] FS: 00007fa89d20d700(0000) GS:ffff880001d00000(0000) knlGS:0000000000000000 [ 24.969702] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.969708] CR2: 0000000000000028 CR3: 0000000072fc7000 CR4: 00000000000006e0 [ 24.969718] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.969724] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 24.969730] Process Xorg (pid: 1012, threadinfo ffff8800724be000, task ffff880037ae44d0) [ 24.969736] Stack: [ 24.969741] ffff8800724bfdf8 ffffffff810f2959 ffff8800724bfe28 0000000000000000 [ 24.969748] <0> ffff880073426370 ffff8800724bfe38 ffff8800724bfdd8 ffffffff811390ad [ 24.969756] <0> ffffea0001aa3378 00000000c0406400 ffff8800724bfdf8 ffffffff810f1277 [ 24.969765] Call Trace: [ 24.969775] [] ? filemap_fault+0xb9/0x460 [ 24.969785] [] ? mem_cgroup_update_mapped_file_stat+0x2d/0x90 [ 24.969792] [] ? unlock_page+0x27/0x30 [ 24.969800] [] ? __do_fault+0x429/0x4f0 [ 24.969808] [] vfs_ioctl+0x7c/0xa0 [ 24.969815] [] do_vfs_ioctl+0x81/0x380 [ 24.969824] [] ? up_read+0xe/0x10 [ 24.969833] [] ? do_page_fault+0x148/0x380 [ 24.969840] [] sys_ioctl+0x81/0xa0 [ 24.969849] [] system_call_fastpath+0x16/0x1b [ 24.969855] Code: 7d f8 0f 1f 44 00 00 48 89 95 38 ff ff ff 41 89 f6 44 0f b6 ee 65 48 8b 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8b 9f a0 00 00 00 <48> 8b 43 28 4c 8b a0 08 02 00 00 f0 41 ff 44 24 44 f0 41 ff 84 [ 24.969887] RIP [] drm_ioctl+0x48/0x480 [drm] [ 24.969899] RSP [ 24.969905] CR2: 0000000000000028 [ 24.969912] ---[ end trace c55fedd29c9a1454 ]--- [ 26.909909] BUG: unable to handle kernel NULL pointer dereference at 0000000000000028 [ 26.910242] IP: [] drm_ioctl+0x48/0x480 [drm] [ 26.911461] PGD 73775067 PUD 7af63067 PMD 0 [ 26.911726] Oops: 0000 [#5] SMP [ 26.912028] last sysfs file: /sys/devices/pci0000:00/0000:00:03.0/irq [ 26.912187] CPU 1 [ 26.912315] Modules linked in: vboxvideo drm binfmt_misc vboxvfs snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device ppdev fbcon tileblit font bitblit parport_pc softcursor snd lp psmouse parport serio_raw soundcore vga16fb snd_page_alloc i2c_piix4 vgastate vboxguest floppy e1000 [ 26.912565] Pid: 1017, comm: Xorg Tainted: G D 2.6.32-16-generic #24-Ubuntu VirtualBox [ 26.912608] RIP: 0010:[] [] drm_ioctl+0x48/0x480 [drm] [ 26.912651] RSP: 0018:ffff88007af73d88 EFLAGS: 00010246 [ 26.912683] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000001c77e20 [ 26.912690] RDX: 00000000c0406400 RSI: ffff88007c4770c0 RDI: ffff8800725d4710 [ 26.912700] RBP: ffff88007af73e98 R08: ffff8800725d4710 R09: 0101010101010101 [ 26.912706] R10: 00007fffe0ac6720 R11: 0000000000003206 R12: ffff88007c4770c0 [ 26.912712] R13: 00000000000000c0 R14: 000000007c4770c0 R15: 0000000000000001 [ 26.912736] FS: 00007f24f2424700(0000) GS:ffff880001d00000(0000) knlGS:0000000000000000 [ 26.912742] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.912748] CR2: 0000000000000028 CR3: 0000000072c83000 CR4: 00000000000006e0 [ 26.912758] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.912764] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 26.912770] Process Xorg (pid: 1017, threadinfo ffff88007af72000, task ffff880037ae16f0) [ 26.912776] Stack: [ 26.912781] ffff88007af73df8 ffffffff810f2959 ffff88007af73e28 0000000000000000 [ 26.912789] <0> ffff880072415420 ffff88007af73e38 ffff88007af73dd8 ffffffff811390ad [ 26.912797] <0> ffffea0001aa3378 00000000c0406400 ffff88007af73df8 ffffffff810f1277 [ 26.912806] Call Trace: [ 26.912816] [] ? filemap_fault+0xb9/0x460 [ 26.912826] [] ? mem_cgroup_update_mapped_file_stat+0x2d/0x90 [ 26.912834] [] ? unlock_page+0x27/0x30 [ 26.912841] [] ? __do_fault+0x429/0x4f0 [ 26.912850] [] vfs_ioctl+0x7c/0xa0 [ 26.912857] [] do_vfs_ioctl+0x81/0x380 [ 26.912866] [] ? up_read+0xe/0x10 [ 26.912875] [] ? do_page_fault+0x148/0x380 [ 26.912882] [] sys_ioctl+0x81/0xa0 [ 26.912892] [] system_call_fastpath+0x16/0x1b [ 26.912898] Code: 7d f8 0f 1f 44 00 00 48 89 95 38 ff ff ff 41 89 f6 44 0f b6 ee 65 48 8b 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8b 9f a0 00 00 00 <48> 8b 43 28 4c 8b a0 08 02 00 00 f0 41 ff 44 24 44 f0 41 ff 84 [ 26.912933] RIP [] drm_ioctl+0x48/0x480 [drm] [ 26.912946] RSP [ 26.912951] CR2: 0000000000000028 [ 26.913162] ---[ end trace c55fedd29c9a1455 ]--- [ 28.679924] BUG: unable to handle kernel NULL pointer dereference at 0000000000000028 [ 28.679944] IP: [] drm_ioctl+0x48/0x480 [drm] [ 28.680165] PGD 7364a067 PUD 7365e067 PMD 0 [ 28.680165] Oops: 0000 [#6] SMP [ 28.680165] last sysfs file: /sys/devices/pci0000:00/0000:00:02.0/boot_vga [ 28.680165] CPU 0 [ 28.680165] Modules linked in: vboxvideo drm binfmt_misc vboxvfs snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device ppdev fbcon tileblit font bitblit parport_pc softcursor snd lp psmouse parport serio_raw soundcore vga16fb snd_page_alloc i2c_piix4 vgastate vboxguest floppy e1000 [ 28.680165] Pid: 1024, comm: Xorg Tainted: G D 2.6.32-16-generic #24-Ubuntu VirtualBox [ 28.680165] RIP: 0010:[] [] drm_ioctl+0x48/0x480 [drm] [ 28.680165] RSP: 0018:ffff8800724c9d88 EFLAGS: 00010246 [ 28.680165] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00000000027b3e20 [ 28.680165] RDX: 00000000c0406400 RSI: ffff88007bbede40 RDI: ffff8800725d4710 [ 28.680165] RBP: ffff8800724c9e98 R08: ffff8800725d4710 R09: 0101010101010101 [ 28.680165] R10: 00007fff518d10d0 R11: 0000000000003202 R12: ffff88007bbede40 [ 28.680165] R13: 0000000000000040 R14: 000000007bbede40 R15: 0000000000000001 [ 28.680165] FS: 00007fe2fe7c0700(0000) GS:ffff880001c00000(0000) knlGS:0000000000000000 [ 28.680165] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.680165] CR2: 0000000000000028 CR3: 0000000072c4f000 CR4: 00000000000006f0 [ 28.680165] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.680165] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 28.680165] Process Xorg (pid: 1024, threadinfo ffff8800724c8000, task ffff880037ae5bc0) [ 28.680165] Stack: [ 28.680165] ffff8800724c9df8 ffffffff810f2959 ffff8800724c9e28 0000000000000000 [ 28.680165] <0> ffff880073426420 ffff8800724c9e38 ffff8800724c9dd8 ffffffff811390ad [ 28.680165] <0> ffffea0001aa3378 00000000c0406400 ffff8800724c9df8 ffffffff810f1277 [ 28.680165] Call Trace: [ 28.680165] [] ? filemap_fault+0xb9/0x460 [ 28.680165] [] ? mem_cgroup_update_mapped_file_stat+0x2d/0x90 [ 28.680165] [] ? unlock_page+0x27/0x30 [ 28.680165] [] ? __do_fault+0x429/0x4f0 [ 28.680165] [] vfs_ioctl+0x7c/0xa0 [ 28.680165] [] do_vfs_ioctl+0x81/0x380 [ 28.680165] [] ? up_read+0xe/0x10 [ 28.680165] [] ? do_page_fault+0x148/0x380 [ 28.680165] [] sys_ioctl+0x81/0xa0 [ 28.680165] [] system_call_fastpath+0x16/0x1b [ 28.680165] Code: 7d f8 0f 1f 44 00 00 48 89 95 38 ff ff ff 41 89 f6 44 0f b6 ee 65 48 8b 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8b 9f a0 00 00 00 <48> 8b 43 28 4c 8b a0 08 02 00 00 f0 41 ff 44 24 44 f0 41 ff 84 [ 28.680165] RIP [] drm_ioctl+0x48/0x480 [drm] [ 28.680165] RSP [ 28.680165] CR2: 0000000000000028 [ 28.686824] ---[ end trace c55fedd29c9a1456 ]--- [ 30.404991] BUG: unable to handle kernel NULL pointer dereference at 0000000000000028 [ 30.405025] IP: [] drm_ioctl+0x48/0x480 [drm] [ 30.405075] PGD 7aeeb067 PUD 73754067 PMD 0 [ 30.405101] Oops: 0000 [#7] SMP [ 30.405123] last sysfs file: /sys/devices/pci0000:00/0000:00:02.0/boot_vga [ 30.405145] CPU 1 [ 30.405163] Modules linked in: vboxvideo drm binfmt_misc vboxvfs snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device ppdev fbcon tileblit font bitblit parport_pc softcursor snd lp psmouse parport serio_raw soundcore vga16fb snd_page_alloc i2c_piix4 vgastate vboxguest floppy e1000 [ 30.405207] Pid: 1029, comm: Xorg Tainted: G D 2.6.32-16-generic #24-Ubuntu VirtualBox [ 30.405224] RIP: 0010:[] [] drm_ioctl+0x48/0x480 [drm] [ 30.405248] RSP: 0018:ffff88007af73d88 EFLAGS: 00010246 [ 30.405262] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000001f99e20 [ 30.405275] RDX: 00000000c0406400 RSI: ffff88007c471480 RDI: ffff8800725d4710 [ 30.405287] RBP: ffff88007af73e98 R08: ffff8800725d4710 R09: 0101010101010101 [ 30.405299] R10: 00007fff73cce9a0 R11: 0000000000003202 R12: ffff88007c471480 [ 30.405310] R13: 0000000000000080 R14: 000000007c471480 R15: 0000000000000001 [ 30.405339] FS: 00007ff96b88d700(0000) GS:ffff880001d00000(0000) knlGS:0000000000000000 [ 30.405349] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 30.405358] CR2: 0000000000000028 CR3: 00000000737a7000 CR4: 00000000000006e0 [ 30.405372] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 30.405381] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 30.405390] Process Xorg (pid: 1029, threadinfo ffff88007af72000, task ffff880037ae5bc0) [ 30.405398] Stack: [ 30.405406] ffff88007af73df8 ffffffff810f2959 ffff88007af73e28 0000000000000000 [ 30.405415] <0> ffff880072c814d0 ffff88007af73e38 ffff88007af73dd8 ffffffff811390ad [ 30.405425] <0> ffffea0001aa3378 00000000c0406400 ffff88007af73df8 ffffffff810f1277 [ 30.405435] Call Trace: [ 30.405448] [] ? filemap_fault+0xb9/0x460 [ 30.405459] [] ? mem_cgroup_update_mapped_file_stat+0x2d/0x90 [ 30.405468] [] ? unlock_page+0x27/0x30 [ 30.405477] [] ? __do_fault+0x429/0x4f0 [ 30.405486] [] vfs_ioctl+0x7c/0xa0 [ 30.405494] [] do_vfs_ioctl+0x81/0x380 [ 30.405503] [] ? up_read+0xe/0x10 [ 30.405513] [] ? do_page_fault+0x148/0x380 [ 30.405520] [] sys_ioctl+0x81/0xa0 [ 30.405529] [] system_call_fastpath+0x16/0x1b [ 30.405535] Code: 7d f8 0f 1f 44 00 00 48 89 95 38 ff ff ff 41 89 f6 44 0f b6 ee 65 48 8b 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8b 9f a0 00 00 00 <48> 8b 43 28 4c 8b a0 08 02 00 00 f0 41 ff 44 24 44 f0 41 ff 84 [ 30.405566] RIP [] drm_ioctl+0x48/0x480 [drm] [ 30.405603] RSP [ 30.405609] CR2: 0000000000000028 [ 30.405616] ---[ end trace c55fedd29c9a1457 ]--- [ 59.730021] end_request: I/O error, dev fd0, sector 0 [ 59.750108] end_request: I/O error, dev fd0, sector 0