Public bug reported: Computer freezes at random. Nothing special being done. Can be opening a browser, a libreoffice document. Has happened more and more since 14.04 version.
This is the output from the kern.log Jun 1 19:17:17 zhakal kernel: [96835.300207] BUG: unable to handle kernel NULL pointer dereference at 0000000000000282 Jun 1 19:17:17 zhakal kernel: [96835.301033] IP: [<ffffffff810b7020>] remove_wait_queue+0x0/0x60 Jun 1 19:17:17 zhakal kernel: [96835.301839] PGD 0 Jun 1 19:17:17 zhakal kernel: [96835.302638] Oops: 0002 [#1] SMP Jun 1 19:17:17 zhakal kernel: [96835.303442] Modules linked in: arc4 uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media snd_usb_audio intel_rapl ath9k joydev snd_usbmidi_lib ath9k_common iosf_mbi ath9k_hw x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_hdmi ath coretemp mac80211 snd_hda_codec_realtek snd_hda_codec_generic kvm_intel kvm crct10dif_pclmul cfg80211 gpio_ich crc32_pclmul ghash_clmulni_intel aesni_intel snd_hda_intel snd_hda_controller aes_x86_64 lrw snd_hda_codec i915 gf128mul glue_helper snd_hwdep ablk_helper cryptd snd_pcm snd_seq_midi snd_seq_midi_event 8250_fintek snd_rawmidi video mac_hid snd_seq drm_kms_helper snd_seq_device drm snd_timer snd shpchp i2c_algo_bit soundcore mei_me mei lpc_ich serio_raw parport_pc ppdev lp parport autofs4 hid_generic usbhid hid ahci r8169 libahci mii Jun 1 19:17:17 zhakal kernel: [96835.307172] CPU: 3 PID: 1280 Comm: Xorg Not tainted 3.19.0-20-generic #20-Ubuntu Jun 1 19:17:17 zhakal kernel: [96835.308120] Hardware name: Unknown Unknown/Z68ITX-A-E, BIOS 4.6.4 06/17/2011 Jun 1 19:17:17 zhakal kernel: [96835.309072] task: ffff8800aa9e44b0 ti: ffff8800ab908000 task.ti: ffff8800ab908000 Jun 1 19:17:17 zhakal kernel: [96835.310029] RIP: 0010:[<ffffffff810b7020>] [<ffffffff810b7020>] remove_wait_queue+0x0/0x60 Jun 1 19:17:17 zhakal kernel: [96835.310992] RSP: 0018:ffff8800ab90b9a0 EFLAGS: 00010286 Jun 1 19:17:17 zhakal kernel: [96835.311954] RAX: 0000000000000282 RBX: ffff880195969790 RCX: ffff8800b5c7b388 Jun 1 19:17:17 zhakal kernel: [96835.312917] RDX: dead000000200200 RSI: ffff8801959697a0 RDI: ffff88006c9d7840 Jun 1 19:17:17 zhakal kernel: [96835.313882] RBP: ffff8800ab90b9c8 R08: ffff8801a0f47500 R09: 0000000000000304 Jun 1 19:17:17 zhakal kernel: [96835.314842] R10: 0000000000000282 R11: 0000000000000304 R12: ffff880195969010 Jun 1 19:17:17 zhakal kernel: [96835.315798] R13: ffff880195969000 R14: 0000000000000009 R15: 0000000000000036 Jun 1 19:17:17 zhakal kernel: [96835.316759] FS: 00007fed172a1980(0000) GS:ffff88023fac0000(0000) knlGS:0000000000000000 Jun 1 19:17:17 zhakal kernel: [96835.317731] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Jun 1 19:17:17 zhakal kernel: [96835.318704] CR2: 0000000000000282 CR3: 00000000ab8d5000 CR4: 00000000000407e0 Jun 1 19:17:17 zhakal kernel: [96835.319674] Stack: Jun 1 19:17:17 zhakal kernel: [96835.320655] ffffffff81209f71 003fbffffff8143a 0000000000000040 0000000000000036 Jun 1 19:17:17 zhakal kernel: [96835.321638] 0040000000000000 ffff8800ab90bd68 ffffffff8120a844 ffff8800ab90bfd8 Jun 1 19:17:17 zhakal kernel: [96835.322626] 0000000000000000 0000000000000000 0000000000000000 ffff8800ab90bda8 Jun 1 19:17:17 zhakal kernel: [96835.323613] Call Trace: Jun 1 19:17:17 zhakal kernel: [96835.324589] [<ffffffff81209f71>] ? poll_freewait+0x81/0xb0 Jun 1 19:17:17 zhakal kernel: [96835.325578] [<ffffffff8120a844>] do_select+0x714/0x7d0 Jun 1 19:17:17 zhakal kernel: [96835.326569] [<ffffffff816ad1e1>] ? __kmalloc_reserve.isra.26+0x31/0x90 Jun 1 19:17:17 zhakal kernel: [96835.327562] [<ffffffff816ae08e>] ? __alloc_skb+0x8e/0x1f0 Jun 1 19:17:17 zhakal kernel: [96835.328552] [<ffffffff81209e80>] ? poll_select_copy_remaining+0x130/0x130 Jun 1 19:17:17 zhakal kernel: [96835.329548] [<ffffffff81209e80>] ? poll_select_copy_remaining+0x130/0x130 Jun 1 19:17:17 zhakal kernel: [96835.330561] [<ffffffff81209e80>] ? poll_select_copy_remaining+0x130/0x130 Jun 1 19:17:17 zhakal kernel: [96835.331543] [<ffffffff81209e80>] ? poll_select_copy_remaining+0x130/0x130 Jun 1 19:17:17 zhakal kernel: [96835.332523] [<ffffffff81209e80>] ? poll_select_copy_remaining+0x130/0x130 Jun 1 19:17:17 zhakal kernel: [96835.333503] [<ffffffff81209e80>] ? poll_select_copy_remaining+0x130/0x130 Jun 1 19:17:17 zhakal kernel: [96835.334475] [<ffffffff81209e80>] ? poll_select_copy_remaining+0x130/0x130 Jun 1 19:17:17 zhakal kernel: [96835.335443] [<ffffffff81209e80>] ? poll_select_copy_remaining+0x130/0x130 Jun 1 19:17:17 zhakal kernel: [96835.336403] [<ffffffff81209e80>] ? poll_select_copy_remaining+0x130/0x130 Jun 1 19:17:17 zhakal kernel: [96835.337358] [<ffffffff8120aac7>] core_sys_select+0x1c7/0x2f0 Jun 1 19:17:17 zhakal kernel: [96835.338319] [<ffffffff810e153e>] ? do_setitimer+0x14e/0x2c0 Jun 1 19:17:17 zhakal kernel: [96835.339277] [<ffffffff8120ac9b>] SyS_select+0xab/0x100 Jun 1 19:17:17 zhakal kernel: [96835.340233] [<ffffffff817caecd>] system_call_fastpath+0x16/0x1b Jun 1 19:17:17 zhakal kernel: [96835.341193] Code: 73 08 48 89 df 48 89 4b 10 49 89 74 24 18 48 89 c6 49 89 54 24 20 48 89 0a e8 4d 36 71 00 5b 41 5c 5d c3 0f 1f 84 00 00 00 00 00 <66> 66 66 66 90 55 48 89 e5 41 54 53 48 89 f3 49 89 fc e8 49 37 Jun 1 19:17:17 zhakal kernel: [96835.342308] RIP [<ffffffff810b7020>] remove_wait_queue+0x0/0x60 Jun 1 19:17:17 zhakal kernel: [96835.343363] RSP <ffff8800ab90b9a0> Jun 1 19:17:17 zhakal kernel: [96835.344415] CR2: 0000000000000282 Jun 1 19:17:17 zhakal kernel: [96835.352063] ---[ end trace 52a1e43e65562dd7 ]- Output from syslog: Jun 1 19:17:01 zhakal CRON[10100]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly) Jun 1 19:17:17 zhakal kernel: [96835.300207] BUG: unable to handle kernel NULL pointer dereference at 0000000000000282 Jun 1 19:17:17 zhakal kernel: [96835.301033] IP: [<ffffffff810b7020>] remove_wait_queue+0x0/0x60 Jun 1 19:17:17 zhakal kernel: [96835.301839] PGD 0 Jun 1 19:17:17 zhakal kernel: [96835.302638] Oops: 0002 [#1] SMP Jun 1 19:17:17 zhakal kernel: [96835.303442] Modules linked in: arc4 uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media snd_usb_audio intel_rapl ath9k joydev snd_usbmidi_lib ath9k_common iosf_mbi ath9k_hw x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_hdmi ath coretemp mac80211 snd_hda_codec_realtek snd_hda_codec_generic kvm_intel kvm crct10dif_pclmul cfg80211 gpio_ich crc32_pclmul ghash_clmulni_intel aesni_intel snd_hda_intel snd_hda_controller aes_x86_64 lrw snd_hda_codec i915 gf128mul glue_helper snd_hwdep ablk_helper cryptd snd_pcm snd_seq_midi snd_seq_midi_event 8250_fintek snd_rawmidi video mac_hid snd_seq drm_kms_helper snd_seq_device drm snd_timer snd shpchp i2c_algo_bit soundcore mei_me mei lpc_ich serio_raw parport_pc ppdev lp parport autofs4 hid_generic usbhid hid ahci r8169 libahci mii Jun 1 19:17:17 zhakal kernel: [96835.307172] CPU: 3 PID: 1280 Comm: Xorg Not tainted 3.19.0-20-generic #20-Ubuntu Jun 1 19:17:17 zhakal kernel: [96835.308120] Hardware name: Unknown Unknown/Z68ITX-A-E, BIOS 4.6.4 06/17/2011 Jun 1 19:17:17 zhakal kernel: [96835.309072] task: ffff8800aa9e44b0 ti: ffff8800ab908000 task.ti: ffff8800ab908000 Jun 1 19:17:17 zhakal kernel: [96835.310029] RIP: 0010:[<ffffffff810b7020>] [<ffffffff810b7020>] remove_wait_queue+0x0/0x60 Jun 1 19:17:17 zhakal kernel: [96835.310992] RSP: 0018:ffff8800ab90b9a0 EFLAGS: 00010286 Jun 1 19:17:17 zhakal kernel: [96835.311954] RAX: 0000000000000282 RBX: ffff880195969790 RCX: ffff8800b5c7b388 Jun 1 19:17:17 zhakal kernel: [96835.312917] RDX: dead000000200200 RSI: ffff8801959697a0 RDI: ffff88006c9d7840 Jun 1 19:17:17 zhakal kernel: [96835.313882] RBP: ffff8800ab90b9c8 R08: ffff8801a0f47500 R09: 0000000000000304 Jun 1 19:17:17 zhakal kernel: [96835.314842] R10: 0000000000000282 R11: 0000000000000304 R12: ffff880195969010 Jun 1 19:17:17 zhakal kernel: [96835.315798] R13: ffff880195969000 R14: 0000000000000009 R15: 0000000000000036 Jun 1 19:17:17 zhakal kernel: [96835.316759] FS: 00007fed172a1980(0000) GS:ffff88023fac0000(0000) knlGS:0000000000000000 Jun 1 19:17:17 zhakal kernel: [96835.317731] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Jun 1 19:17:17 zhakal kernel: [96835.318704] CR2: 0000000000000282 CR3: 00000000ab8d5000 CR4: 00000000000407e0 Jun 1 19:17:17 zhakal kernel: [96835.319674] Stack: Jun 1 19:17:17 zhakal kernel: [96835.320655] ffffffff81209f71 003fbffffff8143a 0000000000000040 0000000000000036 Jun 1 19:17:17 zhakal kernel: [96835.321638] 0040000000000000 ffff8800ab90bd68 ffffffff8120a844 ffff8800ab90bfd8 Jun 1 19:17:17 zhakal kernel: [96835.322626] 0000000000000000 0000000000000000 0000000000000000 ffff8800ab90bda8 Jun 1 19:17:17 zhakal kernel: [96835.323613] Call Trace: Jun 1 19:17:17 zhakal kernel: [96835.324589] [<ffffffff81209f71>] ? poll_freewait+0x81/0xb0 Jun 1 19:17:17 zhakal kernel: [96835.325578] [<ffffffff8120a844>] do_select+0x714/0x7d0 Jun 1 19:17:17 zhakal kernel: [96835.326569] [<ffffffff816ad1e1>] ? __kmalloc_reserve.isra.26+0x31/0x90 Jun 1 19:17:17 zhakal kernel: [96835.327562] [<ffffffff816ae08e>] ? __alloc_skb+0x8e/0x1f0 Jun 1 19:17:17 zhakal kernel: [96835.328552] [<ffffffff81209e80>] ? poll_select_copy_remaining+0x130/0x130 Jun 1 19:17:17 zhakal kernel: [96835.329548] [<ffffffff81209e80>] ? poll_select_copy_remaining+0x130/0x130 Jun 1 19:17:17 zhakal kernel: [96835.330561] [<ffffffff81209e80>] ? poll_select_copy_remaining+0x130/0x130 Jun 1 19:17:17 zhakal kernel: [96835.331543] [<ffffffff81209e80>] ? poll_select_copy_remaining+0x130/0x130 Jun 1 19:17:17 zhakal kernel: [96835.332523] [<ffffffff81209e80>] ? poll_select_copy_remaining+0x130/0x130 Jun 1 19:17:17 zhakal kernel: [96835.333503] [<ffffffff81209e80>] ? poll_select_copy_remaining+0x130/0x130 Jun 1 19:17:17 zhakal kernel: [96835.334475] [<ffffffff81209e80>] ? poll_select_copy_remaining+0x130/0x130 Jun 1 19:17:17 zhakal kernel: [96835.335443] [<ffffffff81209e80>] ? poll_select_copy_remaining+0x130/0x130 Jun 1 19:17:17 zhakal kernel: [96835.336403] [<ffffffff81209e80>] ? poll_select_copy_remaining+0x130/0x130 Jun 1 19:17:17 zhakal kernel: [96835.337358] [<ffffffff8120aac7>] core_sys_select+0x1c7/0x2f0 Jun 1 19:17:17 zhakal kernel: [96835.338319] [<ffffffff810e153e>] ? do_setitimer+0x14e/0x2c0 Jun 1 19:17:17 zhakal kernel: [96835.339277] [<ffffffff8120ac9b>] SyS_select+0xab/0x100 Jun 1 19:17:17 zhakal kernel: [96835.340233] [<ffffffff817caecd>] system_call_fastpath+0x16/0x1b Jun 1 19:17:17 zhakal kernel: [96835.341193] Code: 73 08 48 89 df 48 89 4b 10 49 89 74 24 18 48 89 c6 49 89 54 24 20 48 89 0a e8 4d 36 71 00 5b 41 5c 5d c3 0f 1f 84 00 00 00 00 00 <66> 66 66 66 90 55 48 89 e5 41 54 53 48 89 f3 49 89 fc e8 49 37 Jun 1 19:17:17 zhakal kernel: [96835.342308] RIP [<ffffffff810b7020>] remove_wait_queue+0x0/0x60 Jun 1 19:17:17 zhakal kernel: [96835.343363] RSP <ffff8800ab90b9a0> Jun 1 19:17:17 zhakal kernel: [96835.344415] CR2: 0000000000000282 Jun 1 19:17:17 zhakal kernel: [96835.352063] ---[ end trace 52a1e43e65562dd7 ]--- Jun 1 19:17:17 zhakal org.ayatana.bamf[1555]: (bamfdaemon:1614): Gdk-WARNING **: bamfdaemon: Fatal IO error 11 (Resource temporarily unavailable) on X server :0. Jun 1 19:17:17 zhakal org.ayatana.bamf[1555]: ** (bamfdaemon:10124): WARNING **: Could not open X display Jun 1 19:17:17 zhakal org.ayatana.bamf[1555]: gdk_mir_display_open Jun 1 19:17:17 zhakal org.ayatana.bamf[1555]: Failed to connect to Mir: Failed to connect to server socket: No such file or directory Jun 1 19:17:17 zhakal org.ayatana.bamf[1555]: Unable to init server: Could not connect: Connection refused Jun 1 19:17:17 zhakal org.ayatana.bamf[1555]: (bamfdaemon:10124): Gtk-WARNING **: cannot open display: :0 Jun 1 19:17:17 zhakal org.ayatana.bamf[1555]: ** (bamfdaemon:10126): WARNING **: Could not open X display Jun 1 19:17:17 zhakal org.ayatana.bamf[1555]: gdk_mir_display_open Jun 1 19:17:17 zhakal org.ayatana.bamf[1555]: Failed to connect to Mir: Failed to connect to server socket: No such file or directory Jun 1 19:17:17 zhakal org.ayatana.bamf[1555]: Unable to init server: Could not connect: Connection refused Jun 1 19:17:17 zhakal org.ayatana.bamf[1555]: (bamfdaemon:10126): Gtk-WARNING **: cannot open display: :0 Jun 1 19:17:17 zhakal org.ayatana.bamf[1555]: ** (bamfdaemon:10128): WARNING **: Could not open X display Jun 1 19:17:17 zhakal org.ayatana.bamf[1555]: gdk_mir_display_open Jun 1 19:17:17 zhakal org.ayatana.bamf[1555]: Failed to connect to Mir: Failed to connect to server socket: No such file or directory Jun 1 19:17:17 zhakal org.ayatana.bamf[1555]: Unable to init server: Could not connect: Connection refused Jun 1 19:17:17 zhakal org.ayatana.bamf[1555]: (bamfdaemon:10128): Gtk-WARNING **: cannot open display: :0 Jun 1 19:17:17 zhakal org.ayatana.bamf[1555]: ** (bamfdaemon:10130): WARNING **: Could not open X display Jun 1 19:17:17 zhakal org.ayatana.bamf[1555]: gdk_mir_display_open Jun 1 19:17:17 zhakal org.ayatana.bamf[1555]: Failed to connect to Mir: Failed to connect to server socket: No such file or directory Jun 1 19:17:17 zhakal org.ayatana.bamf[1555]: Unable to init server: Could not connect: Connection refused Jun 1 19:17:17 zhakal org.ayatana.bamf[1555]: (bamfdaemon:10130): Gtk-WARNING **: cannot open display: :0 ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: linux-image-3.19.0-20-generic 3.19.0-20.20 ProcVersionSignature: Ubuntu 3.19.0-20.20-generic 3.19.8 Uname: Linux 3.19.0-20-generic x86_64 ApportVersion: 2.17.2-0ubuntu1.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: zhakal 1795 F.... pulseaudio /dev/snd/controlC0: zhakal 1795 F.... pulseaudio CurrentDesktop: Unity Date: Mon Jun 1 19:33:02 2015 HibernationDevice: RESUME=UUID=b799dd61-a826-4b04-ad49-19db6d45d4e6 InstallationDate: Installed on 2014-10-27 (216 days ago) InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1) MachineType: Unknown Unknown ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-20-generic root=UUID=bf83bf0b-a356-4f10-8dfd-a8adcc1d57b0 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.19.0-20-generic N/A linux-backports-modules-3.19.0-20-generic N/A linux-firmware 1.143.1 RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 06/17/2011 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 4.6.4 dmi.board.name: Z68ITX-A-E dmi.board.vendor: ZOTAC dmi.chassis.type: 3 dmi.chassis.vendor: Unknown dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4.6.4:bd06/17/2011:svnUnknown:pnUnknown:pvr:rvnZOTAC:rnZ68ITX-A-E:rvr:cvnUnknown:ct3:cvr: dmi.product.name: Unknown dmi.sys.vendor: Unknown ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug package-from-proposed vivid ** Attachment added: "lspci-vnvn_&_version.zip" https://bugs.launchpad.net/bugs/1460743/+attachment/4408140/+files/lspci-vnvn_%26_version.zip -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1460743 Title: BUG: unable to handle kernel NULL pointer dereference at 0000000000000282 Status in linux package in Ubuntu: New Bug description: Computer freezes at random. Nothing special being done. Can be opening a browser, a libreoffice document. Has happened more and more since 14.04 version. This is the output from the kern.log Jun 1 19:17:17 zhakal kernel: [96835.300207] BUG: unable to handle kernel NULL pointer dereference at 0000000000000282 Jun 1 19:17:17 zhakal kernel: [96835.301033] IP: [<ffffffff810b7020>] remove_wait_queue+0x0/0x60 Jun 1 19:17:17 zhakal kernel: [96835.301839] PGD 0 Jun 1 19:17:17 zhakal kernel: [96835.302638] Oops: 0002 [#1] SMP Jun 1 19:17:17 zhakal kernel: [96835.303442] Modules linked in: arc4 uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media snd_usb_audio intel_rapl ath9k joydev snd_usbmidi_lib ath9k_common iosf_mbi ath9k_hw x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_hdmi ath coretemp mac80211 snd_hda_codec_realtek snd_hda_codec_generic kvm_intel kvm crct10dif_pclmul cfg80211 gpio_ich crc32_pclmul ghash_clmulni_intel aesni_intel snd_hda_intel snd_hda_controller aes_x86_64 lrw snd_hda_codec i915 gf128mul glue_helper snd_hwdep ablk_helper cryptd snd_pcm snd_seq_midi snd_seq_midi_event 8250_fintek snd_rawmidi video mac_hid snd_seq drm_kms_helper snd_seq_device drm snd_timer snd shpchp i2c_algo_bit soundcore mei_me mei lpc_ich serio_raw parport_pc ppdev lp parport autofs4 hid_generic usbhid hid ahci r8169 libahci mii Jun 1 19:17:17 zhakal kernel: [96835.307172] CPU: 3 PID: 1280 Comm: Xorg Not tainted 3.19.0-20-generic #20-Ubuntu Jun 1 19:17:17 zhakal kernel: [96835.308120] Hardware name: Unknown Unknown/Z68ITX-A-E, BIOS 4.6.4 06/17/2011 Jun 1 19:17:17 zhakal kernel: [96835.309072] task: ffff8800aa9e44b0 ti: ffff8800ab908000 task.ti: ffff8800ab908000 Jun 1 19:17:17 zhakal kernel: [96835.310029] RIP: 0010:[<ffffffff810b7020>] [<ffffffff810b7020>] remove_wait_queue+0x0/0x60 Jun 1 19:17:17 zhakal kernel: [96835.310992] RSP: 0018:ffff8800ab90b9a0 EFLAGS: 00010286 Jun 1 19:17:17 zhakal kernel: [96835.311954] RAX: 0000000000000282 RBX: ffff880195969790 RCX: ffff8800b5c7b388 Jun 1 19:17:17 zhakal kernel: [96835.312917] RDX: dead000000200200 RSI: ffff8801959697a0 RDI: ffff88006c9d7840 Jun 1 19:17:17 zhakal kernel: [96835.313882] RBP: ffff8800ab90b9c8 R08: ffff8801a0f47500 R09: 0000000000000304 Jun 1 19:17:17 zhakal kernel: [96835.314842] R10: 0000000000000282 R11: 0000000000000304 R12: ffff880195969010 Jun 1 19:17:17 zhakal kernel: [96835.315798] R13: ffff880195969000 R14: 0000000000000009 R15: 0000000000000036 Jun 1 19:17:17 zhakal kernel: [96835.316759] FS: 00007fed172a1980(0000) GS:ffff88023fac0000(0000) knlGS:0000000000000000 Jun 1 19:17:17 zhakal kernel: [96835.317731] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Jun 1 19:17:17 zhakal kernel: [96835.318704] CR2: 0000000000000282 CR3: 00000000ab8d5000 CR4: 00000000000407e0 Jun 1 19:17:17 zhakal kernel: [96835.319674] Stack: Jun 1 19:17:17 zhakal kernel: [96835.320655] ffffffff81209f71 003fbffffff8143a 0000000000000040 0000000000000036 Jun 1 19:17:17 zhakal kernel: [96835.321638] 0040000000000000 ffff8800ab90bd68 ffffffff8120a844 ffff8800ab90bfd8 Jun 1 19:17:17 zhakal kernel: [96835.322626] 0000000000000000 0000000000000000 0000000000000000 ffff8800ab90bda8 Jun 1 19:17:17 zhakal kernel: [96835.323613] Call Trace: Jun 1 19:17:17 zhakal kernel: [96835.324589] [<ffffffff81209f71>] ? poll_freewait+0x81/0xb0 Jun 1 19:17:17 zhakal kernel: [96835.325578] [<ffffffff8120a844>] do_select+0x714/0x7d0 Jun 1 19:17:17 zhakal kernel: [96835.326569] [<ffffffff816ad1e1>] ? __kmalloc_reserve.isra.26+0x31/0x90 Jun 1 19:17:17 zhakal kernel: [96835.327562] [<ffffffff816ae08e>] ? __alloc_skb+0x8e/0x1f0 Jun 1 19:17:17 zhakal kernel: [96835.328552] [<ffffffff81209e80>] ? poll_select_copy_remaining+0x130/0x130 Jun 1 19:17:17 zhakal kernel: [96835.329548] [<ffffffff81209e80>] ? poll_select_copy_remaining+0x130/0x130 Jun 1 19:17:17 zhakal kernel: [96835.330561] [<ffffffff81209e80>] ? poll_select_copy_remaining+0x130/0x130 Jun 1 19:17:17 zhakal kernel: [96835.331543] [<ffffffff81209e80>] ? poll_select_copy_remaining+0x130/0x130 Jun 1 19:17:17 zhakal kernel: [96835.332523] [<ffffffff81209e80>] ? poll_select_copy_remaining+0x130/0x130 Jun 1 19:17:17 zhakal kernel: [96835.333503] [<ffffffff81209e80>] ? poll_select_copy_remaining+0x130/0x130 Jun 1 19:17:17 zhakal kernel: [96835.334475] [<ffffffff81209e80>] ? poll_select_copy_remaining+0x130/0x130 Jun 1 19:17:17 zhakal kernel: [96835.335443] [<ffffffff81209e80>] ? poll_select_copy_remaining+0x130/0x130 Jun 1 19:17:17 zhakal kernel: [96835.336403] [<ffffffff81209e80>] ? poll_select_copy_remaining+0x130/0x130 Jun 1 19:17:17 zhakal kernel: [96835.337358] [<ffffffff8120aac7>] core_sys_select+0x1c7/0x2f0 Jun 1 19:17:17 zhakal kernel: [96835.338319] [<ffffffff810e153e>] ? do_setitimer+0x14e/0x2c0 Jun 1 19:17:17 zhakal kernel: [96835.339277] [<ffffffff8120ac9b>] SyS_select+0xab/0x100 Jun 1 19:17:17 zhakal kernel: [96835.340233] [<ffffffff817caecd>] system_call_fastpath+0x16/0x1b Jun 1 19:17:17 zhakal kernel: [96835.341193] Code: 73 08 48 89 df 48 89 4b 10 49 89 74 24 18 48 89 c6 49 89 54 24 20 48 89 0a e8 4d 36 71 00 5b 41 5c 5d c3 0f 1f 84 00 00 00 00 00 <66> 66 66 66 90 55 48 89 e5 41 54 53 48 89 f3 49 89 fc e8 49 37 Jun 1 19:17:17 zhakal kernel: [96835.342308] RIP [<ffffffff810b7020>] remove_wait_queue+0x0/0x60 Jun 1 19:17:17 zhakal kernel: [96835.343363] RSP <ffff8800ab90b9a0> Jun 1 19:17:17 zhakal kernel: [96835.344415] CR2: 0000000000000282 Jun 1 19:17:17 zhakal kernel: [96835.352063] ---[ end trace 52a1e43e65562dd7 ]- Output from syslog: Jun 1 19:17:01 zhakal CRON[10100]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly) Jun 1 19:17:17 zhakal kernel: [96835.300207] BUG: unable to handle kernel NULL pointer dereference at 0000000000000282 Jun 1 19:17:17 zhakal kernel: [96835.301033] IP: [<ffffffff810b7020>] remove_wait_queue+0x0/0x60 Jun 1 19:17:17 zhakal kernel: [96835.301839] PGD 0 Jun 1 19:17:17 zhakal kernel: [96835.302638] Oops: 0002 [#1] SMP Jun 1 19:17:17 zhakal kernel: [96835.303442] Modules linked in: arc4 uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media snd_usb_audio intel_rapl ath9k joydev snd_usbmidi_lib ath9k_common iosf_mbi ath9k_hw x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_hdmi ath coretemp mac80211 snd_hda_codec_realtek snd_hda_codec_generic kvm_intel kvm crct10dif_pclmul cfg80211 gpio_ich crc32_pclmul ghash_clmulni_intel aesni_intel snd_hda_intel snd_hda_controller aes_x86_64 lrw snd_hda_codec i915 gf128mul glue_helper snd_hwdep ablk_helper cryptd snd_pcm snd_seq_midi snd_seq_midi_event 8250_fintek snd_rawmidi video mac_hid snd_seq drm_kms_helper snd_seq_device drm snd_timer snd shpchp i2c_algo_bit soundcore mei_me mei lpc_ich serio_raw parport_pc ppdev lp parport autofs4 hid_generic usbhid hid ahci r8169 libahci mii Jun 1 19:17:17 zhakal kernel: [96835.307172] CPU: 3 PID: 1280 Comm: Xorg Not tainted 3.19.0-20-generic #20-Ubuntu Jun 1 19:17:17 zhakal kernel: [96835.308120] Hardware name: Unknown Unknown/Z68ITX-A-E, BIOS 4.6.4 06/17/2011 Jun 1 19:17:17 zhakal kernel: [96835.309072] task: ffff8800aa9e44b0 ti: ffff8800ab908000 task.ti: ffff8800ab908000 Jun 1 19:17:17 zhakal kernel: [96835.310029] RIP: 0010:[<ffffffff810b7020>] [<ffffffff810b7020>] remove_wait_queue+0x0/0x60 Jun 1 19:17:17 zhakal kernel: [96835.310992] RSP: 0018:ffff8800ab90b9a0 EFLAGS: 00010286 Jun 1 19:17:17 zhakal kernel: [96835.311954] RAX: 0000000000000282 RBX: ffff880195969790 RCX: ffff8800b5c7b388 Jun 1 19:17:17 zhakal kernel: [96835.312917] RDX: dead000000200200 RSI: ffff8801959697a0 RDI: ffff88006c9d7840 Jun 1 19:17:17 zhakal kernel: [96835.313882] RBP: ffff8800ab90b9c8 R08: ffff8801a0f47500 R09: 0000000000000304 Jun 1 19:17:17 zhakal kernel: [96835.314842] R10: 0000000000000282 R11: 0000000000000304 R12: ffff880195969010 Jun 1 19:17:17 zhakal kernel: [96835.315798] R13: ffff880195969000 R14: 0000000000000009 R15: 0000000000000036 Jun 1 19:17:17 zhakal kernel: [96835.316759] FS: 00007fed172a1980(0000) GS:ffff88023fac0000(0000) knlGS:0000000000000000 Jun 1 19:17:17 zhakal kernel: [96835.317731] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Jun 1 19:17:17 zhakal kernel: [96835.318704] CR2: 0000000000000282 CR3: 00000000ab8d5000 CR4: 00000000000407e0 Jun 1 19:17:17 zhakal kernel: [96835.319674] Stack: Jun 1 19:17:17 zhakal kernel: [96835.320655] ffffffff81209f71 003fbffffff8143a 0000000000000040 0000000000000036 Jun 1 19:17:17 zhakal kernel: [96835.321638] 0040000000000000 ffff8800ab90bd68 ffffffff8120a844 ffff8800ab90bfd8 Jun 1 19:17:17 zhakal kernel: [96835.322626] 0000000000000000 0000000000000000 0000000000000000 ffff8800ab90bda8 Jun 1 19:17:17 zhakal kernel: [96835.323613] Call Trace: Jun 1 19:17:17 zhakal kernel: [96835.324589] [<ffffffff81209f71>] ? poll_freewait+0x81/0xb0 Jun 1 19:17:17 zhakal kernel: [96835.325578] [<ffffffff8120a844>] do_select+0x714/0x7d0 Jun 1 19:17:17 zhakal kernel: [96835.326569] [<ffffffff816ad1e1>] ? __kmalloc_reserve.isra.26+0x31/0x90 Jun 1 19:17:17 zhakal kernel: [96835.327562] [<ffffffff816ae08e>] ? __alloc_skb+0x8e/0x1f0 Jun 1 19:17:17 zhakal kernel: [96835.328552] [<ffffffff81209e80>] ? poll_select_copy_remaining+0x130/0x130 Jun 1 19:17:17 zhakal kernel: [96835.329548] [<ffffffff81209e80>] ? poll_select_copy_remaining+0x130/0x130 Jun 1 19:17:17 zhakal kernel: [96835.330561] [<ffffffff81209e80>] ? poll_select_copy_remaining+0x130/0x130 Jun 1 19:17:17 zhakal kernel: [96835.331543] [<ffffffff81209e80>] ? poll_select_copy_remaining+0x130/0x130 Jun 1 19:17:17 zhakal kernel: [96835.332523] [<ffffffff81209e80>] ? poll_select_copy_remaining+0x130/0x130 Jun 1 19:17:17 zhakal kernel: [96835.333503] [<ffffffff81209e80>] ? poll_select_copy_remaining+0x130/0x130 Jun 1 19:17:17 zhakal kernel: [96835.334475] [<ffffffff81209e80>] ? poll_select_copy_remaining+0x130/0x130 Jun 1 19:17:17 zhakal kernel: [96835.335443] [<ffffffff81209e80>] ? poll_select_copy_remaining+0x130/0x130 Jun 1 19:17:17 zhakal kernel: [96835.336403] [<ffffffff81209e80>] ? poll_select_copy_remaining+0x130/0x130 Jun 1 19:17:17 zhakal kernel: [96835.337358] [<ffffffff8120aac7>] core_sys_select+0x1c7/0x2f0 Jun 1 19:17:17 zhakal kernel: [96835.338319] [<ffffffff810e153e>] ? do_setitimer+0x14e/0x2c0 Jun 1 19:17:17 zhakal kernel: [96835.339277] [<ffffffff8120ac9b>] SyS_select+0xab/0x100 Jun 1 19:17:17 zhakal kernel: [96835.340233] [<ffffffff817caecd>] system_call_fastpath+0x16/0x1b Jun 1 19:17:17 zhakal kernel: [96835.341193] Code: 73 08 48 89 df 48 89 4b 10 49 89 74 24 18 48 89 c6 49 89 54 24 20 48 89 0a e8 4d 36 71 00 5b 41 5c 5d c3 0f 1f 84 00 00 00 00 00 <66> 66 66 66 90 55 48 89 e5 41 54 53 48 89 f3 49 89 fc e8 49 37 Jun 1 19:17:17 zhakal kernel: [96835.342308] RIP [<ffffffff810b7020>] remove_wait_queue+0x0/0x60 Jun 1 19:17:17 zhakal kernel: [96835.343363] RSP <ffff8800ab90b9a0> Jun 1 19:17:17 zhakal kernel: [96835.344415] CR2: 0000000000000282 Jun 1 19:17:17 zhakal kernel: [96835.352063] ---[ end trace 52a1e43e65562dd7 ]--- Jun 1 19:17:17 zhakal org.ayatana.bamf[1555]: (bamfdaemon:1614): Gdk-WARNING **: bamfdaemon: Fatal IO error 11 (Resource temporarily unavailable) on X server :0. Jun 1 19:17:17 zhakal org.ayatana.bamf[1555]: ** (bamfdaemon:10124): WARNING **: Could not open X display Jun 1 19:17:17 zhakal org.ayatana.bamf[1555]: gdk_mir_display_open Jun 1 19:17:17 zhakal org.ayatana.bamf[1555]: Failed to connect to Mir: Failed to connect to server socket: No such file or directory Jun 1 19:17:17 zhakal org.ayatana.bamf[1555]: Unable to init server: Could not connect: Connection refused Jun 1 19:17:17 zhakal org.ayatana.bamf[1555]: (bamfdaemon:10124): Gtk-WARNING **: cannot open display: :0 Jun 1 19:17:17 zhakal org.ayatana.bamf[1555]: ** (bamfdaemon:10126): WARNING **: Could not open X display Jun 1 19:17:17 zhakal org.ayatana.bamf[1555]: gdk_mir_display_open Jun 1 19:17:17 zhakal org.ayatana.bamf[1555]: Failed to connect to Mir: Failed to connect to server socket: No such file or directory Jun 1 19:17:17 zhakal org.ayatana.bamf[1555]: Unable to init server: Could not connect: Connection refused Jun 1 19:17:17 zhakal org.ayatana.bamf[1555]: (bamfdaemon:10126): Gtk-WARNING **: cannot open display: :0 Jun 1 19:17:17 zhakal org.ayatana.bamf[1555]: ** (bamfdaemon:10128): WARNING **: Could not open X display Jun 1 19:17:17 zhakal org.ayatana.bamf[1555]: gdk_mir_display_open Jun 1 19:17:17 zhakal org.ayatana.bamf[1555]: Failed to connect to Mir: Failed to connect to server socket: No such file or directory Jun 1 19:17:17 zhakal org.ayatana.bamf[1555]: Unable to init server: Could not connect: Connection refused Jun 1 19:17:17 zhakal org.ayatana.bamf[1555]: (bamfdaemon:10128): Gtk-WARNING **: cannot open display: :0 Jun 1 19:17:17 zhakal org.ayatana.bamf[1555]: ** (bamfdaemon:10130): WARNING **: Could not open X display Jun 1 19:17:17 zhakal org.ayatana.bamf[1555]: gdk_mir_display_open Jun 1 19:17:17 zhakal org.ayatana.bamf[1555]: Failed to connect to Mir: Failed to connect to server socket: No such file or directory Jun 1 19:17:17 zhakal org.ayatana.bamf[1555]: Unable to init server: Could not connect: Connection refused Jun 1 19:17:17 zhakal org.ayatana.bamf[1555]: (bamfdaemon:10130): Gtk-WARNING **: cannot open display: :0 ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: linux-image-3.19.0-20-generic 3.19.0-20.20 ProcVersionSignature: Ubuntu 3.19.0-20.20-generic 3.19.8 Uname: Linux 3.19.0-20-generic x86_64 ApportVersion: 2.17.2-0ubuntu1.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: zhakal 1795 F.... pulseaudio /dev/snd/controlC0: zhakal 1795 F.... pulseaudio CurrentDesktop: Unity Date: Mon Jun 1 19:33:02 2015 HibernationDevice: RESUME=UUID=b799dd61-a826-4b04-ad49-19db6d45d4e6 InstallationDate: Installed on 2014-10-27 (216 days ago) InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1) MachineType: Unknown Unknown ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-20-generic root=UUID=bf83bf0b-a356-4f10-8dfd-a8adcc1d57b0 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.19.0-20-generic N/A linux-backports-modules-3.19.0-20-generic N/A linux-firmware 1.143.1 RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 06/17/2011 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 4.6.4 dmi.board.name: Z68ITX-A-E dmi.board.vendor: ZOTAC dmi.chassis.type: 3 dmi.chassis.vendor: Unknown dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4.6.4:bd06/17/2011:svnUnknown:pnUnknown:pvr:rvnZOTAC:rnZ68ITX-A-E:rvr:cvnUnknown:ct3:cvr: dmi.product.name: Unknown dmi.sys.vendor: Unknown To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1460743/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp