- Reproducibe case with 0.29-pre
./perf_fuzzer -t OCIRMQWPFpAi -s 50000 -r 1400007525
-
*** perf_fuzzer 0.28 *** by Vince Weaver
Linux version 3.15.0-rc1+ x86_64
Processor: Intel 6/60/3
Seeding random number generator with 1399378358
/proc/sys/kernel/perf_event_max_sample_rate currently: 6250/s
/proc/sys/kernel/perf_event_paranoid currently: 1
Logging perf_event_open() failures: no
Running fsync after every syscall: no
To reproduce, try: ./perf_fuzzer -t OCIRMQWPFpAi -s 50000 -r 1399378358
Pid=4598, sleeping 1s
==================================================
Fuzzing the following syscalls:
mmap perf_event_open close read write ioctl fork prctl poll
*NOT* Fuzzing the following syscalls:
Also attempting the following:
busy-instruction-loop accessing-perf-proc-and-sys-files trashing-the-mma
p-page
*NOT* attempting the following:
signal-handler-on-overflow
==================================================
[76576.580505] ------------[ cut here ]------------
[76576.585446] WARNING: CPU: 4 PID: 4598 at arch/x86/kernel/cpu/perf_event_intel.c:1373 intel_pmu_handle_irq+0x2a4/0x3c0()
[76576.597028] perfevents: irq loop stuck!
[76576.601156] Modules linked in: fuse x86_pkg_temp_thermal intel_powerclamp coretemp kvm snd_hda_codec_hdmi crct10dif_pclmul crc32_pclmul ghash_clmulni_intel snd_hda_codec_realtek snd_hda_codec_generic i915 aesni_intel snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep snd_pcm snd_seq snd_timer snd_seq_device tpm_tis ppdev snd aes_x86_64 parport_pc tpm evdev mei_me drm_kms_helper iTCO_wdt drm soundcore lrw gf128mul glue_helper iTCO_vendor_support wmi ablk_helper i2c_algo_bit button battery processor mei psmouse parport pcspkr serio_raw cryptd i2c_i801 video i2c_core lpc_ich mfd_core sd_mod sr_mod crc_t10dif cdrom crct10dif_common ahci libahci ehci_pci e1000e libata xhci_hcd ehci_hcd ptp crc32c_intel usbcore scsi_mod pps_core usb_common fan thermal thermal_sys
[76576.675785] CPU: 4 PID: 4598 Comm: perf_fuzzer Not tainted 3.15.0-rc1+ #104
[76576.683257] Hardware name: LENOVO 10AM000AUS/SHARKBAY, BIOS FBKT72AUS 01/26/2014
[76576.691229] 0000000000000009 ffff88011eb06cb0 ffffffff81649ca0 ffff88011eb06cf8
[76576.699279] ffff88011eb06ce8 ffffffff810646ad 0000000000000064 ffff88011eb0cbe0
[76576.707343] ffff8800c9c1d800 0000000000000040 ffff88011eb0cde0 ffff88011eb06d48
[76576.715389] Call Trace:
[76576.718009] [] dump_stack+0x45/0x56
[76576.724230] [] warn_slowpath_common+0x7d/0xa0
[76576.730682] [] warn_slowpath_fmt+0x4c/0x50
[76576.736888] [] intel_pmu_handle_irq+0x2a4/0x3c0
[76576.743541] [] ? native_write_msr_safe+0xa/0x10
[76576.750209] [] perf_event_nmi_handler+0x2b/0x50
[76576.756867] [] nmi_handle.isra.5+0xa8/0x150
[76576.763149] [] ? nmi_handle.isra.5+0x5/0x150
[76576.769543] [] do_nmi+0xd8/0x340
[76576.774799] [] end_repeat_nmi+0x1e/0x2e
[76576.780706] [] ? native_write_msr_safe+0xa/0x10
[76576.787384] [] ? native_write_msr_safe+0xa/0x10
[76576.794028] [] ? native_write_msr_safe+0xa/0x10
[76576.800659] <> [] intel_pmu_enable_event+0x21d/0x240
[76576.808304] [] x86_pmu_start+0x7a/0x100
[76576.814200] [] x86_pmu_enable+0x295/0x310
[76576.820254] [] perf_pmu_enable+0x2f/0x40
[76576.826225] [] x86_pmu_commit_txn+0x7a/0xa0
[76576.832496] [] ? __hrtimer_start_range_ns+0x19a/0x3a0
[76576.839738] [] ? __lock_acquire.isra.29+0x3bd/0xb90
[76576.846734] [] ? arch_install_hw_breakpoint+0xce/0x100
[76576.854001] [] ? event_sched_in.isra.76+0x150/0x1e0
[76576.861030] [] group_sched_in+0x1c0/0x1e0
[76576.867117] [] __perf_event_enable+0x255/0x260
[76576.873717] [] remote_function+0x40/0x50
[76576.879698] [] generic_exec_single+0x126/0x170
[76576.886210] [] ? task_clock_event_add+0x40/0x40
[76576.892894] [] smp_call_function_single+0x67/0xa0
[76576.899684] [] task_function_call+0x49/0x60
[76576.905957] [] ? perf_event_sched_in+0x90/0x90
[76576.913747] [] perf_event_enable+0x90/0xf0
[76576.921171] [] ? task_function_call+0x60/0x60
[76576.928855] [] perf_event_for_each_child+0x3f/0xb0
[76576.937001] [] perf_event_task_enable+0x4f/0x80
[76576.944851] [] SyS_prctl+0x255/0x4b0
[76576.951663] [] ? lockdep_sys_exit_thunk+0x35/0x67
[76576.959707] [] system_call_fastpath+0x1a/0x1f
[76576.967357] ---[ end trace 2b5a3d32e8d767a6 ]---
[76576.973524]
[76576.976338] CPU#4: ctrl: 0000000000000000
[76576.982445] CPU#4: status: 0000000000000000
[76576.988522] CPU#4: overflow: 0000000000000000
[76576.994597] CPU#4: fixed: 00000000000000b9
[76577.000694] CPU#4: pebs: 0000000000000000
[76577.006774] CPU#4: active: 0000000300000007
[76577.012842] CPU#4: gen-PMC0 ctrl: 000000002450123c
[76577.019480] CPU#4: gen-PMC0 count: 0000000000000001
[76577.026151] CPU#4: gen-PMC0 left: 0000ffffffffffff
[76577.032825] CPU#4: gen-PMC1 ctrl: 0000000010c101c2
[76577.039477] CPU#4: gen-PMC1 count: 00000000039f37f8
[76577.046121] CPU#4: gen-PMC1 left: 0000fffffc618a8f
[76577.052722] CPU#4: gen-PMC2 ctrl: 0000000000540800
[76577.059354] CPU#4: gen-PMC2 count: 0000000000000001
[76577.065924] CPU#4: gen-PMC2 left: 0000ffffffffffff
[76577.072474] CPU#4: gen-PMC3 ctrl: 000000000010412e
[76577.079016] CPU#4: gen-PMC3 count: 0000000000000001
[76577.091968] CPU#4: fixed-PMC0 count: 0000fffffffffffe
[76577.098320] CPU#4: fixed-PMC1 count: 0000fffcb8c081d9
[76577.104602] CPU#4: fixed-PMC2 count: 000000000288ac63
[76577.110844] perf_event_intel: clearing PMU state on CPU#4
[76577.117485] INFO: NMI handler (perf_event_nmi_handler) took too long to run: 536.956 msecs
[76577.127177] perf interrupt took too long (4196671 > 38461), lowering kernel.perf_event_max_sample_rate to 3250
[76577.138804] perf_event_intel: clearing PMU state on CPU#4
[76577.145453] perf interrupt took too long (4215989 > 71428), lowering kernel.perf_event_max_sample_rate to 1750
[76577.619546] perf interrupt took too long (4117985 > 500000), lowering kernel.perf_event_max_sample_rate to 250
-
*** perf_fuzzer 0.28 *** by Vince Weaver
Linux version 3.15.0-rc1+ x86_64
Processor: Intel 6/60/3
Seeding random number generator with 1399077851
/proc/sys/kernel/perf_event_max_sample_rate currently: 12500/s
/proc/sys/kernel/perf_event_paranoid currently: 1
Logging perf_event_open() failures: no
Running fsync after every syscall: no
To reproduce, try: ./perf_fuzzer -t OCIRMQWPFpAi -s 50000 -r 1399077851
Pid=4743, sleeping 1s
==================================================
Fuzzing the following syscalls:
mmap perf_event_open close read write ioctl fork prctl poll
*NOT* Fuzzing the following syscalls:
Also attempting the following:
busy-instruction-loop accessing-perf-proc-and-sys-files trashing-the-mmap-page
*NOT* attempting the following:
signal-handler-on-overflow
==================================================
Iteration 10000
Open attempts: 353239 Successful: 915
EPERM : 17
ENOENT : 942
E2BIG : 41017
EBADF : 6289
EACCES : 272
EINVAL : 303113
ENOSPC : 19
EOPNOTSUPP : 655
Close attempts: 876 Successful: 876
Read attempts: 881 Successful: 763
Write attempts: 844 Successful: 0
Ioctl attempts: 854 Successful: 388
Mmap attempts: 915 Successful: 289
Prctl attempts: 884 Successful: 884
Fork attempts: 445 Successful: 445
Poll attempts: 900 Successful: 7
Access attempts: 929 Successful: 466
Trash mmap attempts: 843 Successful: 843
Overflows: 0
SIGIOs due to RT signal queue full: 0
Iteration 20000
Open attempts: 336925 Successful: 913
EPERM : 19
ENOENT : 923
E2BIG : 39023
EBADF : 5522
EACCES : 247
EINVAL : 289437
ENOSPC : 144
EOPNOTSUPP : 697
Close attempts: 901 Successful: 901
Read attempts: 952 Successful: 819
Write attempts: 929 Successful: 0
Ioctl attempts: 857 Successful: 379
Mmap attempts: 913 Successful: 262
Prctl attempts: 875 Successful: 875
Fork attempts: 460 Successful: 460
Poll attempts: 885 Successful: 8
Access attempts: 927 Successful: 482
Trash mmap attempts: 889 Successful: 889
Overflows: 0
SIGIOs due to RT signal queue full: 0
[17190.202941] ------------[ cut here ]------------
[17190.207906] WARNING: CPU: 2 PID: 4743 at arch/x86/kernel/cpu/perf_event_intel.c:1373 intel_pmu_handle_irq+0x2a4/0x3c0()
[17190.219460] perfevents: irq loop stuck!
[17190.223579] Modules linked in: fuse x86_pkg_temp_thermal intel_powerclamp coretemp kvm snd_hda_codec_realtek snd_hda_codec_hdmi snd_hda_codec_generic snd_hda_intel snd_hda_controller crct10dif_pclmul snd_hda_codec crc32_pclmul snd_hwdep ghash_clmulni_intel snd_pcm aesni_intel aes_x86_64 lrw snd_seq snd_timer snd_seq_device gf128mul snd i915 glue_helper evdev soundcore drm_kms_helper mei_me iTCO_wdt iTCO_vendor_support lpc_ich battery drm ppdev psmouse serio_raw ablk_helper cryptd wmi parport_pc mei parport tpm_tis i2c_algo_bit button processor video tpm i2c_i801 i2c_core mfd_core pcspkr sd_mod sr_mod crc_t10dif cdrom crct10dif_common ehci_pci ahci xhci_hcd ehci_hcd libahci e1000e libata ptp crc32c_intel usbcore scsi_mod pps_core usb_common thermal fan thermal_sys
[17190.298419] CPU: 2 PID: 4743 Comm: perf_fuzzer Not tainted 3.15.0-rc1+ #102
[17190.305926] Hardware name: LENOVO 10AM000AUS/SHARKBAY, BIOS FBKT72AUS 01/26/2014
[17190.313906] 0000000000000009 ffff88011ea86cb0 ffffffff81649c80 ffff88011ea86cf8
[17190.322034] ffff88011ea86ce8 ffffffff810646ad 0000000000000064 ffff88011ea8cbe0
[17190.330134] ffff8800cf7a7800 0000000000000040 ffff88011ea8cde0 ffff88011ea86d48
[17190.338122] Call Trace:
[17190.340775] [] dump_stack+0x45/0x56
[17190.347023] [] warn_slowpath_common+0x7d/0xa0
[17190.353472] [] warn_slowpath_fmt+0x4c/0x50
[17190.359677] [] intel_pmu_handle_irq+0x2a4/0x3c0
[17190.366315] [] ? native_write_msr_safe+0xd/0x10
[17190.372954] [] perf_event_nmi_handler+0x2b/0x50
[17190.379629] [] nmi_handle.isra.5+0xa8/0x150
[17190.385879] [] ? nmi_handle.isra.5+0x5/0x150
[17190.392287] [] do_nmi+0xd8/0x340
[17190.397572] [] end_repeat_nmi+0x1e/0x2e
[17190.403472] [] ? native_write_msr_safe+0xa/0x10
[17190.410098] [] ? native_write_msr_safe+0xa/0x10
[17190.416765] [] ? native_write_msr_safe+0xa/0x10
[17190.423386] <> [] intel_pmu_enable_event+0x21d/0x240
[17190.431048] [] x86_pmu_start+0x7a/0x100
[17190.436992] [] x86_pmu_enable+0x295/0x310
[17190.443104] [] perf_pmu_enable+0x2f/0x40
[17190.449087] [] perf_event_context_sched_in+0x88/0xd0
[17190.456165] [] __perf_event_task_sched_in+0x1dd/0x1f0
[17190.463412] [] finish_task_switch+0xd8/0x120
[17190.469750] [] __schedule+0x2c0/0x740
[17190.475443] [] schedule+0x29/0x70
[17190.480772] [] schedule_hrtimeout_range_clock+0x13c/0x180
[17190.488331] [] ? hrtimer_get_res+0x50/0x50
[17190.494491] [] ? schedule_hrtimeout_range_clock+0xb9/0x180
[17190.502135] [] schedule_hrtimeout_range+0x13/0x20
[17190.508983] [] poll_schedule_timeout+0x49/0x70
[17190.515535] [] do_sys_poll+0x422/0x540
[17190.521354] [] ? poll_select_copy_remaining+0x130/0x130
[17190.528737] [] ? poll_select_copy_remaining+0x130/0x130
[17190.536129] [] ? poll_select_copy_remaining+0x130/0x130
[17190.543552] [] ? poll_select_copy_remaining+0x130/0x130
[17190.550915] [] ? poll_select_copy_remaining+0x130/0x130
[17190.558290] [] ? poll_select_copy_remaining+0x130/0x130
[17190.565698] [] ? poll_select_copy_remaining+0x130/0x130
[17190.573075] [] ? poll_select_copy_remaining+0x130/0x130
[17190.580488] [] ? poll_select_copy_remaining+0x130/0x130
[17190.589071] [] SyS_poll+0x65/0x100
[17190.595690] [] system_call_fastpath+0x1a/0x1f
[17190.603315] ---[ end trace d44f7960e96a18da ]---
[17190.609412]
[17190.612182] CPU#2: ctrl: 0000000000000000
[17190.618136] CPU#2: status: 0000000000000000
[17190.624190] CPU#2: overflow: 0000000000000000
[17190.630144] CPU#2: fixed: 00000000000000ba
[17190.636123] CPU#2: pebs: 0000000000000000
[17190.642042] CPU#2: active: 0000000300000001
[17190.648000] CPU#2: gen-PMC0 ctrl: 00000000004000c4
[17190.654531] CPU#2: gen-PMC0 count: 0000000000000001
[17190.661059] CPU#2: gen-PMC0 left: 0000ffffffffffff
[17190.667576] CPU#2: gen-PMC1 ctrl: 0000000000120280
[17190.674101] CPU#2: gen-PMC1 count: 0000000000005439
[17190.680623] CPU#2: gen-PMC1 left: 0000ffffffffaf43
[17190.687127] CPU#2: gen-PMC2 ctrl: 0000000000114f2e
[17190.693589] CPU#2: gen-PMC2 count: 0000000000000001
[17190.700039] CPU#2: gen-PMC2 left: 0000ffffffffffff
[17190.706455] CPU#2: gen-PMC3 ctrl: 00000000001300c0
[17190.712846] CPU#2: gen-PMC3 count: 0000000000000001
[17190.719135] CPU#2: gen-PMC3 left: 0000ffffffffffff
[17190.725357] CPU#2: fixed-PMC0 count: 0000fffffffffffe
[17190.731529] CPU#2: fixed-PMC1 count: 0000ffff192febe2
[17190.737687] CPU#2: fixed-PMC2 count: 0000000000000001
[17190.743840] perf_event_intel: clearing PMU state on CPU#2
-
*** perf_fuzzer 0.28 *** by Vince Weaver
Linux version 3.15.0-rc1+ x86_64
Processor: Intel 6/60/3
Seeding random number generator with 1398101771
/proc/sys/kernel/perf_event_max_sample_rate currently: 50000/s
/proc/sys/kernel/perf_event_paranoid currently: 1
Logging perf_event_open() failures: no
Running fsync after every syscall: no
To reproduce, try: ./perf_fuzzer -t OCIRMQWPFpAi -s 50000 -r 1398101771
Pid=11876, sleeping 1s
==================================================
Fuzzing the following syscalls:
mmap perf_event_open close read write ioctl fork prctl poll
*NOT* Fuzzing the following syscalls:
Also attempting the following:
busy-instruction-loop accessing-perf-proc-and-sys-files trashing-the-mmap-page
*NOT* attempting the following:
signal-handler-on-overflow
==================================================
Iteration 10000
Open attempts: 337104 Successful: 905
EPERM : 14
ENOENT : 919
E2BIG : 39172
EBADF : 5587
EACCES : 249
EINVAL : 289434
ENOSPC : 179
EOPNOTSUPP : 645
Close attempts: 874 Successful: 874
Read attempts: 912 Successful: 781
Write attempts: 869 Successful: 0
Ioctl attempts: 875 Successful: 404
Mmap attempts: 905 Successful: 270
Prctl attempts: 889 Successful: 889
Fork attempts: 482 Successful: 482
Poll attempts: 945 Successful: 13
Access attempts: 857 Successful: 459
Trash mmap attempts: 885 Successful: 885
Overflows: 0
SIGIOs due to RT signal queue full: 0
Iteration 20000
Open attempts: 356748 Successful: 929
EPERM : 16
ENOENT : 966
E2BIG : 41129
EBADF : 5836
EACCES : 279
EINVAL : 306820
ENOSPC : 133
EOPNOTSUPP : 640
Close attempts: 913 Successful: 913
Read attempts: 925 Successful: 793
Write attempts: 859 Successful: 0
Ioctl attempts: 908 Successful: 400
Mmap attempts: 929 Successful: 283
Prctl attempts: 853 Successful: 853
Fork attempts: 483 Successful: 483
Poll attempts: 946 Successful: 19
Access attempts: 921 Successful: 441
Trash mmap attempts: 867 Successful: 867
Overflows: 0
SIGIOs due to RT signal queue full: 0
Iteration 30000
Open attempts: 356531 Successful: 924
EPERM : 14
ENOENT : 1027
E2BIG : 41510
EBADF : 5409
EACCES : 263
EINVAL : 306288
ENOSPC : 397
EOPNOTSUPP : 699
Close attempts: 871 Successful: 871
Read attempts: 886 Successful: 772
Write attempts: 905 Successful: 0
Ioctl attempts: 912 Successful: 402
Mmap attempts: 924 Successful: 231
Prctl attempts: 958 Successful: 958
Fork attempts: 449 Successful: 449
Poll attempts: 880 Successful: 42
Access attempts: 941 Successful: 478
Trash mmap attempts: 935 Successful: 935
Overflows: 0
SIGIOs due to RT signal queue full: 0
[233086.504483] perf interrupt took too long (5017 > 5000), lowering kernel.perf_event_max_sample_rate to 25000
Iteration 40000
Open attempts: 323102 Successful: 866
EPERM : 14
ENOENT : 883
E2BIG : 37600
EBADF : 5049
EACCES : 232
EINVAL : 277485
ENOSPC : 351
EOPNOTSUPP : 622
Close attempts: 928 Successful: 928
Read attempts: 881 Successful: 726
Write attempts: 891 Successful: 0
Ioctl attempts: 889 Successful: 404
Mmap attempts: 866 Successful: 232
Prctl attempts: 882 Successful: 882
Fork attempts: 463 Successful: 463
Poll attempts: 949 Successful: 34
Access attempts: 939 Successful: 472
Trash mmap attempts: 907 Successful: 907
Overflows: 0
SIGIOs due to RT signal queue full: 0
[233108.540578] ------------[ cut here ]------------
[233108.545658] WARNING: CPU: 3 PID: 11876 at arch/x86/kernel/cpu/perf_event_intel.c:1373 intel_pmu_handle_irq+0x2a4/0x3c0()
[233108.557265] perfevents: irq loop stuck!
[233108.561443] Modules linked in: fuse x86_pkg_temp_thermal intel_powerclamp coretemp snd_hda_codec_realtek snd_hda_codec_hdmi snd_hda_codec_generic kvm snd_hda_intel snd_hda_controller crct10dif_pclmul snd_hda_codec crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 mei_me snd_hwdep snd_pcm lrw gf128mul glue_helper snd_seq i915 mei ablk_helper iTCO_wdt snd_timer cryptd snd_seq_device parport_pc iTCO_vendor_support psmouse wmi i2c_i801 pcspkr snd parport serio_raw tpm_tis drm_kms_helper lpc_ich mfd_core drm evdev tpm i2c_algo_bit button processor video battery i2c_core soundcore sg sd_mod sr_mod crc_t10dif cdrom crct10dif_common hid_generic usbhid hid ahci libahci libata ehci_pci xhci_hcd ehci_hcd e1000e scsi_mod ptp crc32c_intel usbcore pps_core usb_common fan thermal thermal_sys
[233108.636437] CPU: 3 PID: 11876 Comm: perf_fuzzer Not tainted 3.15.0-rc1+ #66
[233108.643855] Hardware name: LENOVO 10AM000AUS/SHARKBAY, BIOS FBKT72AUS 01/26/2014
[233108.651806] 0000000000000009 ffff88011eac6cb0 ffffffff8164f86d ffff88011eac6cf8
[233108.659967] ffff88011eac6ce8 ffffffff810647cd 0000000000000064 ffff88011eaccbe0
[233108.668082] ffff880004cbc000 0000000000000040 ffff88011eaccde0 ffff88011eac6d48
[233108.676239] Call Trace:
[233108.678919] [] dump_stack+0x45/0x56
[233108.685240] [] warn_slowpath_common+0x7d/0xa0
[233108.691783] [] warn_slowpath_fmt+0x4c/0x50
[233108.698068] [] ? x86_pmu_stop+0x76/0xd0
[233108.704058] [] intel_pmu_handle_irq+0x2a4/0x3c0
[233108.710799] [] ? trace_buffer_unlock_commit+0x4d/0x60
[233108.718108] [] ? ftrace_event_buffer_commit+0x8a/0xc0
[233108.725417] [] perf_event_nmi_handler+0x2b/0x50
[233108.732169] [] nmi_handle.isra.5+0xa8/0x150
[233108.738480] [] ? nmi_handle.isra.5+0x5/0x150
[233108.744912] [] do_nmi+0xd8/0x340
[233108.750267] [] end_repeat_nmi+0x1e/0x2e
[233108.756248] [] ? native_write_msr_safe+0xa/0x10
[233108.762977] [] ? native_write_msr_safe+0xa/0x10
[233108.769700] [] ? native_write_msr_safe+0xa/0x10
[233108.776456] <> [] intel_pmu_enable_event+0x21d/0x240
[233108.784264] [] x86_pmu_start+0x7a/0x100
[233108.790258] [] x86_pmu_enable+0x295/0x310
[233108.796411] [] perf_pmu_enable+0x27/0x30
[233108.802457] [] x86_pmu_commit_txn+0x7a/0xa0
[233108.808831] [] ? trace_buffer_unlock_commit+0x4d/0x60
[233108.816143] [] ? ftrace_event_buffer_commit+0x8a/0xc0
[233108.823428] [] ? __lock_acquire.isra.29+0x3bd/0xb90
[233108.830509] [] ? ftrace_raw_event_lock_acquire+0xba/0x100
[233108.838183] [] ? event_sched_in.isra.76+0x148/0x1e0
[233108.845318] [] group_sched_in+0x1c0/0x1e0
[233108.851515] [] __perf_event_enable+0x255/0x260
[233108.858151] [] remote_function+0x40/0x50
[233108.864288] [] generic_exec_single+0x126/0x170
[233108.870954] [] ? task_clock_event_add+0x40/0x40
[233108.877665] [] smp_call_function_single+0x67/0xa0
[233108.884584] [] task_function_call+0x44/0x50
[233108.890971] [] ? perf_event_sched_in+0x90/0x90
[233108.897650] [] perf_event_enable+0x90/0xf0
[233108.903936] [] ? task_function_call+0x50/0x50
[233108.910465] [] perf_event_for_each_child+0x3a/0xa0
[233108.917448] [] perf_event_task_enable+0x4f/0x80
[233108.924198] [] SyS_prctl+0x255/0x4b0
[233108.929938] [] tracesys+0xe1/0xe6
[233108.935334] ---[ end trace 01c78b8dcb064f75 ]---
[233108.940414]
[233108.942136] CPU#3: ctrl: 0000000000000000
[233108.947065] CPU#3: status: 0000000000000000
[233108.953180] CPU#3: overflow: 0000000000000000
[233108.959254] CPU#3: fixed: 00000000000000b0
[233108.965309] CPU#3: pebs: 0000000000000000
[233108.971365] CPU#3: active: 000000020000000f
[233108.977354] CPU#3: gen-PMC0 ctrl: 0000000000500030
[233108.983917] CPU#3: gen-PMC0 count: 0000000000000001
[233108.990455] CPU#3: gen-PMC0 left: 0000ffffffffffff
[233108.996937] CPU#3: gen-PMC1 ctrl: 000000000052013c
[233109.003417] CPU#3: gen-PMC1 count: 0000000000001d2e
[233109.009888] CPU#3: gen-PMC1 left: 0000ffffffffffff
[233109.016324] CPU#3: gen-PMC2 ctrl: 0000000010c001c2
[233109.022720] CPU#3: gen-PMC2 count: 000000000f44a8c7
[233109.029064] CPU#3: gen-PMC2 left: 0000fffff0bf60c5
[233109.035351] CPU#3: gen-PMC3 ctrl: 0000000000534f2e
[233109.041600] CPU#3: gen-PMC3 count: 0000fffffffe4164
[233109.047798] CPU#3: gen-PMC3 left: 000000000001be9c
[233109.054009] CPU#3: fixed-PMC0 count: 0000fffffffffffe
[233109.060247] CPU#3: fixed-PMC1 count: 0000fff95bbfd25f
[233109.066456] CPU#3: fixed-PMC2 count: 0000000000000001
[233109.072660] perf_event_intel: clearing PMU state on CPU#3