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Date: Mon, 19 Jan 2015 13:09:32 -0500 (EST) From: Vince Weaver <vincent.weaver@...ne.edu> To: Peter Zijlstra <peterz@...radead.org> cc: Jiri Olsa <jolsa@...hat.com>, Ingo Molnar <mingo@...hat.com>, Andi Kleen <ak@...ux.intel.com>, linux-kernel@...r.kernel.org, mark.rutland@....com, Linus Torvalds <torvalds@...ux-foundation.org> Subject: Re: perf fuzzer crash [PATCH] perf: Get group events reference before moving the group On Sun, 18 Jan 2015, Vince Weaver wrote: > On Fri, 16 Jan 2015, Vince Weaver wrote: > > I've continued fuzzing all weekend, with PeterZ's patch > applied to 3.19-rc4. It has managed to stay up without crashing, > impressive. That was on my core2 system. I tried on my 3.19-rc5+Peterz-patch Haswell system and it crashes nearly instantly. Possibly because I have a lot of gratuitous debugging options enabled due to trying to debug fuzzer-found issues in the past. Here's what I get: 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 ioct [ 775.544727] ------------[ cut here ]------------ [ 775.550944] WARNING: CPU: 4 PID: 2305 at kernel/events/core.c:151 perf_remove_from_context+0x167/0x180() [ 775.558422] ------------[ cut here ]------------ [ 775.558424] WARNING: CPU: 5 PID: 2306 at kernel/events/core.c:151 perf_remove_from_context+0x167/0x180() [ 775.558441] 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 [ 775.558442] CPU: 5 PID: 2306 Comm: perf_fuzzer Not tainted 3.19.0-rc5+ #123 [ 775.558443] Hardware name: LENOVO 10AM000AUS/SHARKBAY, BIOS FBKT72AUS 01/26/2014 [ 775.558444] ffffffff81a3ef6f ffff8800cd9c3bc8 ffffffff816b62b1 0000000000000000 [ 775.558445] 0000000000000000 ffff8800cd9c3c08 ffffffff8106dcba 0000000000000286 [ 775.558446] ffff8800cf4a49d0 0000000000000001 ffff8800ce9b3800 ffff8800365de800 [ 775.558446] Call Trace: [ 775.558450] [<ffffffff816b62b1>] dump_stack+0x45/0x57 [ 775.558452] [<ffffffff8106dcba>] warn_slowpath_common+0x8a/0xc0 [ 775.558453] [<ffffffff8106ddaa>] warn_slowpath_null+0x1a/0x20 [ 775.558454] [<ffffffff81157637>] perf_remove_from_context+0x167/0x180 [ 775.558456] [<ffffffff8115ea2f>] perf_event_exit_task+0x2bf/0x330 [ 775.558458] [<ffffffff81070786>] do_exit+0x326/0xac0 [ 775.558460] [<ffffffff8107cc79>] ? get_signal+0xe9/0x770 [ 775.558461] [<ffffffff8107cee9>] ? get_signal+0x359/0x770 [ 775.558462] [<ffffffff81070fc4>] do_group_exit+0x54/0xe0 [ 775.558463] [<ffffffff8107ce26>] get_signal+0x296/0x770 [ 775.558465] [<ffffffff8105ded2>] ? __do_page_fault+0x1f2/0x580 [ 775.558467] [<ffffffff81013578>] do_signal+0x28/0xbb0 [ 775.558469] [<ffffffff8105e282>] ? do_page_fault+0x22/0x30 [ 775.558470] [<ffffffff81014170>] do_notify_resume+0x70/0x90 [ 775.558472] [<ffffffff816bf1a2>] retint_signal+0x48/0x86 [ 775.558472] ---[ end trace 667f9b8301b0c838 ]--- [ 775.807809] 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 [ 775.879242] CPU: 4 PID: 2305 Comm: perf_fuzzer Tainted: G W 3.19.0-rc5+ #123 [ 775.887958] Hardware name: LENOVO 10AM000AUS/SHARKBAY, BIOS FBKT72AUS 01/26/2014 [ 775.895894] ffffffff81a3ef6f ffff8800cefd7bc8 ffffffff816b62b1 0000000000000000 [ 775.903977] 0000000000000000 ffff8800cefd7c08 ffffffff8106dcba 0000000000000286 [ 775.911979] ffff880036c84990 0000000000000001 ffff8800cdaa20f0 ffff8800cd74d000 [ 775.920009] Call Trace: [ 775.922613] [<ffffffff816b62b1>] dump_stack+0x45/0x57 [ 775.928145] [<ffffffff8106dcba>] warn_slowpath_common+0x8a/0xc0 [ 775.934603] [<ffffffff8106ddaa>] warn_slowpath_null+0x1a/0x20 [ 775.940839] [<ffffffff81157637>] perf_remove_from_context+0x167/0x180 [ 775.947856] [<ffffffff8115ea2f>] perf_event_exit_task+0x2bf/0x330 [ 775.954480] [<ffffffff81070786>] do_exit+0x326/0xac0 [ 775.959914] [<ffffffff8107cc79>] ? get_signal+0xe9/0x770 [ 775.965724] [<ffffffff8107cee9>] ? get_signal+0x359/0x770 [ 775.971610] [<ffffffff81070fc4>] do_group_exit+0x54/0xe0 [ 775.977385] [<ffffffff8107ce26>] get_signal+0x296/0x770 [ 775.983076] [<ffffffff8105ded2>] ? __do_page_fault+0x1f2/0x580 [ 775.989402] [<ffffffff81013578>] do_signal+0x28/0xbb0 [ 775.994924] [<ffffffff8105e282>] ? do_page_fault+0x22/0x30 [ 776.000933] [<ffffffff81014170>] do_notify_resume+0x70/0x90 [ 776.006995] [<ffffffff816bf1a2>] retint_signal+0x48/0x86 [ 776.012792] ---[ end trace 667f9b8301b0c839 ]--- [ 782.600462] ------------[ cut here ]------------ [ 782.605452] WARNING: CPU: 2 PID: 0 at arch/x86/kernel/cpu/perf_event.c:1206 x86_pmu_del+0x9c/0x140() [ 782.616019] 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 [ 782.690685] CPU: 2 PID: 0 Comm: swapper/2 Tainted: G W 3.19.0-rc5+ #123 [ 782.699771] Hardware name: LENOVO 10AM000AUS/SHARKBAY, BIOS FBKT72AUS 01/26/2014 [ 782.708545] ffffffff81a25cf8 ffff88011ea83dc8 ffffffff816b62b1 0000000000000000 [ 782.717468] 0000000000000000 ffff88011ea83e08 ffffffff8106dcba ffff88011ea9cee0 [ 782.726334] 0000000000000001 ffff88011ea8bd40 ffff880118f6b800 ffff88011ea9cee0 [ 782.735206] Call Trace: [ 782.738686] <IRQ> [<ffffffff816b62b1>] dump_stack+0x45/0x57 [ 782.745740] [<ffffffff8106dcba>] warn_slowpath_common+0x8a/0xc0 [ 782.753074] [<ffffffff8106ddaa>] warn_slowpath_null+0x1a/0x20 [ 782.760154] [<ffffffff8102a8ec>] x86_pmu_del+0x9c/0x140 [ 782.766662] [<ffffffff811585b6>] event_sched_out.isra.73+0xf6/0x240 [ 782.774218] [<ffffffff81158828>] ? __perf_event_disable+0x58/0x140 [ 782.781625] [<ffffffff81158771>] group_sched_out+0x71/0xd0 [ 782.788348] [<ffffffff8101d90a>] ? native_sched_clock+0x2a/0x90 [ 782.795503] [<ffffffff811588d6>] __perf_event_disable+0x106/0x140 [ 782.802842] [<ffffffff810ea589>] ? tick_nohz_irq_exit+0x29/0x30 [ 782.810013] [<ffffffff811541b0>] remote_function+0x50/0x60 [ 782.816740] [<ffffffff810ef762>] flush_smp_call_function_queue+0x62/0x140 [ 782.824793] [<ffffffff810efd83>] generic_smp_call_function_single_interrupt+0x13/0x60 [ 782.834039] [<ffffffff81046e28>] smp_trace_call_function_single_interrupt+0x38/0xc0 [ 782.843107] [<ffffffff816bf83d>] trace_call_function_single_interrupt+0x6d/0x80 [ 782.851772] <EOI> [<ffffffff81553ca5>] ? cpuidle_enter_state+0x65/0x160 [ 782.859843] [<ffffffff81553c91>] ? cpuidle_enter_state+0x51/0x160 [ 782.867195] [<ffffffff81553e87>] cpuidle_enter+0x17/0x20 [ 782.873731] [<ffffffff810aebc1>] cpu_startup_entry+0x311/0x3c0 [ 782.880799] [<ffffffff810476b0>] start_secondary+0x140/0x150 [ 782.887705] ---[ end trace 667f9b8301b0c83a ]--- [ 782.948582] ------------[ cut here ]------------ [ 782.955444] WARNING: CPU: 1 PID: 0 at arch/x86/kernel/cpu/perf_event.c:1161 x86_pmu_stop+0xca/0xe0() [ 783.062026] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G W 3.19.0-rc5+ #123 [ 783.071617] Hardware name: LENOVO 10AM000AUS/SHARKBAY, BIOS FBKT72AUS 01/26/2014 [ 783.080904] ffffffff81a25cf8(#12 0/18)(#13 0 ffff88011ea43c58 ffffffff816b62b1/13)(#14 0/22)(> 0000000000000000 [ 783.093032] 0000000000000000 ffff88011ea43c98ose attempts: 88 ffffffff8106dcba 0000000000000000 [ 783.103833] ffff88011ea4bd40 ffff880118f6b80084 0000000000000004 ffff88011ea4c270 [ 783.115993] Call Trace: [ 783.120017] <IRQ> [<ffffffff816b62b1>] dump_stack+0x45/0x57 [ 783.128954] [<ffffffff8106dcba>] warn_slowpath_common+0x8a/0xc0 [ 783.136775] [<ffffffff8106ddaa>] warn_slowpath_null+0x1a/0x20 [ 783.144435] [<ffffffff8102a83a>] x86_pmu_stop+0xca/0xe0 [ 783.151481] [<ffffffff8102b83d>] x86_pmu_enable+0xad/0x310 [ 783.158848] [<ffffffff811584ba>] perf_pmu_enable+0x2a/0x30 [ 783.166222] [<ffffffff81029e08>] x86_pmu_commit_txn+0x78/0xa0 [ 783.173901] [<ffffffff8141357b>] ? debug_object_activate+0x14b/0x1e0 [ 783.182167] [<ffffffff810b58df>] ? __lock_acquire.isra.31+0x3af/0xfe0 [ 783.190548] [<ffffffff810b4758>] ? __lock_is_held+0x58/0x80 [ 783.198022] [<ffffffff81159340>] ? event_sched_in.isra.75+0x180/0x280 [ 783.206395] [<ffffffff811595f8>] group_sched_in+0x1b8/0x1e0 [ 783.213862] [<ffffffff8101d90a>] ? native_sched_clock+0x2a/0x90 [ 783.221687] [<ffffffff81159d0c>] __perf_event_enable+0x25c/0x2a0 [ 783.229620] [<ffffffff810ea589>] ? tick_nohz_irq_exit+0x29/0x30 [ 783.237440] [<ffffffff811541b0>] remote_function+0x50/0x60 [ 783.244840] [<ffffffff810ef762>] flush_smp_call_function_queue+0x62/0x140 [ 783.253564] [<ffffffff810efd83>] generic_smp_call_function_single_interrupt+0x13/0x60 [ 783.263453] [<ffffffff81046e28>] smp_trace_call_function_single_interrupt+0x38/0xc0 [ 783.273176] [<ffffffff816bf83d>] trace_call_function_single_interrupt+0x6d/0x80 [ 783.282518] <EOI> full: 0[<ffffffff81553ca5>] ? cpuidle_enter_state+0x65/0x160 [ 783.292114] [<ffffffff81553c91>] ? cpuidle_enter_state+0x51/0x160 [ 783.299502] [<ffffffff81553e87>] cpuidle_enter+0x17/0x20 [ 783.306059] [<ffffffff810aebc1>] cpu_startup_entry+0x311/0x3c0 [ 783.313107] [<ffffffff810476b0>] start_secondary+0x140/0x150 [ 783.320026] ---[ end trace 667f9b8301b0c83b ]--- [ 783.496936] ------------[ cut here ]------------ [ 783.502576] WARNING: CPU: 1 PID: 2783 at arch/x86/kernel/cpu/perf_event.c:1079 x86_pmu_start+0xb2/0x120() [ 783.513534] 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 [ 783.587991] CPU: 1 PID: 2783 Comm: perf_fuzzer Tainted: G W 3.19.0-rc5+ #123 [ 783.597490] Hardware name: LENOVO 10AM000AUS/SHARKBAY, BIOS FBKT72AUS 01/26/2014 [ 783.606217] ffffffff81a25cf8 ffff88011ea43c58 ffffffff816b62b1 0000000000000000 [ 783.615030] 0000000000000000 ffff88011ea43c98 ffffffff8106dcba ffff88011ea43ca8 [ 783.623826] ffff88011ea4bd40 ffff880118f6b800 0000000000000002 ffff88011ea4bf6c [ 783.632683] Call Trace: [ 783.636123] <IRQ> [<ffffffff816b62b1>] dump_stack+0x45/0x57 [ 783.643160] [<ffffffff8106dcba>] warn_slowpath_common+0x8a/0xc0 [ 783.650449] [<ffffffff8106ddaa>] warn_slowpath_null+0x1a/0x20 [ 783.657523] [<ffffffff8102b282>] x86_pmu_start+0xb2/0x120 [ 783.664225] [<ffffffff8102ba25>] x86_pmu_enable+0x295/0x310 [ 783.671072] [<ffffffff811584ba>] perf_pmu_enable+0x2a/0x30 [ 783.677867] [<ffffffff81029e08>] x86_pmu_commit_txn+0x78/0xa0 [ 783.684940] [<ffffffff81413db6>] ? debug_check_no_obj_freed+0x186/0x220 [ 783.692936] [<ffffffff810b58df>] ? __lock_acquire.isra.31+0x3af/0xfe0 [ 783.700759] [<ffffffff810b4758>] ? __lock_is_held+0x58/0x80 [ 783.707650] [<ffffffff81159340>] ? event_sched_in.isra.75+0x180/0x280 [ 783.715443] [<ffffffff811595f8>] group_sched_in+0x1b8/0x1e0 [ 783.722296] [<ffffffff8101d90a>] ? native_sched_clock+0x2a/0x90 [ 783.729510] [<ffffffff81159d0c>] __perf_event_enable+0x25c/0x2a0 [ 783.736824] [<ffffffff811541b0>] remote_function+0x50/0x60 [ 783.743600] [<ffffffff810ef762>] flush_smp_call_function_queue+0x62/0x140 [ 783.751778] [<ffffffff810efd83>] generic_smp_call_function_single_interrupt+0x13/0x60 [ 783.761049] [<ffffffff81046e28>] smp_trace_call_function_single_interrupt+0x38/0xc0 [ 783.770165] [<ffffffff816bf83d>] trace_call_function_single_interrupt+0x6d/0x80 [ 783.778835] <EOI> [ 783.780912] ---[ end trace 667f9b8301b0c83c ]--- [ 784.067436] BUG: unable to handle kernel paging request at 000000000000cc68 [ 784.075656] IP: [<ffffffff81032bb2>] 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:[<ffffffff81032bb2>] [<ffffffff81032bb2>] 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] <IRQ> [ 784.326416] [<ffffffff81032db8>] rapl_pmu_event_stop+0x98/0x120 [ 784.334741] [<ffffffff81032e53>] rapl_pmu_event_del+0x13/0x20 [ 784.341796] [<ffffffff811585b6>] event_sched_out.isra.73+0xf6/0x240 [ 784.349420] [<ffffffff81158828>] ? __perf_event_disable+0x58/0x140 [ 784.356927] [<ffffffff8115874d>] group_sched_out+0x4d/0xd0 [ 784.363716] [<ffffffff8101d90a>] ? native_sched_clock+0x2a/0x90 [ 784.370964] [<ffffffff811588d6>] __perf_event_disable+0x106/0x140 [ 784.378366] [<ffffffff810ea589>] ? tick_nohz_irq_exit+0x29/0x30 [ 784.385560] [<ffffffff811541b0>] remote_function+0x50/0x60 [ 784.392245] [<ffffffff810ef762>] flush_smp_call_function_queue+0x62/0x140 [ 784.400323] [<ffffffff810efd83>] generic_smp_call_function_single_interrupt+0x13/0x60 [ 784.409466] [<ffffffff81046e28>] smp_trace_call_function_single_interrupt+0x38/0xc0 [ 784.418418] [<ffffffff816bf83d>] trace_call_function_single_interrupt+0x6d/0x80 [ 784.426989] <EOI> [ 784.429083] [<ffffffff81553ca5>] ? cpuidle_enter_state+0x65/0x160 [ 784.437316] [<ffffffff81553c91>] ? cpuidle_enter_state+0x51/0x160 [ 784.444623] [<ffffffff81553e87>] cpuidle_enter+0x17/0x20 [ 784.451067] [<ffffffff810aebc1>] cpu_startup_entry+0x311/0x3c0 [ 784.458060] [<ffffffff810476b0>] 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 [<ffffffff81032bb2>] rapl_event_update+0x82/0xb0 [ 784.494312] RSP <ffff88011eb43dd0> [ 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 and then the machine is locked solid. Vince -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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