Note, only able to trigger with paranoid set to 0.
Was able to isolate down to two syscalls by taking a trace.
Stopping after 30000
Watchdog enabled with timeout 60s
Will auto-exit if signal storm detected
*** perf_fuzzer 0.29 *** by Vince Weaver
Linux version 3.19.0-rc5+ x86_64
Processor: Intel 6/60/3
Seeding random number generator with 1421689769
/proc/sys/kernel/perf_event_max_sample_rate currently: 100000/s
/proc/sys/kernel/perf_event_paranoid currently: 0
Logging perf_event_open() failures: no
Running fsync after every syscall: no
To reproduce, try: ./perf_fuzzer -s 30000 -r 1421689769
Pid=2303, 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:
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: 150111 Successful: 914
EPERM : 24
ENOENT : 1106
E2BIG : 16198
EBADF : 7358
EINVAL : 123817
EOPNOTSUPP : 694
Type (Hardwar mc 1/3196)(#8 0/62)(#9 0/24)(#10 0/22)(#11 0/18)14 0/16893)
Cl4 Successful: 8
Read attempts: 837 Successful: 759
Write attempts: 829 Successful: 0
Ioctl attempts: 765 Successful: 351
Mmap attempts: 914 Successful: 400
Prctl attempts: 883 Successful: 883
Fork attempts: 458 Successful: 458
Poll attempts: 866 Successful: 726
Access attempts: 944 Successful: 477
Trash mmap attempts: 875 Successful: 875
Overflows: 0
SIGIOs due to RT signal queue full: 0
[ 784.067436] BUG: unable to handle kernel paging request at 000000000000cc68
[ 784.075656] IP: [] rapl_event_update+0x82/0xb0
[ 784.082789] PGD 0
[ 784.085640] Oops: 0000 [#1] SMP
[ 784.089821] Modules linked in: fuse x86_pkg_temp_thermal intel_powerclamp intel_rapl iosf_mbi coretemp kvm snd_hda_codec_realtek snd_hda_codec_hdmi snd_hda_codec_generic snd_hda_intel crct10dif_pclmul crc32_pclmul snd_hda_controller snd_hda_codec ghash_clmulni_intel snd_hwdep i915 aesni_intel snd_pcm aes_x86_64 snd_timer lrw iTCO_wdt iTCO_vendor_support evdev gf128mul snd glue_helper psmouse ppdev xhci_pci ablk_helper pcspkr serio_raw parport_pc soundcore cryptd xhci_hcd lpc_ich tpm_tis mei_me mei tpm i2c_i801 drm_kms_helper parport mfd_core battery video drm wmi i2c_algo_bit button processor sg sr_mod cdrom sd_mod ehci_pci ahci ehci_hcd libahci libata e1000e ptp scsi_mod crc32c_intel usbcore usb_common pps_core fan thermal thermal_sys
[ 784.164146] CPU: 5 PID: 0 Comm: swapper/5 Tainted: G W 3.19.0-rc5+ #123
[ 784.173122] Hardware name: LENOVO 10AM000AUS/SHARKBAY, BIOS FBKT72AUS 01/26/2014
[ 784.181834] task: ffff880119470390 ti: ffff880119474000 task.ti: ffff880119474000
[ 784.190665] RIP: 0010:[] [] rapl_event_update+0x82/0xb0
[ 784.200530] RSP: 0000:ffff88011eb43dd0 EFLAGS: 00010046
[ 784.207075] RAX: 0000000003f8077a RBX: ffff88011eb43ddc RCX: 0000000000000020
[ 784.215532] RDX: 0000000000000000 RSI: 0000000003f8077a RDI: 0000000000000000
[ 784.224001] RBP: ffff88011eb43e08 R08: 0000000000000000 R09: 0000000000000090
[ 784.232471] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000003f80574
[ 784.240952] R13: ffff8800ce2c81a0 R14: ffff8800ce2c8000 R15: 0000000003f8077a
[ 784.249414] FS: 0000000000000000(0000) GS:ffff88011eb40000(0000) knlGS:0000000000000000
[ 784.258911] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 784.265926] CR2: 000000000000cc68 CR3: 0000000001c13000 CR4: 00000000001407e0
[ 784.274389] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 784.282869] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 784.291350] Stack:
[ 784.294326] ffff8800cda1cbe0 00000000cda1cb80 ffff8800ce2c8000 ffff8800cda1cb80
[ 784.303169] 0000000000000086 0000000000000004 ffffe8ffffd43f54 ffff88011eb43e38
[ 784.312047] ffffffff81032db8 ffff8800ce2c8000 ffffe8ffffd43d10 000000b68e0eb5a0
[ 784.320889] Call Trace:
[ 784.324325]
[ 784.326416] [] rapl_pmu_event_stop+0x98/0x120
[ 784.334741] [] rapl_pmu_event_del+0x13/0x20
[ 784.341796] [] event_sched_out.isra.73+0xf6/0x240
[ 784.349420] [] ? __perf_event_disable+0x58/0x140
[ 784.356927] [] group_sched_out+0x4d/0xd0
[ 784.363716] [] ? native_sched_clock+0x2a/0x90
[ 784.370964] [] __perf_event_disable+0x106/0x140
[ 784.378366] [] ? tick_nohz_irq_exit+0x29/0x30
[ 784.385560] [] remote_function+0x50/0x60
[ 784.392245] [] flush_smp_call_function_queue+0x62/0x140
[ 784.400323] [] generic_smp_call_function_single_interrupt+0x13/0x60
[ 784.409466] [] smp_trace_call_function_single_interrupt+0x38/0xc0
[ 784.418418] [] trace_call_function_single_interrupt+0x6d/0x80
[ 784.426989]
[ 784.429083] [] ? cpuidle_enter_state+0x65/0x160
[ 784.437316] [] ? cpuidle_enter_state+0x51/0x160
[ 784.444623] [] cpuidle_enter+0x17/0x20
[ 784.451067] [] cpu_startup_entry+0x311/0x3c0
[ 784.458060] [] start_secondary+0x140/0x150
[ 784.464880] Code: 00 00 41 8b be 48 01 00 00 48 89 de e8 d8 42 02 00 66 90 49 89 c7 4c 89 e0 4d 0f b1 7d 00 4c 39 e0 75 d6 4c 89 f8 b9 20 00 00 00 <48> 8b 15 af a0 fd 7e 4c 29 e0 65 8b 52 38 48 98 29 d1 48 d3 e0
[ 784.487063] RIP [] rapl_event_update+0x82/0xb0
[ 784.494312] RSP
[ 784.498774] CR2: 000000000000cc68
[ 784.509591] ---[ end trace 667f9b8301b0c83d ]---
[ 784.515268] Kernel panic - not syncing: Fatal exception in interrupt
[ 784.522828] Kernel Offset: 0x0 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffff9fffffff)
[ 784.534493] drm_kms_helper: panic occurred, switching back to text console
[ 784.542629] ---[ end Kernel panic - not syncing: Fatal exception in interrupt