Here is another extract including information from just before the freeze. Note that the kernel seems to detect the freeze, indicated by the line from rcu_sched:
Apr 14 13:14:46 ceylon rsyslogd: [origin software="rsyslogd" swVersion="5.8.6" x-pid="960" x-info="http://www.rsyslog.com";] rsyslogd was HUPed Apr 14 13:14:50 ceylon kernel: [18476.040025] sd 5:0:0:0: Queue depth not changed yet Apr 14 13:15:12 ceylon kernel: [18497.772009] ioatdma 0000:00:08.0: reset [... repeats lots of times] [... there is some output similat to my comment #42] [... something that might be of interest:] Apr 14 13:16:12 ceylon kernel: [18557.372005] ioatdma 0000:00:08.0: reset Apr 14 13:16:12 ceylon kernel: [18557.572005] ioatdma 0000:00:08.0: reset Apr 14 13:16:12 ceylon kernel: [18557.772001] INFO: rcu_sched detected stall on CPU 1 (t=15000 jiffies) Apr 14 13:16:12 ceylon kernel: [18557.772002] sending NMI to all CPUs: Apr 14 13:16:12 ceylon kernel: [18557.772002] NMI backtrace for cpu 1 Apr 14 13:16:12 ceylon kernel: [18557.772002] CPU 1 Apr 14 13:16:12 ceylon kernel: [18557.772002] Modules linked in: rfcomm bnep bluetooth binfmt_misc ext2 vesafb nvidia(P) snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device snd soundcore snd_page_alloc i5000_edac edac_core i5k_amb ioatdma psmouse ppdev dca mac_hid parport_pc shpchp serio_raw tpm_infineon tpm_tis lp parport usbhid hid usb_storage floppy firewire_ohci firewire_core crc_itu_t mptsas mptscsih mptbase scsi_transport_sas e1000e Apr 14 13:16:12 ceylon kernel: [18557.772002] Apr 14 13:16:12 ceylon kernel: [18557.772002] Pid: 6677, comm: package-data-do Tainted: P W O 3.2.0-40-generic #64-Ubuntu FUJITSU SIEMENS CELSIUS R640 /D1808 Apr 14 13:16:12 ceylon kernel: [18557.772002] RIP: 0010:[<ffffffff81319e31>] [<ffffffff81319e31>] __const_udelay+0x1/0x30 Apr 14 13:16:12 ceylon kernel: [18557.772002] RSP: 0018:ffff88023fc83da8 EFLAGS: 00000046 Apr 14 13:16:12 ceylon kernel: [18557.772002] RAX: 0000000000000000 RBX: 0000000000002710 RCX: 0000000000000004 Apr 14 13:16:12 ceylon kernel: [18557.772002] RDX: 0000000000000000 RSI: 0000000000000100 RDI: 0000000000418958 Apr 14 13:16:12 ceylon kernel: [18557.772002] RBP: ffff88023fc83dc8 R08: 000000000003ffff R09: 0000000000000000 Apr 14 13:16:12 ceylon kernel: [18557.772002] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff81c31c00 Apr 14 13:16:12 ceylon kernel: [18557.772002] R13: ffffffff81c31d00 R14: ffff88023fc8e7c0 R15: 0000000000000000 Apr 14 13:16:12 ceylon kernel: [18557.772002] FS: 00007fa71f6d9700(0000) GS:ffff88023fc80000(0000) knlGS:0000000000000000 Apr 14 13:16:12 ceylon kernel: [18557.772002] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Apr 14 13:16:12 ceylon kernel: [18557.772002] CR2: 0000000002508fc8 CR3: 000000020dcde000 CR4: 00000000000006e0 Apr 14 13:16:12 ceylon kernel: [18557.772002] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Apr 14 13:16:12 ceylon kernel: [18557.772002] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Apr 14 13:16:12 ceylon kernel: [18557.772002] Process package-data-do (pid: 6677, threadinfo ffff88020dc0c000, task ffff880210e90000) Apr 14 13:16:12 ceylon kernel: [18557.772002] Stack: Apr 14 13:16:12 ceylon kernel: [18557.772002] ffff88023fc83dc8 ffffffff81033732 00179b973e000000 ffffffff81c31c00 Apr 14 13:16:12 ceylon kernel: [18557.772002] ffff88023fc83de8 ffffffff810e1b77 ffff88023fc8e2d0 ffff88023fc8ec40 Apr 14 13:16:12 ceylon kernel: [18557.772002] ffff88023fc83e18 ffffffff810e1c08 ffff88020dc0da38 0000000000000001 Apr 14 13:16:12 ceylon kernel: [18557.772002] Call Trace: Apr 14 13:16:12 ceylon kernel: [18557.772002] <IRQ> Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff81033732>] ? arch_trigger_all_cpu_backtrace+0x72/0xa0 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff810e1b77>] check_cpu_stall.isra.35+0x97/0xf0 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff810e1c08>] __rcu_pending+0x38/0x1d0 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff810e2099>] rcu_check_callbacks+0x79/0x1e0 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff81079828>] update_process_times+0x48/0x90 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff8109d514>] tick_sched_timer+0x64/0xc0 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff8108fb78>] __run_hrtimer+0x78/0x1f0 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff8109d4b0>] ? tick_nohz_handler+0x100/0x100 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff8106f70d>] ? __do_softirq+0xfd/0x210 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff810904a7>] hrtimer_interrupt+0xf7/0x230 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff81668cec>] ? call_softirq+0x1c/0x30 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff81669699>] smp_apic_timer_interrupt+0x69/0x99 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff8166755e>] apic_timer_interrupt+0x6e/0x80 Apr 14 13:16:12 ceylon kernel: [18557.772002] <EOI> Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff8165e640>] ? _raw_spin_lock_bh+0x30/0x30 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffffa013f372>] ? ioat1_cleanup+0x32/0xa0 [ioatdma] Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffffa013f626>] ioat1_cleanup_event+0x16/0x30 [ioatdma] Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffffa013e06e>] ioat_dma_tx_status+0x6e/0x100 [ioatdma] Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffffa013e000>] ? 0xffffffffa013dfff Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff81585d77>] tcp_service_net_dma+0x77/0x140 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff81589a13>] tcp_recvmsg+0x333/0xaf0 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff815adbdb>] inet_recvmsg+0x6b/0x80 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff8152ce0d>] sock_recvmsg+0x11d/0x140 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff81125acd>] ? lru_cache_add_lru+0x2d/0x50 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff812f5b08>] ? blk_finish_plug+0x18/0x50 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff8111a8e9>] ? generic_file_aio_write+0x99/0xe0 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff8117900a>] ? do_sync_write+0xda/0x120 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff8153078e>] sys_recvfrom+0xee/0x170 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff81179970>] ? vfs_write+0x110/0x180 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff81179c3a>] ? sys_write+0x4a/0x90 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff81666a82>] system_call_fastpath+0x16/0x1b Apr 14 13:16:12 ceylon kernel: [18557.772002] Code: ff c8 5d c3 66 0f 1f 44 00 00 55 48 89 e5 66 66 66 66 90 ff 15 59 d7 94 00 5d c3 66 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 55 <48> 8d 04 bd 00 00 00 00 65 48 8b 14 25 18 37 01 00 48 8d 0c 12 Apr 14 13:16:12 ceylon kernel: [18557.772002] Call Trace: Apr 14 13:16:12 ceylon kernel: [18557.772002] <IRQ> [<ffffffff81033732>] ? arch_trigger_all_cpu_backtrace+0x72/0xa0 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff810e1b77>] check_cpu_stall.isra.35+0x97/0xf0 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff810e1c08>] __rcu_pending+0x38/0x1d0 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff810e2099>] rcu_check_callbacks+0x79/0x1e0 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff81079828>] update_process_times+0x48/0x90 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff8109d514>] tick_sched_timer+0x64/0xc0 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff8108fb78>] __run_hrtimer+0x78/0x1f0 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff8109d4b0>] ? tick_nohz_handler+0x100/0x100 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff8106f70d>] ? __do_softirq+0xfd/0x210 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff810904a7>] hrtimer_interrupt+0xf7/0x230 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff81668cec>] ? call_softirq+0x1c/0x30 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff81669699>] smp_apic_timer_interrupt+0x69/0x99 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff8166755e>] apic_timer_interrupt+0x6e/0x80 Apr 14 13:16:12 ceylon kernel: [18557.772002] <EOI> [<ffffffff8165e640>] ? _raw_spin_lock_bh+0x30/0x30 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffffa013f372>] ? ioat1_cleanup+0x32/0xa0 [ioatdma] Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffffa013f626>] ioat1_cleanup_event+0x16/0x30 [ioatdma] Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffffa013e06e>] ioat_dma_tx_status+0x6e/0x100 [ioatdma] Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffffa013e000>] ? 0xffffffffa013dfff Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff81585d77>] tcp_service_net_dma+0x77/0x140 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff81589a13>] tcp_recvmsg+0x333/0xaf0 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff815adbdb>] inet_recvmsg+0x6b/0x80 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff8152ce0d>] sock_recvmsg+0x11d/0x140 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff81125acd>] ? lru_cache_add_lru+0x2d/0x50 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff812f5b08>] ? blk_finish_plug+0x18/0x50 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff8111a8e9>] ? generic_file_aio_write+0x99/0xe0 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff8117900a>] ? do_sync_write+0xda/0x120 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff8153078e>] sys_recvfrom+0xee/0x170 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff81179970>] ? vfs_write+0x110/0x180 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff81179c3a>] ? sys_write+0x4a/0x90 Apr 14 13:16:12 ceylon kernel: [18557.772002] [<ffffffff81666a82>] system_call_fastpath+0x16/0x1b Apr 14 13:16:12 ceylon kernel: [18557.772422] NMI backtrace for cpu 3 Apr 14 13:16:12 ceylon kernel: [18557.772425] CPU 3 Apr 14 13:16:12 ceylon kernel: [18557.772426] Modules linked in: rfcomm bnep bluetooth binfmt_misc ext2 vesafb nvidia(P) snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device snd soundcore snd_page_alloc i5000_edac edac_core i5k_amb ioatdma psmouse ppdev dca mac_hid parport_pc shpchp serio_raw tpm_infineon tpm_tis lp parport usbhid hid usb_storage floppy firewire_ohci firewire_core crc_itu_t mptsas mptscsih mptbase scsi_transport_sas e1000e Apr 14 13:16:12 ceylon kernel: [18557.772461] Apr 14 13:16:12 ceylon kernel: [18557.772464] Pid: 0, comm: swapper/3 Tainted: P W O 3.2.0-40-generic #64-Ubuntu FUJITSU SIEMENS CELSIUS R640 /D1808 Apr 14 13:16:12 ceylon kernel: [18557.772469] RIP: 0010:[<ffffffff810e22ed>] [<ffffffff810e22ed>] rcu_needs_cpu+0x8d/0x230 Apr 14 13:16:12 ceylon kernel: [18557.772475] RSP: 0018:ffff88023fd83ed8 EFLAGS: 00000006 Apr 14 13:16:12 ceylon kernel: [18557.772477] RAX: 0000000000000000 RBX: 0000000000000003 RCX: ffff88023fc0eb00 Apr 14 13:16:12 ceylon kernel: [18557.772480] RDX: 0000000000ce162d RSI: 0000000000000100 RDI: 0000000000000100 Apr 14 13:16:12 ceylon kernel: [18557.772482] RBP: ffff88023fd83f18 R08: ffffffff81cde868 R09: 0000000000000000 Apr 14 13:16:12 ceylon kernel: [18557.772485] R10: ffff88023fc937c0 R11: 0000000000000000 R12: ffffffff81cde860 Apr 14 13:16:12 ceylon kernel: [18557.772487] R13: 000000000000eb00 R14: 0000000000000000 R15: 0000000000000003 Apr 14 13:16:12 ceylon kernel: [18557.772490] FS: 0000000000000000(0000) GS:ffff88023fd80000(0000) knlGS:0000000000000000 Apr 14 13:16:12 ceylon kernel: [18557.772493] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b Apr 14 13:16:12 ceylon kernel: [18557.772495] CR2: 00007f90ba7d1000 CR3: 000000020db93000 CR4: 00000000000006e0 Apr 14 13:16:12 ceylon kernel: [18557.772498] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Apr 14 13:16:12 ceylon kernel: [18557.772500] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Apr 14 13:16:12 ceylon kernel: [18557.772503] Process swapper/3 (pid: 0, threadinfo ffff88023219e000, task ffff8802321a1700) Apr 14 13:16:12 ceylon kernel: [18557.772505] Stack: Apr 14 13:16:12 ceylon kernel: [18557.772507] ffff88023fd94240 000010e0d1688b4b ffff88023fd83f08 ffff88023fd8e900 Apr 14 13:16:12 ceylon kernel: [18557.772512] 0000000000000003 000010e0d1688b4b ffff88023fd8dac0 0000000000000082 Apr 14 13:16:12 ceylon kernel: [18557.772517] ffff88023fd83f78 ffffffff8109da4b 000000429eb26000 0000000000000000 Apr 14 13:16:12 ceylon kernel: [18557.772521] Call Trace: Apr 14 13:16:12 ceylon kernel: [18557.772523] <IRQ> Apr 14 13:16:12 ceylon kernel: [18557.772527] [<ffffffff8109da4b>] tick_nohz_stop_sched_tick+0x13b/0x3d0 Apr 14 13:16:12 ceylon kernel: [18557.772532] [<ffffffff81668cec>] ? call_softirq+0x1c/0x30 Apr 14 13:16:12 ceylon kernel: [18557.772535] [<ffffffff8106fa8c>] irq_exit+0x7c/0xb0 Apr 14 13:16:12 ceylon kernel: [18557.772539] [<ffffffff8166969e>] smp_apic_timer_interrupt+0x6e/0x99 Apr 14 13:16:12 ceylon kernel: [18557.772542] [<ffffffff8166755e>] apic_timer_interrupt+0x6e/0x80 Apr 14 13:16:12 ceylon kernel: [18557.772544] <EOI> Apr 14 13:16:12 ceylon kernel: [18557.772547] [<ffffffff810e2330>] ? rcu_needs_cpu+0xd0/0x230 Apr 14 13:16:12 ceylon kernel: [18557.772552] [<ffffffff8101ce35>] ? mwait_idle+0x95/0x210 Apr 14 13:16:12 ceylon kernel: [18557.772557] [<ffffffff81013236>] cpu_idle+0xd6/0x120 Apr 14 13:16:12 ceylon kernel: [18557.772562] [<ffffffff8163c284>] start_secondary+0xd9/0xdb Apr 14 13:16:12 ceylon kernel: [18557.772564] Code: e7 48 63 d0 e8 65 d2 23 00 3b 05 b3 d6 bf 00 7d 6d 39 d8 74 e1 48 63 d0 4c 89 e9 48 03 0c d5 a0 da cd 81 44 89 f2 f0 0f c1 51 08 <0f> ae f0 83 e2 01 74 c3 4a 8b 14 fd a0 da cd 81 48 c7 c0 68 ed Apr 14 13:16:12 ceylon kernel: [18557.772605] Call Trace: Apr 14 13:16:12 ceylon kernel: [18557.772607] <IRQ> [<ffffffff8109da4b>] tick_nohz_stop_sched_tick+0x13b/0x3d0 Apr 14 13:16:12 ceylon kernel: [18557.772613] [<ffffffff81668cec>] ? call_softirq+0x1c/0x30 Apr 14 13:16:12 ceylon kernel: [18557.772617] [<ffffffff8106fa8c>] irq_exit+0x7c/0xb0 Apr 14 13:16:12 ceylon kernel: [18557.772621] [<ffffffff8166969e>] smp_apic_timer_interrupt+0x6e/0x99 Apr 14 13:16:12 ceylon kernel: [18557.772625] [<ffffffff8166755e>] apic_timer_interrupt+0x6e/0x80 Apr 14 13:16:12 ceylon kernel: [18557.772628] <EOI> [<ffffffff810e2330>] ? rcu_needs_cpu+0xd0/0x230 Apr 14 13:16:12 ceylon kernel: [18557.772634] [<ffffffff8101ce35>] ? mwait_idle+0x95/0x210 Apr 14 13:16:12 ceylon kernel: [18557.772638] [<ffffffff81013236>] cpu_idle+0xd6/0x120 Apr 14 13:16:12 ceylon kernel: [18557.772642] [<ffffffff8163c284>] start_secondary+0xd9/0xdb Apr 14 13:16:12 ceylon kernel: [18557.772647] NMI backtrace for cpu 2 Apr 14 13:16:12 ceylon kernel: [18557.772651] CPU 2 Apr 14 13:16:12 ceylon kernel: [18557.772653] Modules linked in: rfcomm bnep bluetooth binfmt_misc ext2 vesafb nvidia(P) snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device snd soundcore snd_page_alloc i5000_edac edac_core i5k_amb ioatdma psmouse ppdev dca mac_hid parport_pc shpchp serio_raw tpm_infineon tpm_tis lp parport usbhid hid usb_storage floppy firewire_ohci firewire_core crc_itu_t mptsas mptscsih mptbase scsi_transport_sas e1000e Apr 14 13:16:12 ceylon kernel: [18557.772697] Apr 14 13:16:12 ceylon kernel: [18557.772700] Pid: 0, comm: swapper/2 Tainted: P W O 3.2.0-40-generic #64-Ubuntu FUJITSU SIEMENS CELSIUS R640 /D1808 Apr 14 13:16:12 ceylon kernel: [18557.772705] RIP: 0010:[<ffffffff8103ebbd>] [<ffffffff8103ebbd>] __ticket_spin_lock+0xd/0x30 Apr 14 13:16:12 ceylon kernel: [18557.772715] RSP: 0018:ffff88023fd03db0 EFLAGS: 00000002 Apr 14 13:16:12 ceylon kernel: [18557.772717] RAX: 00000000665d665d RBX: 0000000000000082 RCX: 0000000000000002 Apr 14 13:16:12 ceylon kernel: [18557.772720] RDX: 000000000000823e RSI: 0000000000000082 RDI: ffffffff81c32300 Apr 14 13:16:12 ceylon kernel: [18557.772722] RBP: ffff88023fd03db0 R08: 0000000000008000 R09: 0000000000000000 Apr 14 13:16:12 ceylon kernel: [18557.772725] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 Apr 14 13:16:12 ceylon kernel: [18557.772727] R13: ffffffff81c31c00 R14: ffffffff810e10b0 R15: ffffffff81c32d00 Apr 14 13:16:12 ceylon kernel: [18557.772730] FS: 0000000000000000(0000) GS:ffff88023fd00000(0000) knlGS:0000000000000000 Apr 14 13:16:12 ceylon kernel: [18557.772733] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b Apr 14 13:16:12 ceylon kernel: [18557.772736] CR2: 00007f900f6ec000 CR3: 00000002077bb000 CR4: 00000000000006e0 Apr 14 13:16:12 ceylon kernel: [18557.772738] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Apr 14 13:16:12 ceylon kernel: [18557.772741] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Apr 14 13:16:12 ceylon kernel: [18557.772744] Process swapper/2 (pid: 0, threadinfo ffff880232188000, task ffff880232181700) Apr 14 13:16:12 ceylon kernel: [18557.772746] Stack: Apr 14 13:16:12 ceylon kernel: [18557.772749] ffff88023fd03dc0 ffffffff8103ec69 ffff88023fd03de0 ffffffff8165e72e Apr 14 13:16:12 ceylon kernel: [18557.772754] ffffffff81c32300 0000000000000000 ffff88023fd03e40 ffffffff810e0870 Apr 14 13:16:12 ceylon kernel: [18557.772759] ffff88023fd0e360 0000000000000002 0000000000000001 0000000000000082 Apr 14 13:16:12 ceylon kernel: [18557.772763] Call Trace: Apr 14 13:16:12 ceylon kernel: [18557.772766] <IRQ> Apr 14 13:16:12 ceylon kernel: [18557.772770] [<ffffffff8103ec69>] default_spin_lock_flags+0x9/0x10 Apr 14 13:16:12 ceylon kernel: [18557.772776] [<ffffffff8165e72e>] _raw_spin_lock_irqsave+0x2e/0x40 Apr 14 13:16:12 ceylon kernel: [18557.772782] [<ffffffff810e0870>] force_qs_rnp+0x40/0x160 Apr 14 13:16:12 ceylon kernel: [18557.772786] [<ffffffff810e12ec>] force_quiescent_state+0x18c/0x3a0 Apr 14 13:16:12 ceylon kernel: [18557.772790] [<ffffffff810e17d5>] __rcu_process_callbacks+0xd5/0x130 Apr 14 13:16:12 ceylon kernel: [18557.772793] [<ffffffff810e1863>] rcu_process_callbacks+0x33/0x100 Apr 14 13:16:12 ceylon kernel: [18557.772798] [<ffffffff8106f6b8>] __do_softirq+0xa8/0x210 Apr 14 13:16:12 ceylon kernel: [18557.772802] [<ffffffff8109d0b4>] ? tick_program_event+0x24/0x30 Apr 14 13:16:12 ceylon kernel: [18557.772806] [<ffffffff81668cec>] call_softirq+0x1c/0x30 Apr 14 13:16:12 ceylon kernel: [18557.772811] [<ffffffff81016305>] do_softirq+0x65/0xa0 Apr 14 13:16:12 ceylon kernel: [18557.772814] [<ffffffff8106fa9e>] irq_exit+0x8e/0xb0 Apr 14 13:16:12 ceylon kernel: [18557.772818] [<ffffffff8166969e>] smp_apic_timer_interrupt+0x6e/0x99 Apr 14 13:16:12 ceylon kernel: [18557.772822] [<ffffffff8166755e>] apic_timer_interrupt+0x6e/0x80 Apr 14 13:16:12 ceylon kernel: [18557.772824] <EOI> Apr 14 13:16:12 ceylon kernel: [18557.772827] [<ffffffff810e2330>] ? rcu_needs_cpu+0xd0/0x230 Apr 14 13:16:12 ceylon kernel: [18557.772832] [<ffffffff8101ce35>] ? mwait_idle+0x95/0x210 Apr 14 13:16:12 ceylon kernel: [18557.772835] [<ffffffff81013236>] cpu_idle+0xd6/0x120 Apr 14 13:16:12 ceylon kernel: [18557.772840] [<ffffffff8163c284>] start_secondary+0xd9/0xdb Apr 14 13:16:12 ceylon kernel: [18557.772842] Code: c1 c1 e9 03 81 48 c7 c2 be e9 03 81 e9 dd fe ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 55 b8 00 00 01 00 48 89 e5 f0 0f c1 07 <89> c2 c1 ea 10 66 39 c2 74 13 66 0f 1f 84 00 00 00 00 00 f3 90 Apr 14 13:16:12 ceylon kernel: [18557.772883] Call Trace: Apr 14 13:16:12 ceylon kernel: [18557.772885] <IRQ> [<ffffffff8103ec69>] default_spin_lock_flags+0x9/0x10 Apr 14 13:16:12 ceylon kernel: [18557.772891] [<ffffffff8165e72e>] _raw_spin_lock_irqsave+0x2e/0x40 Apr 14 13:16:12 ceylon kernel: [18557.772896] [<ffffffff810e0870>] force_qs_rnp+0x40/0x160 Apr 14 13:16:12 ceylon kernel: [18557.772900] [<ffffffff810e12ec>] force_quiescent_state+0x18c/0x3a0 Apr 14 13:16:12 ceylon kernel: [18557.772905] [<ffffffff810e17d5>] __rcu_process_callbacks+0xd5/0x130 Apr 14 13:16:12 ceylon kernel: [18557.772909] [<ffffffff810e1863>] rcu_process_callbacks+0x33/0x100 Apr 14 13:16:12 ceylon kernel: [18557.772913] [<ffffffff8106f6b8>] __do_softirq+0xa8/0x210 Apr 14 13:16:12 ceylon kernel: [18557.772917] [<ffffffff8109d0b4>] ? tick_program_event+0x24/0x30 Apr 14 13:16:12 ceylon kernel: [18557.772921] [<ffffffff81668cec>] call_softirq+0x1c/0x30 Apr 14 13:16:12 ceylon kernel: [18557.772925] [<ffffffff81016305>] do_softirq+0x65/0xa0 Apr 14 13:16:12 ceylon kernel: [18557.772928] [<ffffffff8106fa9e>] irq_exit+0x8e/0xb0 Apr 14 13:16:12 ceylon kernel: [18557.772932] [<ffffffff8166969e>] smp_apic_timer_interrupt+0x6e/0x99 Apr 14 13:16:12 ceylon kernel: [18557.772936] [<ffffffff8166755e>] apic_timer_interrupt+0x6e/0x80 Apr 14 13:16:12 ceylon kernel: [18557.772938] <EOI> [<ffffffff810e2330>] ? rcu_needs_cpu+0xd0/0x230 Apr 14 13:16:12 ceylon kernel: [18557.772944] [<ffffffff8101ce35>] ? mwait_idle+0x95/0x210 Apr 14 13:16:12 ceylon kernel: [18557.772948] [<ffffffff81013236>] cpu_idle+0xd6/0x120 Apr 14 13:16:12 ceylon kernel: [18557.772952] [<ffffffff8163c284>] start_secondary+0xd9/0xdb Apr 14 13:16:12 ceylon kernel: [18557.772956] NMI backtrace for cpu 0 Apr 14 13:16:12 ceylon kernel: [18557.772959] CPU 0 Apr 14 13:16:12 ceylon kernel: [18557.772961] Modules linked in: rfcomm bnep bluetooth binfmt_misc ext2 vesafb nvidia(P) snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device snd soundcore snd_page_alloc i5000_edac edac_core i5k_amb ioatdma psmouse ppdev dca mac_hid parport_pc shpchp serio_raw tpm_infineon tpm_tis lp parport usbhid hid usb_storage floppy firewire_ohci firewire_core crc_itu_t mptsas mptscsih mptbase scsi_transport_sas e1000e Apr 14 13:16:12 ceylon kernel: [18557.772996] Apr 14 13:16:12 ceylon kernel: [18557.772998] Pid: 0, comm: swapper/0 Tainted: P W O 3.2.0-40-generic #64-Ubuntu FUJITSU SIEMENS CELSIUS R640 /D1808 Apr 14 13:16:12 ceylon kernel: [18557.773003] RIP: 0010:[<ffffffff8104cd58>] [<ffffffff8104cd58>] tg_load_down+0x48/0x80 Apr 14 13:16:12 ceylon kernel: [18557.773010] RSP: 0018:ffff88023fc03cc0 EFLAGS: 00000002 Apr 14 13:16:12 ceylon kernel: [18557.773012] RAX: 0000000000000001 RBX: ffffffff8104cd10 RCX: 0000000000000008 Apr 14 13:16:12 ceylon kernel: [18557.773015] RDX: ffff88022e3462a0 RSI: 0000000000000801 RDI: ffff880203587400 Apr 14 13:16:12 ceylon kernel: [18557.773017] RBP: ffff88023fc03cc0 R08: ffff88022e346ec0 R09: 0000000000000000 Apr 14 13:16:12 ceylon kernel: [18557.773020] R10: ffff88023fc937c0 R11: 0000000000000800 R12: ffffffff81e0ee00 Apr 14 13:16:12 ceylon kernel: [18557.773022] R13: ffffffff8104ca00 R14: ffff880203587400 R15: 0000000000000000 Apr 14 13:16:12 ceylon kernel: [18557.773025] FS: 0000000000000000(0000) GS:ffff88023fc00000(0000) knlGS:0000000000000000 Apr 14 13:16:12 ceylon kernel: [18557.773028] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b Apr 14 13:16:12 ceylon kernel: [18557.773031] CR2: 00007fa71c402a70 CR3: 0000000210f77000 CR4: 00000000000006f0 Apr 14 13:16:12 ceylon kernel: [18557.773033] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Apr 14 13:16:12 ceylon kernel: [18557.773036] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Apr 14 13:16:12 ceylon kernel: [18557.773038] Process swapper/0 (pid: 0, threadinfo ffffffff81c00000, task ffffffff81c0d020) Apr 14 13:16:12 ceylon kernel: [18557.773040] Stack: Apr 14 13:16:12 ceylon kernel: [18557.773042] ffff88023fc03d20 ffffffff8104c96c 0000000000000000 0000000000000001 Apr 14 13:16:12 ceylon kernel: [18557.773047] 0000000000000001 ffff8802035874f0 0000000000000400 0000000000000000 Apr 14 13:16:12 ceylon kernel: [18557.773052] ffff880207df5c00 00000000000003ff ffff88023fc937c0 00000000000003ff Apr 14 13:16:12 ceylon kernel: [18557.773056] Call Trace: Apr 14 13:16:12 ceylon kernel: [18557.773058] <IRQ> Apr 14 13:16:12 ceylon kernel: [18557.773062] [<ffffffff8104c96c>] walk_tg_tree_from+0x3c/0xd0 Apr 14 13:16:12 ceylon kernel: [18557.773067] [<ffffffff8105f734>] load_balance_fair+0x54/0x1a0 Apr 14 13:16:12 ceylon kernel: [18557.773071] [<ffffffff8165e49e>] ? _raw_spin_lock+0xe/0x20 Apr 14 13:16:12 ceylon kernel: [18557.773075] [<ffffffff8105f9b3>] load_balance+0x133/0x390 Apr 14 13:16:12 ceylon kernel: [18557.773078] [<ffffffff8105fca9>] rebalance_domains+0x99/0x180 Apr 14 13:16:12 ceylon kernel: [18557.773082] [<ffffffff8105ff18>] run_rebalance_domains+0x48/0x60 Apr 14 13:16:12 ceylon kernel: [18557.773086] [<ffffffff8106f6b8>] __do_softirq+0xa8/0x210 Apr 14 13:16:12 ceylon kernel: [18557.773089] [<ffffffff8109d0b4>] ? tick_program_event+0x24/0x30 Apr 14 13:16:12 ceylon kernel: [18557.773093] [<ffffffff81668cec>] call_softirq+0x1c/0x30 Apr 14 13:16:12 ceylon kernel: [18557.773096] [<ffffffff81016305>] do_softirq+0x65/0xa0 Apr 14 13:16:12 ceylon kernel: [18557.773099] [<ffffffff8106fa9e>] irq_exit+0x8e/0xb0 Apr 14 13:16:12 ceylon kernel: [18557.773103] [<ffffffff8166969e>] smp_apic_timer_interrupt+0x6e/0x99 Apr 14 13:16:12 ceylon kernel: [18557.773106] [<ffffffff8166755e>] apic_timer_interrupt+0x6e/0x80 Apr 14 13:16:12 ceylon kernel: [18557.773108] <EOI> Apr 14 13:16:12 ceylon kernel: [18557.773111] [<ffffffff810e2330>] ? rcu_needs_cpu+0xd0/0x230 Apr 14 13:16:12 ceylon kernel: [18557.773115] [<ffffffff8101ce35>] ? mwait_idle+0x95/0x210 Apr 14 13:16:12 ceylon kernel: [18557.773118] [<ffffffff81013236>] cpu_idle+0xd6/0x120 Apr 14 13:16:12 ceylon kernel: [18557.773124] [<ffffffff81624d8e>] rest_init+0x72/0x74 Apr 14 13:16:12 ceylon kernel: [18557.773129] [<ffffffff81cfcc06>] start_kernel+0x3b5/0x3c2 Apr 14 13:16:12 ceylon kernel: [18557.773132] [<ffffffff81cfc388>] x86_64_start_reservations+0x132/0x136 Apr 14 13:16:12 ceylon kernel: [18557.773136] [<ffffffff81cfc140>] ? early_idt_handlers+0x140/0x140 Apr 14 13:16:12 ceylon kernel: [18557.773139] [<ffffffff81cfc459>] x86_64_start_kernel+0xcd/0xdc Apr 14 13:16:12 ceylon kernel: [18557.773141] Code: 48 8d 0c f5 00 00 00 00 48 8b 14 f0 49 8b 34 f0 48 8b 82 b0 00 00 00 48 0f af 06 48 8b 32 31 d2 48 83 c6 01 48 f7 f6 48 8b 57 28 <48> 8b 14 0a 48 89 82 b0 00 00 00 31 c0 5d c3 66 0f 1f 84 00 00 Apr 14 13:16:12 ceylon kernel: [18557.773182] Call Trace: Apr 14 13:16:12 ceylon kernel: [18557.773184] <IRQ> [<ffffffff8104c96c>] walk_tg_tree_from+0x3c/0xd0 Apr 14 13:16:12 ceylon kernel: [18557.773190] [<ffffffff8105f734>] load_balance_fair+0x54/0x1a0 Apr 14 13:16:12 ceylon kernel: [18557.773194] [<ffffffff8165e49e>] ? _raw_spin_lock+0xe/0x20 Apr 14 13:16:12 ceylon kernel: [18557.773198] [<ffffffff8105f9b3>] load_balance+0x133/0x390 Apr 14 13:16:12 ceylon kernel: [18557.773203] [<ffffffff8105fca9>] rebalance_domains+0x99/0x180 Apr 14 13:16:12 ceylon kernel: [18557.773207] [<ffffffff8105ff18>] run_rebalance_domains+0x48/0x60 Apr 14 13:16:12 ceylon kernel: [18557.773211] [<ffffffff8106f6b8>] __do_softirq+0xa8/0x210 Apr 14 13:16:12 ceylon kernel: [18557.773214] [<ffffffff8109d0b4>] ? tick_program_event+0x24/0x30 Apr 14 13:16:12 ceylon kernel: [18557.773219] [<ffffffff81668cec>] call_softirq+0x1c/0x30 Apr 14 13:16:12 ceylon kernel: [18557.773223] [<ffffffff81016305>] do_softirq+0x65/0xa0 Apr 14 13:16:12 ceylon kernel: [18557.773226] [<ffffffff8106fa9e>] irq_exit+0x8e/0xb0 Apr 14 13:16:12 ceylon kernel: [18557.773230] [<ffffffff8166969e>] smp_apic_timer_interrupt+0x6e/0x99 Apr 14 13:16:12 ceylon kernel: [18557.773234] [<ffffffff8166755e>] apic_timer_interrupt+0x6e/0x80 Apr 14 13:16:12 ceylon kernel: [18557.773237] <EOI> [<ffffffff810e2330>] ? rcu_needs_cpu+0xd0/0x230 Apr 14 13:16:12 ceylon kernel: [18557.773243] [<ffffffff8101ce35>] ? mwait_idle+0x95/0x210 Apr 14 13:16:12 ceylon kernel: [18557.773247] [<ffffffff81013236>] cpu_idle+0xd6/0x120 Apr 14 13:16:12 ceylon kernel: [18557.773251] [<ffffffff81624d8e>] rest_init+0x72/0x74 Apr 14 13:16:12 ceylon kernel: [18557.773254] [<ffffffff81cfcc06>] start_kernel+0x3b5/0x3c2 Apr 14 13:16:12 ceylon kernel: [18557.773258] [<ffffffff81cfc388>] x86_64_start_reservations+0x132/0x136 Apr 14 13:16:12 ceylon kernel: [18557.773262] [<ffffffff81cfc140>] ? early_idt_handlers+0x140/0x140 Apr 14 13:16:12 ceylon kernel: [18557.773266] [<ffffffff81cfc459>] x86_64_start_kernel+0xcd/0xdc Apr 14 13:16:12 ceylon kernel: [18557.773422] ioatdma 0000:00:08.0: reset -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1154006 Title: 12.04 freezes many times daily To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1154006/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
