[ 22.725531] vboxdrv: Found 4 processor cores. [ 22.726329] vboxdrv: fAsync=0 offMin=0x384 offMax=0x1212 [ 22.726438] vboxdrv: TSC mode is 'synchronous', kernel timer mode is 'normal'. [ 22.726440] vboxdrv: Successfully loaded version 4.3.10_Ubuntu (interface 0x001a0007). [ 22.761808] vboxpci: IOMMU not found (not registered) [ 24.720770] snd_hda_intel 0000:00:1b.0: IRQ timing workaround is activated for card #0. Suggest a bigger bdl_pos_adj. [ 24.739892] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:23:32:b8:67:c6:08:00 SRC=192.168.9.186 DST=224.0.0.1 LEN=44 TOS=0x00 PREC=0x00 TTL=1 ID=3271 PROTO=UDP SPT=60266 DPT=8612 LEN=24 [ 25.648719] BUG: unable to handle kernel paging request at ffffec2000000900 [ 25.648761] IP: [] kfree+0x56/0x140 [ 25.648789] PGD 0 [ 25.648801] Oops: 0000 [#1] SMP [ 25.648822] Modules linked in: snd_hrtimer pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) bnep rfcomm bluetooth 6lowpan_iphc ip6t_REJECT xt_hl ip6t_rt nf_conntrack_ipv6 nf_defrag_ipv6 ipt_REJECT xt_LOG xt_limit xt_tcpudp xt_addrtype nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack radeon snd_hda_codec_realtek ip6table_filter snd_hda_codec_generic ip6_tables snd_hda_codec_hdmi snd_hda_intel nf_conntrack_netbios_ns nf_conntrack_broadcast nf_nat_ftp snd_hda_controller nf_nat snd_hda_codec nf_conntrack_ftp nf_conntrack snd_hwdep iptable_filter ip_tables snd_pcm gpio_ich x_tables kvm_intel kvm snd_seq_midi snd_seq_midi_event snd_rawmidi ttm snd_seq snd_seq_device serio_raw drm_kms_helper snd_timer drm snd lpc_ich soundcore i2c_algo_bit x38_edac edac_core mac_hid binfmt_misc parport_pc ppdev vhba(OE) coretemp it87 hwmon_vid lp parport pata_acpi hid_generic usbhid hid raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor firewire_ohci firewire_core crc_itu_t raid6_pq r8169 raid1 mii ahci pata_jmicron raid0 libahci multipath linear floppy [ 25.649420] CPU: 0 PID: 2353 Comm: Xorg Tainted: G OE 3.16.0-28-generic #38-Ubuntu [ 25.649456] Hardware name: Gigabyte Technology Co., Ltd. X48-DQ6/X48-DQ6, BIOS F6 02/29/2008 [ 25.649492] task: ffff880221399e90 ti: ffff8800ca808000 task.ti: ffff8800ca808000 [ 25.649523] RIP: 0010:[] [] kfree+0x56/0x140 [ 25.649557] RSP: 0018:ffff8800ca80b9b8 EFLAGS: 00010286 [ 25.649582] RAX: ffffec2000000900 RBX: 0000100000024414 RCX: 0000000000000000 [ 25.649612] RDX: ffffea0000000000 RSI: 0000000000005f78 RDI: 0000100000024414 [ 25.649641] RBP: ffff8800ca80b9d0 R08: 0000000000000013 R09: 0000000000000005 [ 25.649671] R10: ffff88022148f68d R11: ffffffffc0496291 R12: ffff8802236d0000 [ 25.649700] R13: ffffffffc04f31ce R14: ffff880221872200 R15: 0000000000000000 [ 25.649730] FS: 00007fc7c50ba9c0(0000) GS:ffff88022fc00000(0000) knlGS:0000000000000000 [ 25.649765] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.649789] CR2: ffffec2000000900 CR3: 00000000caf52000 CR4: 00000000000007f0 [ 25.649818] Stack: [ 25.649828] ffff8802236d0000 ffff8802236d0000 0000000000000000 ffff8800ca80ba98 [ 25.649867] ffffffffc04f31ce ffff88022432e000 0000712c21fc6000 0000704400007048 [ 25.649905] 0000000000000008 ffff880221872400 ffff8800cb9e0d00 0000100000024414 [ 25.649944] Call Trace: [ 25.649982] [] evergreen_hdmi_setmode+0x8ce/0xbd0 [radeon] [ 25.650028] [] ? drm_detect_hdmi_monitor+0x6e/0xb0 [drm] [ 25.650078] [] radeon_atom_encoder_mode_set+0x158/0x2d0 [radeon] [ 25.650114] [] drm_crtc_helper_set_mode+0x346/0x520 [drm_kms_helper] [ 25.650152] [] drm_crtc_helper_set_config+0x86f/0xa60 [drm_kms_helper] [ 25.650189] [] ? idr_mark_full+0x61/0x70 [ 25.650228] [] radeon_crtc_set_config+0x49/0x120 [radeon] [ 25.650269] [] drm_mode_set_config_internal+0x61/0xe0 [drm] [ 25.650312] [] drm_mode_setcrtc+0xd9/0x590 [drm] [ 25.650347] [] drm_ioctl+0x1ec/0x660 [drm] [ 25.650385] [] radeon_drm_ioctl+0x4b/0x80 [radeon] [ 25.650413] [] do_vfs_ioctl+0x2e0/0x4c0 [ 25.650438] [] SyS_ioctl+0x81/0xa0 [ 25.650462] [] system_call_fastpath+0x1a/0x1f [ 25.650488] Code: 00 00 00 80 ff 77 00 00 48 01 d8 48 0f 42 15 a2 44 a6 00 48 01 d0 48 ba 00 00 00 00 00 ea ff ff 48 c1 e8 0c 48 c1 e0 06 48 01 d0 <48> 8b 10 80 e6 80 0f 85 be 00 00 00 49 89 c2 49 8b 02 a8 80 0f [ 25.650717] RIP [] kfree+0x56/0x140 [ 25.650745] RSP [ 25.650761] CR2: ffffec2000000900 [ 28.349542] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:a0:f3:c1:e4:b6:2e:08:00 SRC=0.0.0.0 DST=224.0.0.1 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 [ 29.842871] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:fb:ac:18:26:63:21:12:08:00 SRC=192.168.9.210 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 [ 31.874023] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:23:32:b8:67:c6:08:00 SRC=192.168.9.186 DST=224.0.0.1 LEN=44 TOS=0x00 PREC=0x00 TTL=1 ID=20111 PROTO=UDP SPT=53216 DPT=8612 LEN=24 [ 38.986445] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:23:32:b8:67:c6:08:00 SRC=192.168.9.186 DST=224.0.0.1 LEN=44 TOS=0x00 PREC=0x00 TTL=1 ID=19451 PROTO=UDP SPT=53637 DPT=8612 LEN=24 [ 46.111618] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:23:32:b8:67:c6:08:00 SRC=192.168.9.186 DST=224.0.0.1 LEN=44 TOS=0x00 PREC=0x00 TTL=1 ID=29876 PROTO=UDP SPT=63264 DPT=8612 LEN=24 [ 48.737851] audit: type=1400 audit(1419006428.630:69): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/lib/cups/backend/cups-pdf" pid=4361 comm="apparmor_parser" [ 48.737936] audit: type=1400 audit(1419006428.630:70): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/sbin/cupsd" pid=4361 comm="apparmor_parser" [ 48.738464] audit: type=1400 audit(1419006428.630:71): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/sbin/cupsd" pid=4361 comm="apparmor_parser" [ 53.226947] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:23:32:b8:67:c6:08:00 SRC=192.168.9.186 DST=224.0.0.1 LEN=44 TOS=0x00 PREC=0x00 TTL=1 ID=57960 PROTO=UDP SPT=55884 DPT=8612 LEN=24 [ 60.362567] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:23:32:b8:67:c6:08:00 SRC=192.168.9.186 DST=224.0.0.1 LEN=44 TOS=0x00 PREC=0x00 TTL=1 ID=29712 PROTO=UDP SPT=51443 DPT=8612 LEN=24 [ 67.485506] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:23:32:b8:67:c6:08:00 SRC=192.168.9.186 DST=224.0.0.1 LEN=44 TOS=0x00 PREC=0x00 TTL=1 ID=27689 PROTO=UDP SPT=52390 DPT=8612 LEN=24 [ 74.627188] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:23:32:b8:67:c6:08:00 SRC=192.168.9.186 DST=224.0.0.1 LEN=44 TOS=0x00 PREC=0x00 TTL=1 ID=50822 PROTO=UDP SPT=56776 DPT=8612 LEN=24 [ 81.758162] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:23:32:b8:67:c6:08:00 SRC=192.168.9.186 DST=224.0.0.1 LEN=44 TOS=0x00 PREC=0x00 TTL=1 ID=29548 PROTO=UDP SPT=55192 DPT=8612 LEN=24 [ 88.866752] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:23:32:b8:67:c6:08:00 SRC=192.168.9.186 DST=224.0.0.1 LEN=44 TOS=0x00 PREC=0x00 TTL=1 ID=59 PROTO=UDP SPT=61380 DPT=8612 LEN=24 [ 96.027849] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:23:32:b8:67:c6:08:00 SRC=192.168.9.186 DST=224.0.0.1 LEN=44 TOS=0x00 PREC=0x00 TTL=1 ID=63726 PROTO=UDP SPT=61659 DPT=8612 LEN=24 [ 110.307059] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:23:32:b8:67:c6:08:00 SRC=192.168.9.186 DST=224.0.0.1 LEN=44 TOS=0x00 PREC=0x00 TTL=1 ID=56193 PROTO=UDP SPT=51981 DPT=8612 LEN=24 [ 131.721556] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:23:32:b8:67:c6:08:00 SRC=192.168.9.186 DST=224.0.0.1 LEN=44 TOS=0x00 PREC=0x00 TTL=1 ID=3820 PROTO=UDP SPT=62044 DPT=8612 LEN=24 [ 146.017187] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:23:32:b8:67:c6:08:00 SRC=192.168.9.186 DST=224.0.0.1 LEN=44 TOS=0x00 PREC=0x00 TTL=1 ID=53137 PROTO=UDP SPT=58771 DPT=8612 LEN=24 [ 167.422049] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:23:32:b8:67:c6:08:00 SRC=192.168.9.186 DST=224.0.0.1 LEN=44 TOS=0x00 PREC=0x00 TTL=1 ID=21699 PROTO=UDP SPT=56797 DPT=8612 LEN=24 [ 188.860391] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:23:32:b8:67:c6:08:00 SRC=192.168.9.186 DST=224.0.0.1 LEN=44 TOS=0x00 PREC=0x00 TTL=1 ID=13578 PROTO=UDP SPT=57194 DPT=8612 LEN=24 [ 210.312905] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:23:32:b8:67:c6:08:00 SRC=192.168.9.186 DST=224.0.0.1 LEN=44 TOS=0x00 PREC=0x00 TTL=1 ID=64265 PROTO=UDP SPT=57853 DPT=8612 LEN=24 [ 231.732467] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:23:32:b8:67:c6:08:00 SRC=192.168.9.186 DST=224.0.0.1 LEN=44 TOS=0x00 PREC=0x00 TTL=1 ID=21878 PROTO=UDP SPT=51442 DPT=8612 LEN=24 [ 240.124042] INFO: task Xorg:2353 blocked for more than 120 seconds. [ 240.124094] Tainted: G OE 3.16.0-28-generic #38-Ubuntu [ 240.124135] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 240.124183] Xorg D ffff88022fc13440 0 2353 2214 0x00400000 [ 240.124234] ffff8800ca80b380 0000000000000082 ffff880221399e90 ffff8800ca80bfd8 [ 240.124290] 0000000000013440 0000000000013440 ffffffff81c1a480 ffff8802236c3208 [ 240.124346] ffff8802236c320c ffff880221399e90 00000000ffffffff ffff8802236c3210 [ 240.124401] Call Trace: [ 240.124425] [] schedule_preempt_disabled+0x29/0x70 [ 240.124467] [] __mutex_lock_slowpath+0xd5/0x1d0 [ 240.124507] [] mutex_lock+0x1f/0x2f [ 240.124569] [] drm_modeset_lock_all+0x42/0xd0 [drm] [ 240.124618] [] drm_fb_helper_pan_display+0x2f/0xf0 [drm_kms_helper] [ 240.124670] [] fb_pan_display+0xc9/0x190 [ 240.124707] [] bit_update_start+0x20/0x50 [ 240.124744] [] fbcon_switch+0x3a2/0x550 [ 240.124782] [] redraw_screen+0x199/0x260 [ 240.124819] [] fbcon_blank+0x20a/0x2d0 [ 240.124856] [] ? wake_up_klogd+0x34/0x50 [ 240.124892] [] ? console_unlock+0x1f8/0x440 [ 240.124932] [] ? lock_timer_base.isra.34+0x2b/0x50 [ 240.124973] [] ? internal_add_timer+0x2f/0x70 [ 240.125013] [] ? mod_timer+0x12a/0x1e0 [ 240.125049] [] do_unblank_screen+0xb8/0x1f0 [ 240.125087] [] unblank_screen+0x10/0x20 [ 240.125125] [] bust_spinlocks+0x19/0x40 [ 240.125161] [] oops_end+0x38/0x150 [ 240.125195] [] no_context+0x2b3/0x2c0 [ 240.125230] [] __bad_area_nosemaphore+0x73/0x1ca [ 240.125271] [] ? lock_timer_base.isra.34+0x2b/0x50 [ 240.125312] [] bad_area_nosemaphore+0x13/0x15 [ 240.125353] [] __do_page_fault+0x9c/0x550 [ 240.125411] [] ? cail_reg_write+0x1a/0x20 [radeon] [ 240.125473] [] ? atom_put_dst+0x459/0x540 [radeon] [ 240.125515] [] do_page_fault+0x31/0x70 [ 240.125580] [] ? evergreen_hdmi_setmode+0x8ce/0xbd0 [radeon] [ 240.125627] [] page_fault+0x28/0x30 [ 240.125690] [] ? evergreen_hdmi_setmode+0x8ce/0xbd0 [radeon] [ 240.125756] [] ? atom_execute_table_locked+0x1f1/0x360 [radeon] [ 240.125806] [] ? kfree+0x56/0x140 [ 240.125868] [] evergreen_hdmi_setmode+0x8ce/0xbd0 [radeon] [ 240.125930] [] ? drm_detect_hdmi_monitor+0x6e/0xb0 [drm] [ 240.126004] [] radeon_atom_encoder_mode_set+0x158/0x2d0 [radeon] [ 240.126056] [] drm_crtc_helper_set_mode+0x346/0x520 [drm_kms_helper] [ 240.126112] [] drm_crtc_helper_set_config+0x86f/0xa60 [drm_kms_helper] [ 240.126164] [] ? idr_mark_full+0x61/0x70 [ 240.128173] [] radeon_crtc_set_config+0x49/0x120 [radeon] [ 240.130164] [] drm_mode_set_config_internal+0x61/0xe0 [drm] [ 240.132156] [] drm_mode_setcrtc+0xd9/0x590 [drm] [ 240.134129] [] drm_ioctl+0x1ec/0x660 [drm] [ 240.136005] [] radeon_drm_ioctl+0x4b/0x80 [radeon] [ 240.137870] [] do_vfs_ioctl+0x2e0/0x4c0 [ 240.139735] [] SyS_ioctl+0x81/0xa0 [ 240.141534] [] system_call_fastpath+0x1a/0x1f [ 246.023614] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:23:32:b8:67:c6:08:00 SRC=192.168.9.186 DST=224.0.0.1 LEN=44 TOS=0x00 PREC=0x00 TTL=1 ID=33251 PROTO=UDP SPT=53544 DPT=8612 LEN=24 [ 267.443379] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:23:32:b8:67:c6:08:00 SRC=192.168.9.186 DST=224.0.0.1 LEN=44 TOS=0x00 PREC=0x00 TTL=1 ID=19099 PROTO=UDP SPT=56400 DPT=8612 LEN=24 [ 288.814528] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:23:32:b8:67:c6:08:00 SRC=192.168.9.186 DST=224.0.0.1 LEN=44 TOS=0x00 PREC=0x00 TTL=1 ID=43915 PROTO=UDP SPT=56825 DPT=8612 LEN=24 [ 309.199115] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:23:32:b8:67:c6:08:00 SRC=192.168.9.186 DST=224.0.0.1 LEN=44 TOS=0x00 PREC=0x00 TTL=1 ID=65255 PROTO=UDP SPT=62293 DPT=8612 LEN=24 [ 330.667630] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:23:32:b8:67:c6:08:00 SRC=192.168.9.186 DST=224.0.0.1 LEN=44 TOS=0x00 PREC=0x00 TTL=1 ID=53387 PROTO=UDP SPT=49826 DPT=8612 LEN=24