[83657.795047] INFO: rcu_preempt_state detected stalls on CPUs/tasks: {} (detected by 0, t=25088850 jiffies) [83657.795055] sending NMI to all CPUs: [83657.795061] NMI backtrace for cpu 0 [83657.795064] CPU 0 [83657.795065] Modules linked in: cpufreq_powersave fuse cpufreq_ondemand ipv6 snd_hda_codec_conexant uvcvideo videodev media v4l2_compat_ioctl32 snd_hda_intel snd_hda_codec arc4 i915 snd_hwdep drm_kms_helper snd_pcm iwlagn drm tpm_tis snd_timer thinkpad_acpi snd_page_alloc tpm tpm_bios mac80211 psmouse mei(C) snd i2c_i801 iTCO_wdt intel_agp serio_raw cfg80211 rfkill i2c_algo_bit wmi intel_gtt soundcore nvram iTCO_vendor_support e1000e evdev pcspkr i2c_core ac thermal battery video button acpi_cpufreq freq_table processor mperf ext4 mbcache jbd2 crc16 sd_mod uhci_hcd ahci libahci libata scsi_mod ehci_hcd usbcore [83657.795126] [83657.795129] Pid: 0, comm: swapper Tainted: G C 3.1.4-1-ARCH #1 LENOVO 7454CTO/7454CTO [83657.795135] RIP: 0010:[] [] delay_tsc+0x39/0x100 [83657.795144] RSP: 0018:ffff88013bc03bf8 EFLAGS: 00000006 [83657.795147] RAX: 0000000020f97f20 RBX: ffffffff81801fd8 RCX: 000000000260d0e5 [83657.795150] RDX: 000000000024877c RSI: 0000000000000002 RDI: 000000000024877d [83657.795153] RBP: ffff88013bc03c38 R08: 0000000000000000 R09: 0000000000000000 [83657.795155] R10: 0000000000000000 R11: 0000000000000001 R12: ffffffff818bd500 [83657.795158] R13: ffffffff818bd600 R14: ffffffff818bda00 R15: 0000000000000000 [83657.795162] FS: 0000000000000000(0000) GS:ffff88013bc00000(0000) knlGS:0000000000000000 [83657.795165] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [83657.795168] CR2: 00007f087500f000 CR3: 0000000001895000 CR4: 00000000000006f0 [83657.795171] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [83657.795174] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [83657.795177] Process swapper (pid: 0, threadinfo ffffffff81800000, task ffffffff8189d020) [83657.795180] Stack: [83657.795182] ffff88013bc03c18 000000000024877d 0000000000000800 0000000000002710 [83657.795187] ffffffff818bd500 ffffffff818bd600 ffffffff818bda00 0000000000000087 [83657.795192] ffff88013bc03c48 ffffffff8122fd7f ffff88013bc03c58 ffffffff8122fdc3 [83657.795197] Call Trace: [83657.795199] [83657.795209] [] __delay+0xf/0x20 [83657.795212] [] __const_udelay+0x33/0x40 [83657.795221] [] arch_trigger_all_cpu_backtrace+0x6a/0x90 [83657.795224] [] __rcu_pending+0x391/0x3c0 [83657.795227] [] rcu_check_callbacks+0x132/0x1b0 [83657.795230] [] update_process_times+0x48/0x90 [83657.795234] [] tick_sched_timer+0x64/0xc0 [83657.795237] [] __run_hrtimer+0x74/0x2c0 [83657.795240] [] ? tick_nohz_handler+0x100/0x100 [83657.795243] [] hrtimer_interrupt+0xf3/0x210 [83657.795246] [] tick_do_broadcast.constprop.1+0x45/0x90 [83657.795248] [] tick_handle_oneshot_broadcast+0xcd/0x110 [83657.795252] [] timer_interrupt+0x1d/0x30 [83657.795255] [] handle_irq_event_percpu+0x75/0x2a0 [83657.795258] [] handle_irq_event+0x48/0x70 [83657.795261] [] handle_edge_irq+0x77/0x120 [83657.795263] [] handle_irq+0x22/0x40 [83657.795267] [] do_IRQ+0x5a/0xe0 [83657.795271] [] common_interrupt+0x6e/0x6e [83657.795272] [83657.795275] [] ? native_sched_clock+0x13/0x60 [83657.795282] [] ? acpi_idle_enter_bm+0x249/0x286 [processor] [83657.795286] [] ? acpi_idle_enter_bm+0x245/0x286 [processor] [83657.795289] [] cpuidle_idle_call+0xc6/0x350 [83657.795292] [] cpu_idle+0xc9/0x120 [83657.795296] [] rest_init+0x96/0xa4 [83657.795299] [] start_kernel+0x3bf/0x3cc [83657.795301] [] x86_64_start_reservations+0x132/0x136 [83657.795304] [] ? early_idt_handlers+0x140/0x140 [83657.795307] [] x86_64_start_kernel+0x102/0x111 [83657.795308] Code: 83 ec 18 66 66 66 66 90 65 48 8b 1c 25 88 c4 00 00 48 89 7d c8 83 83 44 e0 ff ff 01 65 44 8b 3c 25 b0 d3 00 00 66 66 90 0f ae e8 d2 ce de ff 66 90 4c 63 f0 49 89 dd eb 33 0f 1f 84 00 00 00 [83657.795335] Call Trace: [83657.795336] [] __delay+0xf/0x20 [83657.795341] [] __const_udelay+0x33/0x40 [83657.795343] [] arch_trigger_all_cpu_backtrace+0x6a/0x90 [83657.795345] [] __rcu_pending+0x391/0x3c0 [83657.795348] [] rcu_check_callbacks+0x132/0x1b0 [83657.795351] [] update_process_times+0x48/0x90 [83657.795353] [] tick_sched_timer+0x64/0xc0 [83657.795356] [] __run_hrtimer+0x74/0x2c0 [83657.795358] [] ? tick_nohz_handler+0x100/0x100 [83657.795361] [] hrtimer_interrupt+0xf3/0x210 [83657.795363] [] tick_do_broadcast.constprop.1+0x45/0x90 [83657.795366] [] tick_handle_oneshot_broadcast+0xcd/0x110 [83657.795369] [] timer_interrupt+0x1d/0x30 [83657.795371] [] handle_irq_event_percpu+0x75/0x2a0 [83657.795374] [] handle_irq_event+0x48/0x70 [83657.795377] [] handle_edge_irq+0x77/0x120 [83657.795379] [] handle_irq+0x22/0x40 [83657.795382] [] do_IRQ+0x5a/0xe0 [83657.795384] [] common_interrupt+0x6e/0x6e [83657.795386] [] ? native_sched_clock+0x13/0x60 [83657.795392] [] ? acpi_idle_enter_bm+0x249/0x286 [processor] [83657.795396] [] ? acpi_idle_enter_bm+0x245/0x286 [processor] [83657.795398] [] cpuidle_idle_call+0xc6/0x350 [83657.795401] [] cpu_idle+0xc9/0x120 [83657.795404] [] rest_init+0x96/0xa4 [83657.795406] [] start_kernel+0x3bf/0x3cc [83657.795409] [] x86_64_start_reservations+0x132/0x136 [83657.795412] [] ? early_idt_handlers+0x140/0x140 [83657.795414] [] x86_64_start_kernel+0x102/0x111 [83657.795417] NMI backtrace for cpu 1 [83657.795419] CPU 1 [83657.795420] Modules linked in: cpufreq_powersave fuse cpufreq_ondemand ipv6 snd_hda_codec_conexant uvcvideo videodev media v4l2_compat_ioctl32 snd_hda_intel snd_hda_codec arc4 i915 snd_hwdep drm_kms_helper snd_pcm iwlagn drm tpm_tis snd_timer thinkpad_acpi snd_page_alloc tpm tpm_bios mac80211 psmouse mei(C) snd i2c_i801 iTCO_wdt intel_agp serio_raw cfg80211 rfkill i2c_algo_bit wmi intel_gtt soundcore nvram iTCO_vendor_support e1000e evdev pcspkr i2c_core ac thermal battery video button acpi_cpufreq freq_table processor mperf ext4 mbcache jbd2 crc16 sd_mod uhci_hcd ahci libahci libata scsi_mod ehci_hcd usbcore [83657.795453] [83657.795454] Pid: 0, comm: kworker/0:0 Tainted: G C 3.1.4-1-ARCH #1 LENOVO 7454CTO/7454CTO [83657.795458] RIP: 0010:[] [] _raw_spin_lock_irqsave+0x3a/0x50 [83657.795463] RSP: 0018:ffff880134f57d28 EFLAGS: 00000087 [83657.795464] RAX: 000000000000201f RBX: ffff88013345e80c RCX: 0000000000000001 [83657.795466] RDX: 0000000000000002 RSI: 0000000000000004 RDI: ffffffff81ac32c8 [83657.795468] RBP: ffff880134f57d28 R08: 0000000000000000 R09: 00000000000001d1 [83657.795470] R10: 0000000000071a8b R11: 0000000000000001 R12: ffff88013bc8d400 [83657.795472] R13: ffffffff818a5300 R14: 0000000000000001 R15: 0000000000000004 [83657.795474] FS: 0000000000000000(0000) GS:ffff88013bc80000(0000) knlGS:0000000000000000 [83657.795476] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [83657.795478] CR2: 00003af8cb02c000 CR3: 0000000001895000 CR4: 00000000000006e0 [83657.795480] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [83657.795482] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [83657.795484] Process kworker/0:0 (pid: 0, threadinfo ffff880134f56000, task ffff880134ec4f10) [83657.795486] Stack: [83657.795487] ffff880134f57d68 ffffffff81095c63 ffff880134f57d78 ffff88013345e80c [83657.795491] ffff88013345e80c 0000000000000001 0000000000000000 0000000000000000 [83657.795494] ffff880134f57db8 ffffffff810954dd ffff880134f57da8 ffffffff81291f8b [83657.795497] Call Trace: [83657.795500] [] tick_broadcast_oneshot_control+0x83/0x120 [83657.795503] [] tick_notify+0x34d/0x420 [83657.795507] [] ? acpi_hw_read+0x4f/0x56 [83657.795510] [] notifier_call_chain+0x4d/0x70 [83657.795513] [] raw_notifier_call_chain+0x16/0x20 [83657.795515] [] clockevents_notify+0x37/0x180 [83657.795520] [] lapic_timer_state_broadcast+0x46/0x48 [processor] [83657.795524] [] acpi_idle_enter_bm+0x15b/0x286 [processor] [83657.795527] [] cpuidle_idle_call+0xc6/0x350 [83657.795529] [] cpu_idle+0xc9/0x120 [83657.795533] [] start_secondary+0x202/0x209 [83657.795535] Code: 90 48 89 c2 fa 66 66 90 66 66 90 65 48 8b 04 25 88 c4 00 00 83 80 44 e0 ff ff 01 b8 00 01 00 00 f0 66 0f c1 07 38 e0 74 06 f3 90 <8a> 07 eb f6 48 89 d0 5d c3 66 66 66 66 2e 0f 1f 84 00 00 00 00 [83657.795561] Call Trace: [83657.795564] [] tick_broadcast_oneshot_control+0x83/0x120 [83657.795566] [] tick_notify+0x34d/0x420 [83657.795569] [] ? acpi_hw_read+0x4f/0x56 [83657.795572] [] notifier_call_chain+0x4d/0x70 [83657.795574] [] raw_notifier_call_chain+0x16/0x20 [83657.795577] [] clockevents_notify+0x37/0x180 [83657.795581] [] lapic_timer_state_broadcast+0x46/0x48 [processor] [83657.795585] [] acpi_idle_enter_bm+0x15b/0x286 [processor] [83657.795587] [] cpuidle_idle_call+0xc6/0x350 [83657.795590] [] cpu_idle+0xc9/0x120 [83657.795593] [] start_secondary+0x202/0x209[83657.795047]