3.14-rc5 perf_event_overflow_hang

Severity

System Lockup/Hang

Found by

perf_fuzzer

Reproducible

Unknown

First noticed

3.14-rc5

Systems noticed

core2

Linux-kernel posting

21 November 2013 -- perf/poll: another perf_fuzzer lockup

8 November 2013 -- perf/tracepoint: another fuzzer generated lockup

Kernel Spews

  1. Mar  3 13:36:36 core2 kernel: [ 4178.687490] perf_fuzzer[31546]: segfault at b ip 000000000042f399 sp 00000000ff9d94f0 error 14 in perf_fuzzer[400000+d1000]
    Mar  3 13:36:36 core2 kernel: [ 4178.904372] perf_fuzzer[31551]: segfault at 536d3257 ip 000000000042f399 sp 00000000ff9d94f0 error 14 in perf_fuzzer[400000+d1000]
    Mar  3 13:36:36 core2 kernel: [ 4179.002053] perf_fuzzer[31554]: segfault at 0 ip 000000000042f399 sp 00000000ff9d94f0 error 14 in perf_fuzzer[400000+d1000]
    Mar  3 13:36:36 core2 kernel: [ 4179.045956] perf_fuzzer[31555]: segfault at 0 ip 000000000042f399 sp 00000000ff9d94f0 error 14 in perf_fuzzer[400000+d1000]
    
    *** perf_fuzzer *** by Vince Weaver
    
    Seeding random number generator with 1393871875
    Kernel max sample rate currently: 12500/s
    ==================================================
    Fuzzing the following syscalls:
    	mmap perf_event_open close read write ioctl fork prctl poll 
    *NOT* Fuzzing the following syscalls:
    	
    Also attempting the following:
    	signal-handler-on-overflow busy-instruction-loop accessing-perf-proc-and-sys-files trashing-the-mmap-page 
    *NOT* attempting the following:
    	
    ==================================================
    Iteration 10000
    	Open attempts: 377075  Successful: 909
    		EPERM : 19
    		ENOENT : 968
    		E2BIG : 40726
    		EBADF : 5466
    		EINVAL : 328191
    		ENOSPC : 216
    		EOPNOTSUPP : 580
    	Close attempts: 862  Successful: 862
    	Read attempts: 827  Successful: 686
    	Write attempts: 870  Successful: 0
    	Ioctl attempts: 884  Successful: 312
    	Mmap attempts: 909  Successful: 258
    	Prctl attempts: 941  Successful: 941
    	Fork attempts: 458  Successful: 458
    	Poll attempts: 889  Successful: 11
    	Access attempts: 941  Successful: 452
    	Trash mmap attempts: 876  Successful: 876
    	Overflows: 3
    	SIGIOs due to RT signal queue full: 0
    
    
    [ 5736.556003] ------------[ cut here ]------------
    [ 5736.556003] WARNING: CPU: 1 PID: 1636 at kernel/watchdog.c:245 watchdog_overflow_callback+0x9b/0xa6()
    [ 5736.556003] Watchdog detected hard LOCKUP on cpu 1
    [ 5736.556003] Modules linked in: cpufreq_userspace cpufreq_stats cpufreq_powersave cpufreq_conservative f71882fg mcs7830 ohci_pci usbnet evdev pcspkr psmouse serio_raw coretemp ohci_hcd i2c_nforce2 video wmi button acpi_cpufreq processor thermal_sys sg ehci_pci ehci_hcd sd_mod usbcore usb_common
    [ 5736.556003] CPU: 1 PID: 1636 Comm: perf_fuzzer Tainted: G        W    3.14.0-rc5 #32
    [ 5736.556003] Hardware name: AOpen   DE7000/nMCP7ALPx-DE R1.06 Oct.19.2012, BIOS 080015  10/19/2012
    [ 5736.556003]  00000000000000f5 ffff88011fc87bb8 ffffffff81531e61 00000000000000f5
    [ 5736.556003]  ffff88011fc87c08 ffff88011fc87bf8 ffffffff8103fce4 000078bc000078bc
    [ 5736.556003]  ffffffff810a95e0 ffff88011b37bc00 0000000000000000 ffff88011fc87d38
    [ 5736.556003] Call Trace:
    [ 5736.556003]    [] dump_stack+0x49/0x60
    [ 5736.556003]  [] warn_slowpath_common+0x81/0x9b
    [ 5736.556003]  [] ? watchdog_overflow_callback+0x9b/0xa6
    [ 5736.556003]  [] warn_slowpath_fmt+0x46/0x48
    [ 5736.556003]  [] watchdog_overflow_callback+0x9b/0xa6
    [ 5736.556003]  [] __perf_event_overflow+0x137/0x1c1
    [ 5736.556003]  [] perf_event_overflow+0x14/0x16
    [ 5736.556003]  [] intel_pmu_handle_irq+0x2c9/0x35e
    [ 5736.556003]  [] perf_event_nmi_handler+0x2d/0x4a
    [ 5736.556003]  [] nmi_handle+0x5e/0x13a
    [ 5736.556003]  [] do_nmi+0xa7/0x2be
    [ 5736.556003]  [] end_repeat_nmi+0x1e/0x2e
    [ 5736.556003]  [] ? perf_swevent_event+0x18/0x74
    [ 5736.556003]  [] ? perf_swevent_event+0x18/0x74
    [ 5736.556003]  [] ? perf_swevent_event+0x18/0x74
    [ 5736.556003]  <>  [] __perf_sw_event+0x17e/0x192
    [ 5736.556003]  [] perf_event_task_sched_out+0x43/0x66
    [ 5736.556003]  [] ? perf_event_task_sched_out+0x2f/0x66
    [ 5736.556003]  [] __schedule+0x3c4/0x4e8
    [ 5736.556003]  [] ? put_ctx+0x58/0x5d
    [ 5736.556003]  [] schedule+0x73/0x75
    [ 5736.556003]  [] do_exit+0x943/0x947
    [ 5736.556003]  [] ? sched_clock_cpu+0x8e/0xaa
    [ 5736.556003]  [] ? update_context_time+0x11/0x34
    [ 5736.556003]  [] do_group_exit+0x78/0xa0
    [ 5736.556003]  [] get_signal_to_deliver+0x46d/0x48a
    [ 5736.556003]  [] do_signal+0x46/0x5e8
    [ 5736.556003]  [] ? finish_task_switch+0x57/0xad
    [ 5736.556003]  [] ? __schedule+0x4b9/0x4e8
    [ 5736.556003]  [] do_notify_resume+0x2c/0x64
    [ 5736.556003]  [] retint_signal+0x3d/0x78
    [ 5736.556003] ---[ end trace e316e2bd7d603a0a ]---
    [ 5736.556003] perf samples too long (6336110 > 20000), lowering kernel.perf_event_max_sample_rate to 6250
    [ 5736.556003] INFO: NMI handler (perf_event_nmi_handler) took too long to run: 838.791 msecs
    [ 5736.556003] perf samples too long (6286628 > 40000), lowering kernel.perf_event_max_sample_rate to 3250
    [ 5736.556003] perf samples too long (6237530 > 76923), lowering kernel.perf_event_max_sample_rate to 1750
    [ 5736.556003] perf samples too long (6188816 > 142857), lowering kernel.perf_event_max_sample_rate to 1000
    [ 5736.556003] perf samples too long (6140483 > 250000), lowering kernel.perf_event_max_sample_rate to 500
    [ 5736.556003] perf samples too long (6092526 > 500000), lowering kernel.perf_event_max_sample_rate to 250
    
  2. Possibly related seed 1381331721 core2
    [  319.579277] perf samples too long (2519 > 2500), lowering kerne0
    [  332.220001] ------------[ cut here ]------------
    [  332.220001] WARNING: CPU: 0 PID: 2807 at kernel/watchdog.c:245 watchdog_over)
    [  332.220001] Watchdog detected hard LOCKUP on cpu 0
    [  332.220001] Modules linked in: cpufreq_userspace cpufreq_stats cpufreq_powern
    [  332.220001] CPU: 0 PID: 2807 Comm: perf_fuzzer Not tainted 3.12.0-rc4+ #76
    [  332.220001] Hardware name: AOpen   DE7000/nMCP7ALPx-DE R1.06 Oct.19.2012, BI2
    [  332.220001]  00000000000000f5 ffff88011fc07c48 ffffffff8151ab96 ffff88011fc08
    [  332.220001]  ffffffff8103cd68 ffffffff817fac92 ffffffff810a0fe3 ffff88011b310
    [  332.220001]  ffff88011fc07ef8 ffff88011fc07d58 0000000000000000 ffff88011fc08
    [  332.220001] Call Trace:
    [  332.220001]    [] ? dump_stack+0x41/0x53
    [  332.220001]  [] ? warn_slowpath_common+0x81/0x9c
    [  332.220001]  [] ? watchdog_overflow_callback+0x9b/0xa6
    [  332.220001]  [] ? warn_slowpath_fmt+0x46/0x48
    [  332.220001]  [] ? watchdog_overflow_callback+0x9/0xa6
    [  332.220001]  [] ? watchdog_overflow_callback+0x9b/0xa6
    [  332.220001]  [] ? __perf_event_overflow+0x12e/0x1ab
    [  332.220001]  [] ? intel_pmu_save_and_restart+0xe/0x22
    [  332.220001]  [] ? intel_pmu_handle_irq+0x2b8/0x34d
    [  332.220001]  [] ? ftrace_call+0x5/0x2f
    [  332.220001]  [] ? dump_trace+0x229/0x248
    [  332.220001]  [] ? perf_event_nmi_handler+0x24/0x3d
    [  332.220001]  [] ? nmi_handle+0x5e/0x13a
    [  332.220001]  [] ? rcu_nmi_enter+0x9/0x5b
    [  332.220001]  [] ? do_nmi+0xa7/0x2bd
    [  332.220001]  [] ? end_repeat_nmi+0x1e/0x2e
    [  332.220001]  [] ? dump_trace+0x229/0x248
    [  332.220001]  [] ? dump_trace+0x229/0x248
    [  332.220001]  [] ? dump_trace+0x229/0x248
    [  332.220001]  <>    [] ? perf_output_begin+0x19/07
    [  332.220001]  [] ? perf_callchain+0x102/0x1a3
    [  332.220001]  [] ? perf_prepare_sample+0x77/0x2f4
    [  332.220001]  [] ? __perf_event_overflow+0x146/0x1ab
    [  332.220001]  [] ? __perf_event_overflow+0x19c/0x1ab
    [  332.220001]  [] ? perf_tp_event+0xe9/0x1f6
    [  332.220001]  [] ? perf_swevent_overflow+0x3f/0x58
    [  332.220001]  [] ? perf_tp_event+0xe9/0x1f6
    [  332.220001]  [] ? ftrace_ops_control_func+0x9a/0xc8
    [  332.220001]  [] ? perf_event_wakeup+0x8c/0xa1
    [  332.220001]  [] ? kill_fasync+0xb/0x86
    [  332.220001]  [] ? perf_event_wakeup+0x8c/0xa1
    [  332.220001]  [] ? perf_ftrace_function_call+0xc7/0xd1
    [  332.220001]  [] ? kill_fasync+0xb/0x86
    [  332.220001]  [] ? ftrace_ops_control_func+0x9a/0xc8
    [  332.220001]  [] ? kill_fasync+0xb/0x86
    [  332.220001]  [] ? ftrace_ops_control_func+0x9a/0xc8
    [  332.220001]  [] ? ftrace_call+0x5/0x2f
    [  332.220001]  [] ? ftrace_call+0x5/0x2f
    [  332.220001]  [] ? __wake_up_common+0x16/0x84
    [  332.220001]  [] ? kill_fasync+0x10/0x86
    [  332.220001]  [] ? __wake_up+0x39/0x4c
    [  332.220001]  [] ? _raw_spin_unlock_irqrestore+0x9/0x11
    [  332.220001]  [] ? kill_fasync+0x10/0x86
    [  332.220001]  [] ? perf_event_wakeup+0x8c/0xa1
    [  332.220001]  [] ? irq_enter+0xe/0x6d
    [  332.220001]  [] ? __irq_work_run+0x5f/0x7b
    [  332.220001]  [] ? smp_trace_irq_work_interrupt+0xe/0x7e
    [  332.220001]  [] ? smp_trace_irq_work_interrupt+0x4b/0x7e
    [  332.220001]  [] ? trace_irq_work_interrupt+0x6a/0x70
    [  332.220001]    [] ? finish_task_switch+0x57/0x98
    [  332.220001]  [] ? finish_task_switch+0x46/0x98
    [  332.220001]  [] ? __schedule+0x4f7/0x54b
    [  332.220001]  [] ? schedule+0x9/0x65
    [  332.220001]  [] ? freezable_schedule+0x16/0x23
    [  332.220001]  [] ? ptrace_stop+0x13c/0x213
    [  332.220001]  [] ? __task_pid_nr_ns+0x9/0x7b
    [  332.220001]  [] ? ptrace_do_notify+0x85/0x92
    [  332.220001]  [] ? ptrace_notify+0x65/0x7a
    [  332.220001]  [] ? ptrace_report_syscall+0x27/0x77
    [  332.220001]  [] ? syscall_trace_enter+0x61/0xce
    [  332.220001]  [] ? tracesys+0x71/0xd9
    [  332.220001] ---[ end trace 7596bd3ddfbf3920 ]---
    
  3. Another possible: 1281331721 core2
    [  849.348017] ------------[ cut here ]------------
    [  849.348017] WARNING: CPU: 0 PID: 2763 at kernel/watchdog.c:245 watchdog_over)
    [  849.348017] Watchdog detected hard LOCKUP on cpu 0
    [  849.348017] Modules linked in: cpufreq_userspace cpufreq_stats cpufreq_powern
    [  849.348017] CPU: 0 PID: 2763 Comm: perf_fuzzer Not tainted 3.12.0-rc4+ #76
    [  849.348017] Hardware name: AOpen   DE7000/nMCP7ALPx-DE R1.06 Oct.19.2012, BI2
    [  849.348017]  00000000000000f5 ffff88011fc07c48 ffffffff8151ab96 ffff88011fc08
    [  849.348017]  ffffffff8103cd68 ffffffff817fac92 ffffffff810a0fe3 ffff88011b310
    [  849.348017]  ffff88011fc07ef8 ffff88011fc07d58 0000000000000000 ffff88011fc08
    [  849.348017] Call Trace:
    [  849.348017]    [] ? dump_stack+0x41/0x53
    [  849.348017]  [] ? warn_slowpath_common+0x81/0x9c
    [  849.348017]  [] ? watchdog_overflow_callback+0x9b/0xa6
    [  849.348017]  [] ? warn_slowpath_fmt+0x46/0x48
    [  849.348017]  [] ? watchdog_overflow_callback+0x9/0xa6
    [  849.348017]  [] ? watchdog_overflow_callback+0x9b/0xa6
    [  849.348017]  [] ? __perf_event_overflow+0x12e/0x1ab
    [  849.348017]  [] ? intel_pmu_save_and_restart+0xe/0x22
    [  849.348017]  [] ? intel_pmu_handle_irq+0x2b8/0x34d
    [  849.348017]  [] ? ftrace_call+0x5/0x2f
    [  849.348017]  [] ? perf_tp_event+0x88/0x1f6
    [  849.348017]  [] ? perf_event_nmi_handler+0x24/0x3d
    [  849.348017]  [] ? nmi_handle+0x5e/0x13a
    [  849.348017]  [] ? rcu_nmi_enter+0x9/0x5b
    [  849.348017]  [] ? do_nmi+0xa7/0x2bd
    [  849.348017]  [] ? end_repeat_nmi+0x1e/0x2e
    [  849.348017]  [] ? perf_tp_event+0x88/0x1f6
    [  849.348017]  [] ? perf_tp_event+0x88/0x1f6
    [  849.348017]  [] ? perf_tp_event+0x88/0x1f6
    [  849.348017]  <>    [] ? ftrace_call+0x5/0x2f
    [  849.348017]  [] ? perf_tp_event+0xe9/0x1f6
    [  849.348017]  [] ? perf_event_wakeup+0x8c/0xa1
    [  849.348017]  [] ? kill_fasync+0xb/0x86
    [  849.348017]  [] ? perf_event_wakeup+0x8c/0xa1
    [  849.348017]  [] ? perf_ftrace_function_call+0xc7/0xd1
    [  849.348017]  [] ? kill_fasync+0xb/0x86
    [  849.348017]  [] ? ftrace_ops_control_func+0x9a/0xc8
    [  849.348017]  [] ? kill_fasync+0xb/0x86
    [  849.348017]  [] ? ftrace_ops_control_func+0x9a/0xc8
    [  849.348017]  [] ? ftrace_call+0x5/0x2f
    [  849.348017]  [] ? rcu_irq_enter+0xd/0x75
    [  849.348017]  [] ? ftrace_ops_control_func+0x9a/0xc8
    [  849.348017]  [] ? ftrace_call+0x5/0x2f
    [  849.348017]  [] ? smp_trace_irq_work_interrupt+0xe/0x7e
    [  849.348017]  [] ? kill_fasync+0x10/0x86
    [  849.348017]  [] ? kill_fasync+0x10/0x86
    [  849.348017]  [] ? perf_event_wakeup+0x8c/0xa1
    [  849.348017]  [] ? irq_enter+0xe/0x6d
    [  849.348017]  [] ? __irq_work_run+0x5f/0x7b
    [  849.348017]  [] ? smp_trace_irq_work_interrupt+0xe/0x7e
    [  849.348017]  [] ? smp_trace_irq_work_interrupt+0x4b/0x7e
    [  849.348017]  [] ? trace_irq_work_interrupt+0x6a/0x70
    [  849.348017]  [] ? _raw_spin_unlock_irqrestore+0xf/0x11
    [  849.348017]  [] ? rcu_process_callbacks+0x4a4/0x4b8
    [  849.348017]  [] ? ftrace_ops_control_func+0x9a/0xc8
    [  849.348017]  [] ? run_timer_softirq+0x16/0x1ef
    [  849.348017]  [] ? rcu_bh_qs+0x9/0x22
    [  849.348017]  [] ? __do_softirq+0x102/0x208
    [  849.348017]  [] ? ftrace_call+0x5/0x2f
    [  849.348017]  [] ? call_softirq+0x1c/0x30
    [  849.348017]  [] ? do_softirq+0x38/0x6d
    [  849.348017]  [] ? irq_exit+0x45/0xa1
    [  849.348017]  [] ? smp_trace_apic_timer_interrupt+0x83/0x91
    [  849.348017]  [] ? trace_apic_timer_interrupt+0x6a/0x70
    [  849.348017]    [] ? finish_task_switch+0x57/0x98
    [  849.348017]  [] ? __schedule+0x4f7/0x54b
    [  849.348017]  [] ? schedule+0x9/0x65
    [  849.348017]  [] ? retint_careful+0xd/0x21
    
  4.   199.784001] ------------[ cut here ]------------                             
    [  199.784001] WARNING: CPU: 0 PID: 2801 at kernel/watchdog.c:245 watchdog_overflow_callback+0x9b/0xa6()                                                        
    [  199.784001] Watchdog detected hard LOCKUP on cpu 0                           
    [  199.784001] Modules linked in: cpufreq_userspace cpufreq_stats cpufreq_powersave cpufreq_conservative f71882fg evdev mcs7830 usbnet coretemp pcspkr psmouse serio_raw acpi_cpufreq wmi video ohci_pci processor button ohci_hcd i2c_nforce2 thermal_sys sg ehci_pci ehci_hcd sd_mod usbcore usb_common                       
    [  199.784001] CPU: 0 PID: 2801 Comm: perf_fuzzer Not tainted 3.12.0 #4         
    [  199.784001] Hardware name: AOpen   DE7000/nMCP7ALPx-DE R1.06 Oct.19.2012, BIOS 080015  10/19/2012                                                            
    [  199.784001]  00000000000000f5 ffff88011fc07bc8 ffffffff8151d8ec 00000000000000f5                                                                             
    [  199.784001]  ffff88011fc07c18 ffff88011fc07c08 ffffffff8103cda9 ffff88011fc07bf8                                                                             
    [  199.784001]  ffffffff810a137f ffff88011b313400 0000000000000000 ffff88011fc07d48                                                                             
    [  199.784001] Call Trace:                                                      
    [  199.784001]    [] dump_stack+0x49/0x5d                
    [  199.784001]  [] warn_slowpath_common+0x81/0x9b             
    [  199.784001]  [] ? watchdog_overflow_callback+0x9b/0xa6     
    [  199.784001]  [] warn_slowpath_fmt+0x46/0x48                
    [  199.784001]  [] watchdog_overflow_callback+0x9b/0xa6       
    [  199.784001]  [] __perf_event_overflow+0x137/0x1c1          
    [  199.784001]  [] perf_event_overflow+0x14/0x16              
    [  199.784001]  [] intel_pmu_handle_irq+0x2b8/0x34d           
    [  199.784001]  [] perf_event_nmi_handler+0x2d/0x4a           
    [  199.784001]  [] nmi_handle+0x5e/0x13a                      
    [  199.784001]  [] do_nmi+0xa8/0x2c0                          
    [  199.784001]  [] end_repeat_nmi+0x1e/0x2e                   
    [  199.784001]  [] ? _raw_spin_lock+0x26/0x2a                 
    [  199.784001]  [] ? _raw_spin_lock+0x26/0x2a                 
    [  199.784001]  [] ? _raw_spin_lock+0x26/0x2a                 
    [  199.784001]  <>  [] load_balance+0x2f2/0x609          
    [  199.784001]  [] idle_balance+0x9a/0x10c                    
    [  199.784001]  [] __schedule+0x290/0x54b                     
    [  199.784001]  [] ? __hrtimer_start_range_ns+0x2ed/0x2ff     
    [  199.784001]  [] schedule+0x64/0x66                         
    [  199.784001]  [] schedule_hrtimeout_range_clock+0xed/0x134  
    [  199.784001]  [] ? update_rmtp+0x65/0x65                    
    [  199.784001]  [] ? hrtimer_start_range_ns+0x14/0x16         
    [  199.784001]  [] schedule_hrtimeout_range+0x13/0x15         
    [  199.784001]  [] poll_schedule_timeout+0x48/0x64            
    [  199.784001]  [] do_sys_poll+0x437/0x4d5                    
    [  199.784001]  [] ? __pollwait+0xcc/0xcc                     
    [  199.784001]  [] ? __pollwait+0xcc/0xcc                     
    [  199.784001]  [] ? __pollwait+0xcc/0xcc                     
    [  199.784001]  [] ? __pollwait+0xcc/0xcc                     
    [  199.784001]  [] ? __pollwait+0xcc/0xcc                     
    [  199.784001]  [] ? __pollwait+0xcc/0xcc                     
    [  199.784001]  [] ? __pollwait+0xcc/0xcc                     
    [  199.784001]  [] ? __pollwait+0xcc/0xcc                     
    [  199.784001]  [] ? __pollwait+0xcc/0xcc                     
    [  199.784001]  [] SyS_poll+0x53/0xbc                         
    [  199.784001]  [] system_call_fastpath+0x1a/0x1f             
    [  199.784001] ---[ end trace 1de1e48ddacc5178 ]---
    
  5. [106657.412003] ------------[ cut here ]------------
    [106657.412003] WARNING: CPU: 1 PID: 4131 at kernel/watchdog.c:245 watchdog_ove)
    [106657.412003] Watchdog detected hard LOCKUP on cpu 1
    [106657.412003] Modules linked in: cpufreq_userspace cpufreq_stats cpufreq_powed
    [106657.412003] CPU: 1 PID: 4131 Comm: perf_fuzzer Not tainted 3.12.0 #2
    [106657.412003] Hardware name: AOpen   DE7000/nMCP7ALPx-DE R1.06 Oct.19.2012, B2
    [106657.412003]  00000000000000f5 ffff88011fc87c48 ffffffff8151aad6 ffff88011fc8
    [106657.412003]  ffffffff8103cd68 0000000100000000 ffffffff810a101c ffff88011b30
    [106657.412003]  ffff88011fc87ef8 ffff88011fc87d58 0000000000000000 ffff88011fc8
    [106657.412003] Call Trace:
    [106657.412003]    [] ? dump_stack+0x41/0x53
    [106657.412003]  [] ? warn_slowpath_common+0x81/0x9c
    [106657.412003]  [] ? watchdog_overflow_callback+0x9b/0xa6
    [106657.412003]  [] ? warn_slowpath_fmt+0x46/0x48
    [106657.412003]  [] ? watchdog_overflow_callback+0x9b/0xa6
    [106657.412003]  [] ? __perf_event_overflow+0x12e/0x1ab
    [106657.412003]  [] ? intel_pmu_lbr_read+0x253/0x349
    [106657.412003]  [] ? intel_pmu_handle_irq+0x2b8/0x34d
    [106657.412003]  [] ? nmi_handle+0xa8/0x13a
    [106657.412003]  [] ? perf_event_nmi_handler+0x24/0x3d
    [106657.412003]  [] ? nmi_handle+0x5e/0x13a
    [106657.412003]  [] ? do_nmi+0xa7/0x2bd
    [106657.412003]  [] ? end_repeat_nmi+0x1e/0x2e
    [106657.412003]  [] ? do_send_sig_info+0x73/0x75
    [106657.412003]  [] ? do_send_sig_info+0x73/0x75
    [106657.412003]  [] ? do_send_sig_info+0x73/0x75
    [106657.412003]  <>    [] ? send_sigio_to_task+0xeb5
    [106657.412003]  [] ? send_sigio+0xaa/0xdd
    [106657.412003]  [] ? kill_fasync+0x69/0x86
    [106657.412003]  [] ? perf_event_wakeup+0x8c/0xa1
    [106657.412003]  [] ? __irq_work_run+0x5f/0x7b
    [106657.412003]  [] ? smp_trace_irq_work_interrupt+0x4b/0x7e
    [106657.412003]  [] ? trace_irq_work_interrupt+0x6a/0x70
    [106657.412003]  [] ? _raw_spin_unlock_irqrestore+0xf/0x11
    [106657.412003]  [] ? rcu_process_callbacks+0x4a4/0x4b8
    [106657.412003]  [] ? __do_softirq+0x102/0x208
    [106657.412003]  [] ? call_softirq+0x1c/0x30
    [106657.412003]  [] ? do_softirq+0x38/0x6d
    [106657.412003]  [] ? irq_exit+0x45/0xa1
    [106657.412003]  [] ? smp_trace_apic_timer_interrupt+0x83/0x91
    [106657.412003]  [] ? trace_apic_timer_interrupt+0x6a/0x70
    [106657.412003]   
    [106657.412003] ---[ end trace ff266ee4a75ddbbf ]---
    

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