*** perf_fuzzer 0.28 *** by Vince Weaver
Linux version 3.15.0-rc4+ x86_64
Processor: Intel 15/6/5
Seeding random number generator with 1399657931
/proc/sys/kernel/perf_event_max_sample_rate currently: 100000/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 1399657931
Pid=1889, 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
==================================================
[ 6024.342452] ------------[ cut here ]------------
[ 6024.345863] WARNING: CPU: 0 PID: 1889 at arch/x86/kernel/cpu/perf_event.c:1082 x86_pmu_start+0x4b/0xf8()
[ 6024.345863] Modules linked in: loop snd_hda_codec_analog snd_hda_codec_generic microcode iTCO_wdt iTCO_vendor_support i915 psmouse ppdev evdev serio_raw pcspkr snd_hda_intel snd_hda_controller i2c_i801 snd_hda_codec tpm_tis drm_kms_helper tpm snd_hwdep parport_pc snd_pcm drm parport snd_timer snd acpi_cpufreq i2c_algo_bit video processor i2c_core soundcore lpc_ich thermal_sys mfd_core button sd_mod crc_t10dif sr_mod cdrom crct10dif_generic crct10dif_common ata_generic tg3 ata_piix uhci_hcd ehci_pci libata ehci_hcd scsi_mod ptp pps_core libphy floppy usbcore usb_common
[ 6024.345863] CPU: 0 PID: 1889 Comm: perf_fuzzer Not tainted 3.15.0-rc4+ #4
[ 6024.345863] Hardware name: LENOVO 88088NU/LENOVO, BIOS 2JKT37AUS 07/12/2007
[ 6024.345863] 0000000000000000 ffff88003f403dd8 ffffffff81430fbe 0000000000000000
[ 6024.345863] ffff88003f403e10 ffffffff8103c77d ffffffff81012912 ffff88003d1a1800
[ 6024.345863] ffff88003f40bb50 0000000000000004 ffff88003f40bb58 ffff88003f403e20
[ 6024.345863] Call Trace:
[ 6024.345863] [] dump_stack+0x45/0x56
[ 6024.345863] [] warn_slowpath_common+0x7f/0x98
[ 6024.345863] [] ? x86_pmu_start+0x4b/0xf8
[ 6024.345863] [] warn_slowpath_null+0x1a/0x1c
[ 6024.345863] [] x86_pmu_start+0x4b/0xf8
[ 6024.345863] [] x86_pmu_enable+0x154/0x233
[ 6024.345863] [] perf_pmu_enable+0x27/0x29
[ 6024.345863] [] perf_cpu_hrtimer_handler+0xef/0x12f
[ 6024.345863] [] ? __perf_event_task_sched_in+0x127/0x127
[ 6024.345863] [] __run_hrtimer+0x92/0x14b
[ 6024.345863] [] hrtimer_interrupt+0xe8/0x1d3
[ 6024.345863] [] local_apic_timer_interrupt+0x54/0x57
[ 6024.345863] [] smp_apic_timer_interrupt+0x30/0x41
[ 6024.345863] [] apic_timer_interrupt+0x6a/0x70
[ 6024.345863]
[ 6024.345863] ---[ end trace c6c107ef5a49f567 ]---
[ 6026.366274] hrtimer: interrupt took 3223 ns
[ 6029.584454] perf interrupt took too long (5024 > 5000), lowering kernel.perf_event_max_sample_rate to 25000
Iteration 10000
Open attempts: 222390 Successful: 879
EPERM : 15
ENOENT : 651
E2BIG : 25960
EBADF : 4046
EINVAL : 190807
ENOSPC : 17
EOPNOTSUPP : 15
Close attempts: 877 Successful: 877
Read attempts: 822 Successful: 655
Write attempts: 885 Successful: 0
Ioctl attempts: 817 Successful: 417
Mmap attempts: 879 Successful: 209
Prctl attempts: 958 Successful: 958
Fork attempts: 463 Successful: 463
Poll attempts: 910 Successful: 4
Access attempts: 917 Successful: 442
Trash mmap attempts: 877 Successful: 877
Overflows: 0
SIGIOs due to RT signal queue full: 0
[ 6034.911889] ------------[ cut here ]------------
[ 6034.913785] WARNING: CPU: 0 PID: 1889 at arch/x86/kernel/cpu/perf_event.c:116
4 x86_pmu_stop+0x6d/0xa0()
[ 6034.913785] Modules linked in: loop snd_hda_codec_analog snd_hda_codec_generic microcode iTCO_wdt iTCO_vendor_support i915 psmouse ppdev evdev serio_raw pcspkr snd_hda_intel snd_hda_controller i2c_i801 snd_hda_codec tpm_tis drm_kms_helper tpm snd_hwdep parport_pc snd_pcm drm parport snd_timer snd acpi_cpufreq i2c_algo_bit video processor i2c_core soundcore lpc_ich thermal_sys mfd_core button sd_mod crc_t10dif sr_mod cdrom crct10dif_generic crct10dif_common ata_generic tg3 ata_piix uhci_hcd ehci_pci libata ehci_hcd scsi_mod ptp pps_core libphy floppy usbcore usb_common
[ 6034.913785] CPU: 0 PID: 1889 Comm: perf_fuzzer Tainted: G W 3.15.0-rc4+ #4
[ 6034.913785] Hardware name: LENOVO 88088NU/LENOVO, BIOS 2JKT37AUS 07/12/2007
[ 6034.913785] 0000000000000000 ffff88003ac8b7a0 ffffffff81430fbe 0000000000000000
[ 6034.913785] ffff88003ac8b7d8 ffffffff8103c77d ffffffff81012034 ffff88003ac57000
[ 6034.913785] ffff88003f40bb50 0000000000000004 000000002ddbe41a ffff88003ac8b7e8
[ 6034.913785] Call Trace:
[ 6034.913785] [] dump_stack+0x45/0x56
[ 6034.913785] [] warn_slowpath_common+0x7f/0x98
[ 6034.913785] [] ? x86_pmu_stop+0x6d/0xa0
[ 6034.913785] [] warn_slowpath_null+0x1a/0x1c
[ 6034.913785] [] x86_pmu_stop+0x6d/0xa0
[ 6034.913785] [] x86_pmu_del+0x3a/0xe5
[ 6034.913785] [] event_sched_out+0x99/0x102
[ 6034.913785] [] group_sched_out+0x2b/0x7b
[ 6034.913785] [] ctx_sched_out+0xda/0xf1
[ 6034.913785] [] __perf_event_task_sched_out+0x171/0x306
[ 6034.913785] [] perf_event_task_sched_out+0x33/0x67
[ 6034.913785] [] ? perf_event_task_sched_out+0x41/0x67
[ 6034.913785] [] __schedule+0x237/0x4cd
[ 6034.913785] [] schedule+0x73/0x75
[ 6034.913785] [] schedule_hrtimeout_range_clock+0xb6/0xe6
[ 6034.913785] [] ? hrtimer_get_res+0x42/0x42
[ 6034.913785] [] ? hrtimer_start_range_ns+0x14/0x16
[ 6034.913785] [] schedule_hrtimeout_range+0x13/0x15
[ 6034.913785] [] poll_schedule_timeout+0x41/0x61
[ 6034.913785] [] do_sys_poll+0x391/0x429
[ 6034.913785] [] ? add_mm_rss_vec+0x26/0x55
[ 6034.913785] [] ? unmap_single_vma+0x356/0x5c9
[ 6034.913785] [] ? arch_install_hw_breakpoint+0x8e/0xcd
[ 6034.913785] [] ? poll_select_copy_remaining+0xf9/0xf9
[ 6034.913785] [] ? event_sched_in+0x138/0x148
[ 6034.913785] [] ? group_sched_in+0x98/0x141
[ 6034.913785] [] ? sched_clock_cpu+0x91/0xa2
[ 6034.913785] [] ? __perf_event_enable+0xf6/0x136
[ 6034.913785] [] ? remote_function+0x1c/0x45
[ 6034.913785] [] ? cpu_clock_event_add+0x1b/0x1b
[ 6034.913785] [] ? smp_call_function_single+0x7e/0x86
[ 6034.913785] [] ? task_function_call+0x49/0x53
[ 6034.913785] [] ? __perf_install_in_context+0xf2/0xf2
[ 6034.913785] [] ? perf_event_enable+0x8a/0xbf
[ 6034.913785] [] ? mutex_unlock+0x16/0x18
[ 6034.913785] [] ? read_tsc+0x9/0x19
[ 6034.913785] [] ? timespec_add_safe+0x26/0x52
[ 6034.913785] [] SyS_poll+0x50/0xb7
[ 6034.913785] [] system_call_fastpath+0x1a/0x1f
[ 6034.913785] ---[ end trace c6c107ef5a49f568 ]---