ignore the previous post. that was taken from messages here is one from syslog
notice the line below NULL dereference Aug 18 10:07:56 lobster kernel: [ 6578.774473] BUG: unable to handle kernel NULL pointer dereference at 00000000000000a8 Aug 18 10:07:56 lobster kernel: [ 6578.774478] IP: [<ffffffffa0a92b57>] snd_pcm_playback_poll+0x17/0xf0 [snd_pcm] Aug 18 10:07:56 lobster kernel: [ 6578.774488] PGD 1348a8067 PUD 1348a9067 PMD 0 Aug 18 10:07:56 lobster kernel: [ 6578.774490] Oops: 0000 [#1] SMP Aug 18 10:07:56 lobster kernel: [ 6578.774492] last sysfs file: /sys/devices/pci0000:00/0000:00:1a.7/usb1/1-4/1-4.4/1-4.4:1.0/host6/target6:0:0/6:0:0:0/block/sdb/sdb2/stat Aug 18 10:07:56 lobster kernel: [ 6578.774496] Dumping ftrace buffer: Aug 18 10:07:56 lobster kernel: [ 6578.774498] (ftrace buffer empty) Aug 18 10:07:56 lobster kernel: [ 6578.774499] CPU 1 Aug 18 10:07:56 lobster kernel: [ 6578.774500] Modules linked in: vboxnetadp vboxnetflt vboxdrv nls_iso8859_1 nls_cp437 vfat fat aes_x86_64 aes_generic binfmt_misc bridge stp bnep input_polldev lp pata_pcmcia snd_hda_intel snd_pcm_oss arc4 snd_mixer_oss ecb snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi iwlagn pcmcia snd_rawmidi iwlcore snd_seq_midi_event snd_seq hid_logitech leds_hp_disk led_class mac80211 snd_timer snd_seq_device ff_memless video joydev iTCO_wdt snd soundcore yenta_socket rsrc_nonstatic sdhci_pci sdhci ricoh_mmc usbhid output pcspkr tpm_infineon tpm tpm_bios usb_storage psmouse ppdev serio_raw lis3lv02d parport_pc parport iTCO_vendor_support cfg80211 intel_agp snd_page_alloc btusb pcmcia_core nvidia(P) ohci1394 ieee1394 e1000e fbcon tileblit font bitblit softcursor Aug 18 10:07:56 lobster kernel: [ 6578.774533] Pid: 3605, comm: pulseaudio Tainted: P 2.6.28-15-generic #48-Ubuntu Aug 18 10:07:56 lobster kernel: [ 6578.774534] RIP: 0010:[<ffffffffa0a92b57>] [<ffffffffa0a92b57>] snd_pcm_playback_poll+0x17/0xf0 [snd_pcm] Aug 18 10:07:56 lobster kernel: [ 6578.774540] RSP: 0018:ffff880131555aa8 EFLAGS: 00010246 Aug 18 10:07:56 lobster kernel: [ 6578.774541] RAX: ffff88011e049b30 RBX: 0000000000000000 RCX: 0000000000000000 Aug 18 10:07:56 lobster kernel: [ 6578.774543] RDX: 0000000000000006 RSI: 0000000000000000 RDI: ffff880133c5d540 Aug 18 10:07:56 lobster kernel: [ 6578.774544] RBP: ffff880131555ab8 R08: 0000000000000005 R09: ffff880133c5d568 Aug 18 10:07:56 lobster kernel: [ 6578.774545] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 Aug 18 10:07:56 lobster kernel: [ 6578.774547] R13: ffff880133c5d540 R14: 0000000000000000 R15: ffff880131555ddc Aug 18 10:07:56 lobster kernel: [ 6578.774548] FS: 00007fb815249950(0000) GS:ffff88013f802d80(0000) knlGS:0000000000000000 Aug 18 10:07:56 lobster kernel: [ 6578.774550] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Aug 18 10:07:56 lobster kernel: [ 6578.774551] CR2: 00000000000000a8 CR3: 000000013d463000 CR4: 00000000000026a0 Aug 18 10:07:56 lobster kernel: [ 6578.774552] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Aug 18 10:07:56 lobster kernel: [ 6578.774553] DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000400 Aug 18 10:07:56 lobster kernel: [ 6578.774555] Process pulseaudio (pid: 3605, threadinfo ffff880131554000, task ffff8801338c0000) Aug 18 10:07:56 lobster kernel: [ 6578.774556] Stack: Aug 18 10:07:56 lobster kernel: [ 6578.774557] 0000000000000000 ffff880131555dd4 ffff880131555b48 ffffffff802f7819 Aug 18 10:07:56 lobster kernel: [ 6578.774560] 0000000000000000 ffff880131555b68 ffff880131555db8 0000000000000000 Aug 18 10:07:56 lobster kernel: [ 6578.774562] 0000000000000000 0000000031555bf8 0000000000000000 ffff880131555db8 Aug 18 10:07:56 lobster kernel: [ 6578.774565] Call Trace: Aug 18 10:07:56 lobster kernel: [ 6578.774566] [<ffffffff802f7819>] do_poll+0xe9/0x280 Aug 18 10:07:56 lobster kernel: [ 6578.774571] [<ffffffff802f7ce4>] do_sys_poll+0x134/0x200 Aug 18 10:07:56 lobster kernel: [ 6578.774573] [<ffffffff802f8740>] ? __pollwait+0x0/0x120 Aug 18 10:07:56 lobster kernel: [ 6578.774575] [<ffffffff8024a6f0>] ? default_wake_function+0x0/0x10 Aug 18 10:07:56 lobster kernel: [ 6578.774578] [<ffffffff8024a6f0>] ? default_wake_function+0x0/0x10 Aug 18 10:07:56 lobster kernel: [ 6578.774580] [<ffffffff8024a6f0>] ? default_wake_function+0x0/0x10 Aug 18 10:07:56 lobster kernel: [ 6578.774582] [<ffffffff8023e0ef>] ? wake_affine+0xaf/0x240 Aug 18 10:07:56 lobster kernel: [ 6578.774585] [<ffffffff80270bb9>] ? getnstimeofday+0x59/0xe0 Aug 18 10:07:56 lobster kernel: [ 6578.774588] [<ffffffff80270bb9>] ? getnstimeofday+0x59/0xe0 Aug 18 10:07:56 lobster kernel: [ 6578.774590] [<ffffffffa0aca172>] ? azx_pcm_pointer+0x22/0x50 [snd_hda_intel] Aug 18 10:07:56 lobster kernel: [ 6578.774604] [<ffffffffa0a97f4b>] ? snd_pcm_update_hw_ptr+0x4b/0x270 [snd_pcm] Aug 18 10:07:56 lobster kernel: [ 6578.774610] [<ffffffffa0a92dd4>] ? snd_pcm_status+0x1a4/0x250 [snd_pcm] Aug 18 10:07:56 lobster kernel: [ 6578.774615] [<ffffffffa0a94337>] ? snd_pcm_common_ioctl1+0x187/0x770 [snd_pcm] Aug 18 10:07:56 lobster kernel: [ 6578.774621] [<ffffffffa0a94bfd>] ? snd_pcm_playback_ioctl1+0x4d/0x250 [snd_pcm] Aug 18 10:07:56 lobster kernel: [ 6578.774626] [<ffffffff80277978>] ? futex_wake+0xf8/0x130 Aug 18 10:07:56 lobster kernel: [ 6578.774628] [<ffffffff8069b741>] ? _spin_lock_irq+0x11/0x20 Aug 18 10:07:56 lobster kernel: [ 6578.774632] [<ffffffff802f7df9>] sys_ppoll+0x49/0x180 Aug 18 10:07:56 lobster kernel: [ 6578.774633] [<ffffffff802f6bd0>] ? sys_ioctl+0x80/0xa0 Aug 18 10:07:56 lobster kernel: [ 6578.774636] [<ffffffff802e8608>] ? sys_read+0x88/0x90 Aug 18 10:07:56 lobster kernel: [ 6578.774638] [<ffffffff8021253a>] system_call_fastpath+0x16/0x1b Aug 18 10:07:56 lobster kernel: [ 6578.774641] Code: 48 89 df e8 0c fa ff ff 41 89 c4 90 e9 65 ff ff ff 0f 1f 00 55 48 89 f1 48 85 c9 48 89 e5 41 54 53 48 8b 87 98 00 00 00 4c 8b 20 <49> 8b 9c 24 a8 00 00 00 48 8d b3 f0 00 00 00 74 0a 48 85 f6 74 Aug 18 10:07:56 lobster kernel: [ 6578.774662] RIP [<ffffffffa0a92b57>] snd_pcm_playback_poll+0x17/0xf0 [snd_pcm] Aug 18 10:07:56 lobster kernel: [ 6578.774667] RSP <ffff880131555aa8> Aug 18 10:07:56 lobster kernel: [ 6578.774669] CR2: 00000000000000a8 Aug 18 10:07:56 lobster kernel: [ 6578.774670] ---[ end trace d1adddfa48d1f161 ]--- Aug 18 10:07:56 lobster kernel: [ 6578.779164] BUG: unable to handle kernel NULL pointer dereference at 00000000000000a8 Aug 18 10:07:56 lobster kernel: [ 6578.779167] IP: [<ffffffffa0a93777>] snd_pcm_capture_poll+0x17/0xf0 [snd_pcm] Aug 18 10:07:56 lobster kernel: [ 6578.779174] PGD 1348a8067 PUD 1348a9067 PMD 0 Aug 18 10:07:56 lobster kernel: [ 6578.779177] Oops: 0000 [#2] SMP Aug 18 10:07:56 lobster kernel: [ 6578.779179] last sysfs file: /sys/devices/pci0000:00/0000:00:1a.7/usb1/1-4/1-4.4/1-4.4:1.0/host6/target6:0:0/6:0:0:0/block/sdb/sdb2/stat Aug 18 10:07:56 lobster kernel: [ 6578.779181] CPU 0 Aug 18 10:07:56 lobster kernel: [ 6578.779182] Modules linked in: vboxnetadp vboxnetflt vboxdrv nls_iso8859_1 nls_cp437 vfat fat aes_x86_64 aes_generic binfmt_misc bridge stp bnep input_polldev lp pata_pcmcia snd_hda_intel snd_pcm_oss arc4 snd_mixer_oss ecb snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi iwlagn pcmcia snd_rawmidi iwlcore snd_seq_midi_event snd_seq hid_logitech leds_hp_disk led_class mac80211 snd_timer snd_seq_device ff_memless video joydev iTCO_wdt snd soundcore yenta_socket rsrc_nonstatic sdhci_pci sdhci ricoh_mmc usbhid output pcspkr tpm_infineon tpm tpm_bios usb_storage psmouse ppdev serio_raw lis3lv02d parport_pc parport iTCO_vendor_support cfg80211 intel_agp snd_page_alloc btusb pcmcia_core nvidia(P) ohci1394 ieee1394 e1000e fbcon tileblit font bitblit softcursor Aug 18 10:07:56 lobster kernel: [ 6578.779220] Pid: 3606, comm: pulseaudio Tainted: P D 2.6.28-15-generic #48-Ubuntu Aug 18 10:07:56 lobster kernel: [ 6578.779221] RIP: 0010:[<ffffffffa0a93777>] [<ffffffffa0a93777>] snd_pcm_capture_poll+0x17/0xf0 [snd_pcm] Aug 18 10:07:56 lobster kernel: [ 6578.779227] RSP: 0018:ffff880131557aa8 EFLAGS: 00010246 Aug 18 10:07:56 lobster kernel: [ 6578.779229] RAX: ffff88011e049b10 RBX: 0000000000000000 RCX: 0000000000000000 Aug 18 10:07:56 lobster kernel: [ 6578.779230] RDX: 0000000000000006 RSI: 0000000000000000 RDI: ffff88010ecc0b40 Aug 18 10:07:56 lobster kernel: [ 6578.779232] RBP: ffff880131557ab8 R08: 0000000000000005 R09: ffff88010ecc0b68 Aug 18 10:07:56 lobster kernel: [ 6578.779233] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 Aug 18 10:07:56 lobster kernel: [ 6578.779234] R13: ffff88010ecc0b40 R14: 0000000000000000 R15: ffff880131557ddc Aug 18 10:07:56 lobster kernel: [ 6578.779236] FS: 00007fb80cef3950(0000) GS:ffffffff80a9a000(0000) knlGS:0000000000000000 Aug 18 10:07:56 lobster kernel: [ 6578.779238] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Aug 18 10:07:56 lobster kernel: [ 6578.779239] CR2: 00000000000000a8 CR3: 000000013d463000 CR4: 00000000000026a0 Aug 18 10:07:56 lobster kernel: [ 6578.779240] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Aug 18 10:07:56 lobster kernel: [ 6578.779242] DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000400 Aug 18 10:07:56 lobster kernel: [ 6578.779243] Process pulseaudio (pid: 3606, threadinfo ffff880131556000, task ffff8801380bc320) Aug 18 10:07:56 lobster kernel: [ 6578.779245] Stack: Aug 18 10:07:56 lobster kernel: [ 6578.779246] 0000000000000000 ffff880131557dd4 ffff880131557b48 ffffffff802f7819 Aug 18 10:07:56 lobster kernel: [ 6578.779248] 0000000000000000 ffff880131557b68 ffff880131557db8 0000000000000000 Aug 18 10:07:56 lobster kernel: [ 6578.779251] 0000000000000000 0000000031557bf8 0000000000000000 ffff880131557db8 Aug 18 10:07:56 lobster kernel: [ 6578.779255] Call Trace: Aug 18 10:07:56 lobster kernel: [ 6578.779256] [<ffffffff802f7819>] do_poll+0xe9/0x280 Aug 18 10:07:56 lobster kernel: [ 6578.779259] [<ffffffff802f7ce4>] do_sys_poll+0x134/0x200 Aug 18 10:07:56 lobster kernel: [ 6578.779261] [<ffffffff802f8740>] ? __pollwait+0x0/0x120 Aug 18 10:07:56 lobster kernel: [ 6578.779263] [<ffffffff8024a6f0>] ? default_wake_function+0x0/0x10 Aug 18 10:07:56 lobster kernel: [ 6578.779265] [<ffffffff8024a6f0>] ? default_wake_function+0x0/0x10 Aug 18 10:07:56 lobster kernel: [ 6578.779268] [<ffffffff8024a6f0>] ? default_wake_function+0x0/0x10 Aug 18 10:07:56 lobster kernel: [ 6578.779270] [<ffffffff802b8b89>] ? set_page_dirty+0x49/0xe0 Aug 18 10:07:56 lobster kernel: [ 6578.779273] [<ffffffff8023e0ef>] ? wake_affine+0xaf/0x240 Aug 18 10:07:56 lobster kernel: [ 6578.779275] [<ffffffff80270bb9>] ? getnstimeofday+0x59/0xe0 Aug 18 10:07:56 lobster kernel: [ 6578.779278] [<ffffffff80270bb9>] ? getnstimeofday+0x59/0xe0 Aug 18 10:07:56 lobster kernel: [ 6578.779280] [<ffffffffa0aca172>] ? azx_pcm_pointer+0x22/0x50 [snd_hda_intel] Aug 18 10:07:56 lobster kernel: [ 6578.779290] [<ffffffffa0a97f4b>] ? snd_pcm_update_hw_ptr+0x4b/0x270 [snd_pcm] Aug 18 10:07:56 lobster kernel: [ 6578.779295] [<ffffffffa0a92dd4>] ? snd_pcm_status+0x1a4/0x250 [snd_pcm] Aug 18 10:07:56 lobster kernel: [ 6578.779301] [<ffffffffa0a94337>] ? snd_pcm_common_ioctl1+0x187/0x770 [snd_pcm] Aug 18 10:07:56 lobster kernel: [ 6578.779306] [<ffffffffa0a9496d>] ? snd_pcm_capture_ioctl1+0x4d/0x250 [snd_pcm] Aug 18 10:07:56 lobster kernel: [ 6578.779311] [<ffffffff8023ec6a>] ? __wake_up_common+0x5a/0x90 Aug 18 10:07:56 lobster kernel: [ 6578.779314] [<ffffffff8069b741>] ? _spin_lock_irq+0x11/0x20 Aug 18 10:07:56 lobster kernel: [ 6578.779317] [<ffffffff802f7df9>] sys_ppoll+0x49/0x180 Aug 18 10:07:56 lobster kernel: [ 6578.779319] [<ffffffff802f6bd0>] ? sys_ioctl+0x80/0xa0 Aug 18 10:07:56 lobster kernel: [ 6578.779321] [<ffffffff802e83a8>] ? sys_write+0x88/0x90 Aug 18 10:07:56 lobster kernel: [ 6578.779323] [<ffffffff8021253a>] system_call_fastpath+0x16/0x1b Aug 18 10:07:56 lobster kernel: [ 6578.779326] Code: 0f 1f 40 00 4d 03 b5 b8 00 00 00 eb da 0f 1f 80 00 00 00 00 55 48 89 f1 48 85 c9 48 89 e5 41 54 53 48 8b 87 98 00 00 00 4c 8b 20 <49> 8b 9c 24 a8 00 00 00 48 8d b3 f0 00 00 00 74 0a 48 85 f6 74 Aug 18 10:07:56 lobster kernel: [ 6578.779351] RIP [<ffffffffa0a93777>] snd_pcm_capture_poll+0x17/0xf0 [snd_pcm] Aug 18 10:07:56 lobster kernel: [ 6578.779356] RSP <ffff880131557aa8> Aug 18 10:07:56 lobster kernel: [ 6578.779358] CR2: 00000000000000a8 Aug 18 10:07:56 lobster kernel: [ 6578.779359] ---[ end trace d1adddfa48d1f161 ]--- ** Summary changed: - System freeze: general protection fault: 0000 [#1] SMP + System freeze: general protection fault or kernel NULL pointer dereference -- System freeze: general protection fault or kernel NULL pointer dereference https://bugs.launchpad.net/bugs/411956 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
