[ 0.000000] Linux version 4.5.0-rc1+ (root@insomnia) (gcc version 5.3.0 (GCC) ) #14 SMP PREEMPT Wed Mar 30 20:01:04 CST 2016 [ 0.000000] Command line: selinux=0 console=ttyS0 rcutorture.onoff_interval=1 rcutorture.onff_holdoff=30 [ 0.000000] x86/fpu: Legacy x87 FPU detected. [ 0.000000] x86/fpu: Using 'lazy' FPU context switches. [ 0.000000] e820: BIOS-provided physical RAM map: [ 0.000000] BIOS-e820: [mem 0x0000000000000000-0x000000000009fbff] usable [ 0.000000] BIOS-e820: [mem 0x000000000009fc00-0x000000000009ffff] reserved [ 0.000000] BIOS-e820: [mem 0x00000000000f0000-0x00000000000fffff] reserved [ 0.000000] BIOS-e820: [mem 0x0000000000100000-0x000000007ffdefff] usable [ 0.000000] BIOS-e820: [mem 0x000000007ffdf000-0x000000007fffffff] reserved [ 0.000000] BIOS-e820: [mem 0x00000000feffc000-0x00000000feffffff] reserved [ 0.000000] BIOS-e820: [mem 0x00000000fffc0000-0x00000000ffffffff] reserved [ 0.000000] NX (Execute Disable) protection: active [ 0.000000] SMBIOS 2.8 present. [ 0.000000] e820: last_pfn = 0x7ffdf max_arch_pfn = 0x400000000 [ 0.000000] x86/PAT: Configuration [0-7]: WB WC UC- UC WB WC UC- WT [ 0.000000] found SMP MP-table at [mem 0x000f6a50-0x000f6a5f] mapped at [ffff8800000f6a50] [ 0.000000] Scanning 1 areas for low memory corruption [ 0.000000] Using GB pages for direct mapping [ 0.000000] RAMDISK: [mem 0x7fcd4000-0x7ffcffff] [ 0.000000] ACPI: Early table checksum verification disabled [ 0.000000] ACPI: RSDP 0x00000000000F6A00 000014 (v00 BOCHS ) [ 0.000000] ACPI: RSDT 0x000000007FFE1580 000034 (v01 BOCHS BXPCRSDT 00000001 BXPC 00000001) [ 0.000000] ACPI: FACP 0x000000007FFE061A 000074 (v01 BOCHS BXPCFACP 00000001 BXPC 00000001) [ 0.000000] ACPI: DSDT 0x000000007FFDFA80 000B9A (v01 BOCHS BXPCDSDT 00000001 BXPC 00000001) [ 0.000000] ACPI: FACS 0x000000007FFDFA40 000040 [ 0.000000] ACPI: SSDT 0x000000007FFE068E 000DCA (v01 BOCHS BXPCSSDT 00000001 BXPC 00000001) [ 0.000000] ACPI: APIC 0x000000007FFE1458 0000F0 (v01 BOCHS BXPCAPIC 00000001 BXPC 00000001) [ 0.000000] ACPI: HPET 0x000000007FFE1548 000038 (v01 BOCHS BXPCHPET 00000001 BXPC 00000001) [ 0.000000] No NUMA configuration found [ 0.000000] Faking a node at [mem 0x0000000000000000-0x000000007ffdefff] [ 0.000000] NODE_DATA(0) allocated [mem 0x7ffdb000-0x7ffdefff] [ 0.000000] Zone ranges: [ 0.000000] DMA [mem 0x0000000000001000-0x0000000000ffffff] [ 0.000000] DMA32 [mem 0x0000000001000000-0x000000007ffdefff] [ 0.000000] Normal empty [ 0.000000] Movable zone start for each node [ 0.000000] Early memory node ranges [ 0.000000] node 0: [mem 0x0000000000001000-0x000000000009efff] [ 0.000000] node 0: [mem 0x0000000000100000-0x000000007ffdefff] [ 0.000000] Initmem setup node 0 [mem 0x0000000000001000-0x000000007ffdefff] [ 0.000000] ACPI: PM-Timer IO Port: 0x608 [ 0.000000] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1]) [ 0.000000] IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23 [ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl) [ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level) [ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level) [ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level) [ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level) [ 0.000000] Using ACPI (MADT) for SMP configuration information [ 0.000000] ACPI: HPET id: 0x8086a201 base: 0xfed00000 [ 0.000000] smpboot: Allowing 16 CPUs, 0 hotplug CPUs [ 0.000000] PM: Registered nosave memory: [mem 0x00000000-0x00000fff] [ 0.000000] PM: Registered nosave memory: [mem 0x0009f000-0x0009ffff] [ 0.000000] PM: Registered nosave memory: [mem 0x000a0000-0x000effff] [ 0.000000] PM: Registered nosave memory: [mem 0x000f0000-0x000fffff] [ 0.000000] e820: [mem 0x80000000-0xfeffbfff] available for PCI devices [ 0.000000] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 1910969940391419 ns [ 0.000000] setup_percpu: NR_CPUS:16 nr_cpumask_bits:16 nr_cpu_ids:16 nr_node_ids:1 [ 0.000000] PERCPU: Embedded 32 pages/cpu @ffff88007fa00000 s92008 r8192 d30872 u131072 [ 0.000000] Built 1 zonelists in Node order, mobility grouping on. Total pages: 515944 [ 0.000000] Policy zone: DMA32 [ 0.000000] Kernel command line: selinux=0 console=ttyS0 rcutorture.onoff_interval=1 rcutorture.onff_holdoff=30 [ 0.000000] PID hash table entries: 4096 (order: 3, 32768 bytes) [ 0.000000] Memory: 2040780K/2096628K available (8931K kernel code, 1258K rwdata, 3700K rodata, 1092K init, 984K bss, 55848K reserved, 0K cma-reserved) [ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=16, Nodes=1 [ 0.000000] Preemptible hierarchical RCU implementation. [ 0.000000] RCU debugfs-based tracing is enabled. [ 0.000000] CONFIG_RCU_FANOUT set to non-default value of 2 [ 0.000000] RCU torture testing starts during boot. [ 0.000000] Four(or more)-level hierarchy is enabled. [ 0.000000] Build-time adjustment of leaf fanout to 2. [ 0.000000] RCU kthread priority: 2. [ 0.000000] NR_IRQS:4352 nr_irqs:552 16 [ 0.000000] Console: colour *CGA 80x25 [ 0.000000] console [ttyS0] enabled [ 0.000000] clocksource: hpet: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604467 ns [ 0.000000] tsc: Fast TSC calibration using PIT [ 0.000000] tsc: Detected 3466.832 MHz processor [ 0.003013] Calibrating delay loop (skipped), value calculated using timer frequency.. 6933.66 BogoMIPS (lpj=3466832) [ 0.003833] pid_max: default: 32768 minimum: 301 [ 0.004006] ACPI: Core revision 20160108 [ 0.005469] ACPI: 2 ACPI AML tables successfully acquired and loaded [ 0.005978] [ 0.006019] Security Framework initialized [ 0.006345] SELinux: Disabled at boot. [ 0.006740] Dentry cache hash table entries: 262144 (order: 9, 2097152 bytes) [ 0.007361] Inode-cache hash table entries: 131072 (order: 8, 1048576 bytes) [ 0.008155] Mount-cache hash table entries: 4096 (order: 3, 32768 bytes) [ 0.008679] Mountpoint-cache hash table entries: 4096 (order: 3, 32768 bytes) [ 0.009966] mce: CPU supports 10 MCE banks [ 0.010033] Last level iTLB entries: 4KB 0, 2MB 0, 4MB 0 [ 0.010446] Last level dTLB entries: 4KB 0, 2MB 0, 4MB 0, 1GB 0 [ 0.012422] Freeing SMP alternatives memory: 32K (ffffffff8204d000 - ffffffff82055000) [ 0.013352] Switched APIC routing to physical flat. [ 0.014528] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1 [ 0.024122] smpboot: CPU0: Intel(R) Xeon(R) CPU X5690 @ 3.47GHz (family: 0x6, model: 0x2c, stepping: 0x2) [ 0.025000] Performance Events: 16-deep LBR, Westmere events, Intel PMU driver. [ 0.025496] perf_event_intel: CPUID marked event: 'bus cycles' unavailable [ 0.026006] ... version: 2 [ 0.026368] ... bit width: 48 [ 0.026737] ... generic registers: 4 [ 0.027003] ... value mask: 0000ffffffffffff [ 0.027478] ... max period: 000000007fffffff [ 0.027953] ... fixed-purpose events: 3 [ 0.028003] ... event mask: 000000070000000f [ 0.037037] x86: Booting SMP configuration: [ 0.037492] .... node #0, CPUs: #1 #2 #3 #4 #5 #6 #7 #8 #9 #10 #11 #12 #13 #14 #15 [ 0.995027] x86: Booted up 1 node, 16 CPUs [ 0.995371] smpboot: Total of 16 processors activated (111391.08 BogoMIPS) [ 0.997856] devtmpfs: initialized [ 0.998418] kworker/u32:0 (98) used greatest stack depth: 13928 bytes left [ 0.998561] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 1911260446275000 ns [ 0.998925] RTC time: 12:20:59, date: 03/30/16 [ 0.999018] NET: Registered protocol family 16 [ 1.005018] cpuidle: using governor menu [ 1.005421] ACPI: bus type PCI registered [ 1.005818] PCI: Using configuration type 1 for base access [ 1.005747] kworker/u32:3 (115) used greatest stack depth: 13920 bytes left [ 1.021340] HugeTLB registered 2 MB page size, pre-allocated 0 pages [ 1.022603] ACPI: Added _OSI(Module Device) [ 1.022952] ACPI: Added _OSI(Processor Device) [ 1.023005] ACPI: Added _OSI(3.0 _SCP Extensions) [ 1.023355] ACPI: Added _OSI(Processor Aggregator Device) [ 1.025022] ACPI: Interpreter enabled [ 1.025320] ACPI: (supports S0 S3 S4 S5) [ 1.025667] ACPI: Using IOAPIC for interrupt routing [ 1.026046] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug [ 1.032012] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff]) [ 1.032602] acpi PNP0A03:00: _OSC: OS supports [ASPM ClockPM Segments MSI] [ 1.033009] acpi PNP0A03:00: _OSC failed (AE_NOT_FOUND); disabling ASPM [ 1.033650] acpi PNP0A03:00: fail to add MMCONFIG information, can't access extended PCI configuration space under this bridge. [ 1.034072] PCI host bridge to bus 0000:00 [ 1.034468] pci_bus 0000:00: root bus resource [io 0x0000-0x0cf7 window] [ 1.034968] pci_bus 0000:00: root bus resource [io 0x0d00-0xffff window] [ 1.035004] pci_bus 0000:00: root bus resource [mem 0x000a0000-0x000bffff window] [ 1.035585] pci_bus 0000:00: root bus resource [mem 0x80000000-0xfebfffff window] [ 1.036017] pci_bus 0000:00: root bus resource [bus 00-ff] [ 1.039433] pci 0000:00:01.1: legacy IDE quirk: reg 0x10: [io 0x01f0-0x01f7] [ 1.039968] pci 0000:00:01.1: legacy IDE quirk: reg 0x14: [io 0x03f6] [ 1.040005] pci 0000:00:01.1: legacy IDE quirk: reg 0x18: [io 0x0170-0x0177] [ 1.040517] pci 0000:00:01.1: legacy IDE quirk: reg 0x1c: [io 0x0376] [ 1.041368] pci 0000:00:01.3: quirk: [io 0x0600-0x063f] claimed by PIIX4 ACPI [ 1.041916] pci 0000:00:01.3: quirk: [io 0x0700-0x070f] claimed by PIIX4 SMB [ 1.042815] ACPI: PCI Interrupt Link [LNKA] (IRQs 5 *10 11) [ 1.043205] ACPI: PCI Interrupt Link [LNKB] (IRQs 5 *10 11) [ 1.043758] ACPI: PCI Interrupt Link [LNKC] (IRQs 5 10 *11) [ 1.044198] ACPI: PCI Interrupt Link [LNKD] (IRQs 5 10 *11) [ 1.044713] ACPI: PCI Interrupt Link [LNKS] (IRQs *9) [ 1.046143] ACPI: Enabled 16 GPEs in block 00 to 0F [ 1.046807] vgaarb: loaded [ 1.047110] SCSI subsystem initialized [ 1.047744] ACPI: bus type USB registered [ 1.048059] usbcore: registered new interface driver usbfs [ 1.048522] usbcore: registered new interface driver hub [ 1.049121] usbcore: registered new device driver usb [ 1.049610] pps_core: LinuxPPS API ver. 1 registered [ 1.049993] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti [ 1.050037] PTP clock support registered [ 1.050709] Advanced Linux Sound Architecture Driver Initialized. [ 1.051063] PCI: Using ACPI for IRQ routing [ 1.051868] NetLabel: Initializing [ 1.052004] NetLabel: domain hash size = 128 [ 1.052344] NetLabel: protocols = UNLABELED CIPSOv4 [ 1.052731] NetLabel: unlabeled traffic allowed by default [ 1.053340] hpet0: at MMIO 0xfed00000, IRQs 2, 8, 0 [ 1.053767] hpet0: 3 comparators, 64-bit 100.000000 MHz counter [ 1.060502] clocksource: Switched to clocksource hpet [ 1.067708] VFS: Disk quotas dquot_6.6.0 [ 1.068138] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes) [ 1.068861] pnp: PnP ACPI init [ 1.069996] pnp: PnP ACPI: found 5 devices [ 1.083114] clocksource: acpi_pm: mask: 0xffffff max_cycles: 0xffffff, max_idle_ns: 2085701024 ns [ 1.084330] NET: Registered protocol family 2 [ 1.084798] TCP established hash table entries: 16384 (order: 5, 131072 bytes) [ 1.085547] TCP bind hash table entries: 16384 (order: 7, 524288 bytes) [ 1.086253] TCP: Hash tables configured (established 16384 bind 16384) [ 1.086773] UDP hash table entries: 1024 (order: 4, 98304 bytes) [ 1.087369] UDP-Lite hash table entries: 1024 (order: 4, 98304 bytes) [ 1.087919] NET: Registered protocol family 1 [ 1.088579] RPC: Registered named UNIX socket transport module. [ 1.089121] RPC: Registered udp transport module. [ 1.089484] RPC: Registered tcp transport module. [ 1.089831] RPC: Registered tcp NFSv4.1 backchannel transport module. [ 1.090460] pci 0000:00:00.0: Limiting direct PCI/PCI transfers [ 1.090902] pci 0000:00:01.0: PIIX3: Enabling Passive Release [ 1.091511] pci 0000:00:01.0: Activating ISA DMA hang workarounds [ 1.092093] Unpacking initramfs... [ 1.134394] Freeing initrd memory: 3056K (ffff88007fcd4000 - ffff88007ffd0000) [ 1.137993] Scanning for low memory corruption every 60 seconds [ 1.138767] rcu-torture:--- Start of test: nreaders=15 nfakewriters=4 stat_interval=60 verbose=1 test_no_idle_hz=1 shuffle_interval=3 stutter=5 irqreader=1 fqs_duration=0 fqs_holdoff=0 fqs_stutter=3 test_boost=1/0 test_boost_interval=7 test_boost_duration=4 shutdown_secs=0 stall_cpu=0 stall_cpu_holdoff=10 n_barrier_cbs=0 onoff_interval=1 onoff_holdoff=0 [ 1.141407] rcu-torture: Creating rcu_torture_writer task [ 1.141864] rcu-torture: Creating rcu_torture_fakewriter task [ 1.141869] rcu-torture: rcu_torture_writer task started [ 1.141870] rcu-torture: Grace periods expedited from boot/sysfs for rcu, [ 1.141870] rcu-torture: Testing of dynamic grace-period expediting diabled. [ 1.143988] rcu-torture: Creating rcu_torture_fakewriter task [ 1.143990] rcu-torture: rcu_torture_fakewriter task started [ 1.144986] rcu-torture: Creating rcu_torture_fakewriter task [ 1.144990] rcu-torture: rcu_torture_fakewriter task started [ 1.146065] rcu-torture: Creating rcu_torture_fakewriter task [ 1.146120] rcu-torture: rcu_torture_fakewriter task started [ 1.147143] rcu-torture: rcu_torture_fakewriter task started [ 1.147141] rcu-torture: Creating rcu_torture_reader task [ 1.147233] rcu-torture: Creating rcu_torture_reader task [ 1.147235] rcu-torture: rcu_torture_reader task started [ 1.147314] rcu-torture: Creating rcu_torture_reader task [ 1.147317] rcu-torture: rcu_torture_reader task started [ 1.147357] rcu-torture: Creating rcu_torture_reader task [ 1.147363] rcu-torture: rcu_torture_reader task started [ 1.147403] rcu-torture: Creating rcu_torture_reader task [ 1.147406] rcu-torture: rcu_torture_reader task started [ 1.147479] rcu-torture: Creating rcu_torture_reader task [ 1.147483] rcu-torture: rcu_torture_reader task started [ 1.147543] rcu-torture: Creating rcu_torture_reader task [ 1.147549] rcu-torture: rcu_torture_reader task started [ 1.147607] rcu-torture: Creating rcu_torture_reader task [ 1.147611] rcu-torture: rcu_torture_reader task started [ 1.147669] rcu-torture: Creating rcu_torture_reader task [ 1.147679] rcu-torture: rcu_torture_reader task started [ 1.147729] rcu-torture: Creating rcu_torture_reader task [ 1.147740] rcu-torture: rcu_torture_reader task started [ 1.149119] rcu-torture: Creating rcu_torture_reader task [ 1.149123] rcu-torture: rcu_torture_reader task started [ 1.149990] rcu-torture: Creating rcu_torture_reader task [ 1.150107] rcu-torture: rcu_torture_reader task started [ 1.150142] rcu-torture: Creating rcu_torture_reader task [ 1.150147] rcu-torture: rcu_torture_reader task started [ 1.150208] rcu-torture: Creating rcu_torture_reader task [ 1.150212] rcu-torture: rcu_torture_reader task started [ 1.151160] rcu-torture: Creating rcu_torture_reader task [ 1.151221] rcu-torture: Creating rcu_torture_stats task [ 1.151253] rcu-torture: rcu_torture_reader task started [ 1.151277] rcu-torture: Creating torture_shuffle task [ 1.151284] rcu-torture: rcu_torture_stats task started [ 1.152080] rcu-torture: Creating torture_stutter task [ 1.152111] rcu-torture: torture_shuffle task started [ 1.152112] rcu-torture: rcu_torture_reader task started [ 1.154114] rcu-torture: Creating torture_onoff task [ 1.154118] rcu-torture: torture_stutter task started [ 1.211086] rcu-torture: Creating rcu_torture_cbflood task [ 1.211090] rcu-torture: torture_onoff task started [ 1.211092] rcu-torture:torture_onoff task: offlining 13 [ 1.213955] rcu-torture: Creating rcu_torture_cbflood task [ 1.214122] rcu-torture: rcu_torture_cbflood task started [ 1.218078] rcu-torture: Creating rcu_torture_cbflood task [ 1.218734] rcu-torture: Creating rcu_torture_cbflood task [ 1.219118] rcu-torture: rcu_torture_cbflood task started [ 1.223173] rcu-torture: rcu_torture_cbflood task started [ 1.223205] rcu-torture: rcu_torture_cbflood task started [ 1.243284] rcu-torture:torture_onoff task: offlined 13 [ 1.243675] futex hash table entries: 4096 (order: 6, 262144 bytes) [ 1.243736] audit: initializing netlink subsys (disabled) [ 1.243747] audit: type=2000 audit(1459340459.243:1): initialized [ 1.313263] NFS: Registering the id_resolver key type [ 1.313829] Key type id_resolver registered [ 1.314376] Key type id_legacy registered [ 1.354157] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 251) [ 1.354945] io scheduler noop registered [ 1.356446] io scheduler deadline registered [ 1.356923] io scheduler cfq registered (default) [ 1.357612] pci_hotplug: PCI Hot Plug PCI Core version: 0.5 [ 1.359433] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input0 [ 1.361337] ACPI: Power Button [PWRF] [ 1.362621] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled [ 1.399062] 00:04: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A [ 1.400539] Non-volatile memory driver v1.3 [ 1.401156] Linux agpgart interface v0.103 [ 1.401710] [drm] Initialized drm 1.1.0 20060810 [ 1.429307] loop: module loaded [ 1.434097] scsi host0: ata_piix [ 1.435777] scsi host1: ata_piix [ 1.436290] ata1: PATA max MWDMA2 cmd 0x1f0 ctl 0x3f6 bmdma 0xc000 irq 14 [ 1.438073] ata2: PATA max MWDMA2 cmd 0x170 ctl 0x376 bmdma 0xc008 irq 15 [ 1.438894] e100: Intel(R) PRO/100 Network Driver, 3.5.24-k2-NAPI [ 1.439675] e100: Copyright(c) 1999-2006 Intel Corporation [ 1.440407] e1000: Intel(R) PRO/1000 Network Driver - version 7.3.21-k8-NAPI [ 1.442252] e1000: Copyright (c) 1999-2006 Intel Corporation. [ 1.442889] sky2: driver version 1.30 [ 1.443530] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver [ 1.444322] ehci-pci: EHCI PCI platform driver [ 1.444823] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver [ 1.445569] ohci-pci: OHCI PCI platform driver [ 1.449090] uhci_hcd: USB Universal Host Controller Interface driver [ 1.449826] usbcore: registered new interface driver usblp [ 1.451533] usbcore: registered new interface driver usb-storage [ 1.452336] i8042: PNP: PS/2 Controller [PNP0303:KBD,PNP0f13:MOU] at 0x60,0x64 irq 1,12 [ 1.455238] serio: i8042 KBD port at 0x60,0x64 irq 1 [ 1.457074] serio: i8042 AUX port at 0x60,0x64 irq 12 [ 1.457752] mousedev: PS/2 mouse device common for all mice [ 1.458778] input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input1 [ 1.461184] rtc_cmos 00:00: RTC can wake from S4 [ 1.463104] rtc_cmos 00:00: rtc core: registered rtc_cmos as rtc0 [ 1.465953] rtc_cmos 00:00: alarms up to one day, 114 bytes nvram, hpet irqs [ 1.468306] device-mapper: ioctl: 4.34.0-ioctl (2015-10-28) initialised: dm-devel@redhat.com [ 1.469385] hidraw: raw HID events driver (C) Jiri Kosina [ 1.470275] usbcore: registered new interface driver usbhid [ 1.470884] usbhid: USB HID core driver [ 1.471898] Netfilter messages via NETLINK v0.30. [ 1.472530] nf_conntrack version 0.5.0 (16384 buckets, 65536 max) [ 1.474410] ctnetlink v0.93: registering with nfnetlink. [ 1.550099] ip_tables: (C) 2000-2006 Netfilter Core Team [ 1.562112] Initializing XFRM netlink socket [ 1.562766] NET: Registered protocol family 10 [ 1.566194] ip6_tables: (C) 2000-2006 Netfilter Core Team [ 1.651113] sit: IPv6 over IPv4 tunneling driver [ 1.651774] NET: Registered protocol family 17 [ 1.652402] Key type dns_resolver registered [ 1.656232] microcode: CPU0 sig=0x206c2, pf=0x1, revision=0x1 [ 1.656892] microcode: CPU1 sig=0x206c2, pf=0x1, revision=0x1 [ 1.657595] microcode: CPU2 sig=0x206c2, pf=0x1, revision=0x1 [ 1.658311] microcode: CPU3 sig=0x206c2, pf=0x1, revision=0x1 [ 1.659050] microcode: CPU4 sig=0x206c2, pf=0x1, revision=0x1 [ 1.659713] microcode: CPU5 sig=0x206c2, pf=0x1, revision=0x1 [ 1.664080] microcode: CPU6 sig=0x206c2, pf=0x1, revision=0x1 [ 1.664717] microcode: CPU7 sig=0x206c2, pf=0x1, revision=0x1 [ 1.666372] microcode: CPU8 sig=0x206c2, pf=0x1, revision=0x1 [ 1.667095] microcode: CPU9 sig=0x206c2, pf=0x1, revision=0x1 [ 1.667730] microcode: CPU10 sig=0x206c2, pf=0x1, revision=0x1 [ 1.668984] microcode: CPU11 sig=0x206c2, pf=0x1, revision=0x1 [ 1.671078] microcode: CPU12 sig=0x206c2, pf=0x1, revision=0x1 [ 1.671735] microcode: CPU14 sig=0x206c2, pf=0x1, revision=0x1 [ 1.675111] microcode: CPU15 sig=0x206c2, pf=0x1, revision=0x1 [ 1.675751] microcode: Microcode Update Driver: v2.01 , Peter Oruba [ 1.677129] registered taskstats version 1 [ 1.678189] Magic number: 8:778:330 [ 1.678610] tty tty51: hash matches [ 1.679080] console [netcon0] enabled [ 1.679486] netconsole: network logging started [ 1.681203] ALSA device list: [ 1.681517] No soundcards found. [ 1.686591] Freeing unused kernel memory: 1092K (ffffffff81f3c000 - ffffffff8204d000) [ 1.688489] Write protecting the kernel read-only data: 14336k [ 1.733287] Freeing unused kernel memory: 1296K (ffff8800018bc000 - ffff880001a00000) [ 1.737138] Freeing unused kernel memory: 396K (ffff880001d9d000 - ffff880001e00000) :: running early hook [udev] Warning: /lib/modules/4.5.0-rc1+/modules.devname not found - ignoring [ 1.827599] random: systemd-tmpfile urandom read with 3 bits of entropy available [ 1.828672] systemd-tmpfile (1173) used greatest stack depth: 13896 bytes left starting version 228 :: running hook [udev] :: Triggering uevents... [ 2.069991] input: ImExPS/2 Generic Explorer Mouse as /devices/platform/i8042/serio1/input/input3 [ 2.135095] tsc: Refined TSC clocksource calibration: 3466.788 MHz [ 2.135783] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x31f8c2dfb06, max_idle_ns: 440795261134 ns [ 2.247097] rcu-torture:torture_onoff task: offlining 2 ERROR: device '' not found. Skipping fsck. ERROR: Unable to find root device ''. You are being dropped to a recovery shell Type 'exit' to try and continue booting [ 2.386672] smpboot: CPU 2 is now offline sh: can't access tty; job control turned off [rootfs /]# [ 2.397205] rcu-torture:torture_onoff task: offlined 2 [ 2.410066] hrtimer: interrupt took 3042970 ns [ 3.146410] clocksource: Switched to clocksource tsc [ 3.399958] rcu-torture:torture_onoff task: onlining 2 [ 3.460067] smpboot: Booting Node 0 Processor 2 APIC 0x2 [ 3.547187] rcu-torture:torture_onoff task: onlined 2 [ 4.546024] rcu-torture:torture_onoff task: offlining 11 [ 4.693029] smpboot: CPU 11 is now offline [ 4.741119] rcu-torture:torture_onoff task: offlined 11 [ 5.749377] rcu-torture:torture_onoff task: offlining 14 [ 5.949978] smpboot: CPU 14 is now offline [ 5.963969] rcu-torture:torture_onoff task: offlined 14 [ 6.964014] rcu-torture:torture_onoff task: offlining 10 [ 7.053009] smpboot: CPU 10 is now offline [ 7.110906] rcu-torture:torture_onoff task: offlined 10 [ 9.111009] rcu-torture:torture_onoff task: offlining 15 [ 9.168815] smpboot: CPU 15 is now offline [ 9.223617] rcu-torture:torture_onoff task: offlined 15 [ 10.224013] rcu-torture:torture_onoff task: offlining 7 [ 10.279743] smpboot: CPU 7 is now offline [ 10.334679] rcu-torture:torture_onoff task: offlined 7 [ 11.353015] rcu-torture:torture_onoff task: offlining 8 [ 11.399709] smpboot: CPU 8 is now offline [ 11.452791] rcu-torture:torture_onoff task: offlined 8 [ 12.453012] rcu-torture:torture_onoff task: offlining 2 [ 12.692639] smpboot: CPU 2 is now offline [ 12.700748] rcu-torture:torture_onoff task: offlined 2 [ 13.701030] rcu-torture:torture_onoff task: offlining 4 [ 13.805923] smpboot: CPU 4 is now offline [ 13.810522] rcu-torture:torture_onoff task: offlined 4 [ 14.812009] rcu-torture:torture_onoff task: onlining 14 [ 14.853417] smpboot: Booting Node 0 Processor 14 APIC 0xe [ 14.978121] rcu-torture:torture_onoff task: onlined 14 [ 15.993226] rcu-torture:torture_onoff task: offlining 1 [ 16.075508] smpboot: CPU 1 is now offline [ 16.079509] rcu-torture:torture_onoff task: offlined 1 [ 17.080012] rcu-torture:torture_onoff task: onlining 11 [ 17.134382] smpboot: Booting Node 0 Processor 11 APIC 0xb [ 17.161137] rcu-torture:torture_onoff task: onlined 11 [ 18.161010] rcu-torture:torture_onoff task: onlining 13 [ 18.215414] smpboot: Booting Node 0 Processor 13 APIC 0xd [ 18.242122] microcode: CPU13 sig=0x206c2, pf=0x1, revision=0x1 [ 18.242769] rcu-torture:torture_onoff task: onlined 13 [ 19.243011] rcu-torture:torture_onoff task: onlining 7 [ 19.297658] smpboot: Booting Node 0 Processor 7 APIC 0x7 [ 19.351182] rcu-torture:torture_onoff task: onlined 7 [ 20.351029] rcu-torture:torture_onoff task: offlining 7 [ 20.408213] smpboot: CPU 7 is now offline [ 20.463500] rcu-torture:torture_onoff task: offlined 7 [ 21.464012] rcu-torture:torture_onoff task: onlining 15 [ 21.490634] smpboot: Booting Node 0 Processor 15 APIC 0xf [ 21.617119] rcu-torture:torture_onoff task: onlined 15 [ 22.617010] rcu-torture:torture_onoff task: offlining 14 [ 22.675687] smpboot: CPU 14 is now offline [ 22.681349] rcu-torture:torture_onoff task: offlined 14 [ 23.681012] rcu-torture:torture_onoff task: onlining 4 [ 23.731637] smpboot: Booting Node 0 Processor 4 APIC 0x4 [ 23.871156] rcu-torture:torture_onoff task: onlined 4 [ 24.871012] rcu-torture:torture_onoff task: onlining 1 [ 24.900714] x86: Booting SMP configuration: [ 24.901186] smpboot: Booting Node 0 Processor 1 APIC 0x1 [ 24.950179] rcu-torture:torture_onoff task: onlined 1 [ 25.950013] rcu-torture:torture_onoff task: offlining 3 [ 26.057786] smpboot: CPU 3 is now offline [ 26.064052] rcu-torture:torture_onoff task: offlined 3 [ 27.064012] rcu-torture:torture_onoff task: offlining 12 [ 27.119717] smpboot: CPU 12 is now offline [ 27.174923] rcu-torture:torture_onoff task: offlined 12 [ 28.175012] rcu-torture:torture_onoff task: offlining 11 [ 28.230573] smpboot: CPU 11 is now offline [ 28.285886] rcu-torture:torture_onoff task: offlined 11 [ 30.286014] rcu-torture:torture_onoff task: onlining 10 [ 30.294771] smpboot: Booting Node 0 Processor 10 APIC 0xa [ 30.321158] rcu-torture:torture_onoff task: onlined 10 [ 31.321012] rcu-torture:torture_onoff task: offlining 10 [ 31.382675] smpboot: CPU 10 is now offline [ 31.388604] rcu-torture:torture_onoff task: offlined 10 [ 32.398957] rcu-torture:torture_onoff task: offlining 15 [ 32.483642] smpboot: CPU 15 is now offline [ 32.503185] rcu-torture:torture_onoff task: offlined 15 [ 33.517435] rcu-torture:torture_onoff task: offlining 9 [ 33.544327] smpboot: CPU 9 is now offline [ 33.643562] rcu-torture:torture_onoff task: offlined 9 [ 34.643009] rcu-torture:torture_onoff task: onlining 8 [ 34.691663] smpboot: Booting Node 0 Processor 8 APIC 0x8 [ 34.940504] rcu-torture:torture_onoff task: onlined 8 [ 35.940017] rcu-torture:torture_onoff task: onlining 12 [ 35.977744] smpboot: Booting Node 0 Processor 12 APIC 0xc [ 36.027219] rcu-torture:torture_onoff task: onlined 12 [ 37.027017] rcu-torture:torture_onoff task: offlining 5 [ 37.086642] smpboot: CPU 5 is now offline [ 37.140600] rcu-torture:torture_onoff task: offlined 5 [ 38.140057] rcu-torture:torture_onoff task: offlining 1 [ 38.195592] smpboot: CPU 1 is now offline [ 38.249549] rcu-torture:torture_onoff task: offlined 1 [ 39.249060] rcu-torture:torture_onoff task: onlining 2 [ 39.303563] smpboot: Booting Node 0 Processor 2 APIC 0x2 [ 39.330313] rcu-torture:torture_onoff task: onlined 2 [ 40.330013] rcu-torture:torture_onoff task: onlining 7 [ 40.384528] smpboot: Booting Node 0 Processor 7 APIC 0x7 [ 40.410295] rcu-torture:torture_onoff task: onlined 7 [ 41.410012] rcu-torture:torture_onoff task: onlining 15 [ 41.445849] smpboot: Booting Node 0 Processor 15 APIC 0xf [ 41.595119] rcu-torture:torture_onoff task: onlined 15 [ 42.595017] rcu-torture:torture_onoff task: onlining 11 [ 42.640687] smpboot: Booting Node 0 Processor 11 APIC 0xb [ 42.897158] rcu-torture:torture_onoff task: onlined 11 [ 43.918123] rcu-torture:torture_onoff task: offlining 11 [ 44.002293] smpboot: CPU 11 is now offline [ 44.030843] rcu-torture:torture_onoff task: offlined 11 [ 45.069287] rcu-torture:torture_onoff task: onlining 14 [ 45.110852] smpboot: Booting Node 0 Processor 14 APIC 0xe [ 45.190158] rcu-torture:torture_onoff task: onlined 14 [ 46.200280] rcu-torture:torture_onoff task: onlining 3 [ 46.254642] smpboot: Booting Node 0 Processor 3 APIC 0x3 [ 46.281296] rcu-torture:torture_onoff task: onlined 3 [ 47.281108] rcu-torture:torture_onoff task: offlining 12 [ 47.354083] smpboot: CPU 12 is now offline [ 47.408502] rcu-torture:torture_onoff task: offlined 12 [ 48.409053] rcu-torture:torture_onoff task: offlining 7 [ 48.468196] smpboot: CPU 7 is now offline [ 48.522054] rcu-torture:torture_onoff task: offlined 7 [ 49.522011] rcu-torture:torture_onoff task: onlining 5 [ 49.576662] smpboot: Booting Node 0 Processor 5 APIC 0x5 [ 49.620233] rcu-torture:torture_onoff task: onlined 5 [ 50.620020] rcu-torture:torture_onoff task: offlining 5 [ 50.675691] smpboot: CPU 5 is now offline [ 50.730810] rcu-torture:torture_onoff task: offlined 5 [ 51.731011] rcu-torture:torture_onoff task: onlining 7 [ 51.755781] smpboot: Booting Node 0 Processor 7 APIC 0x7 [ 51.939999] rcu-torture:torture_onoff task: onlined 7 [ 52.940014] rcu-torture:torture_onoff task: onlining 10 [ 52.977706] smpboot: Booting Node 0 Processor 10 APIC 0xa [ 53.087157] rcu-torture:torture_onoff task: onlined 10 [ 55.087012] rcu-torture:torture_onoff task: offlining 7 [ 55.185286] smpboot: CPU 7 is now offline [ 55.223166] rcu-torture:torture_onoff task: offlined 7 [ 57.223027] rcu-torture:torture_onoff task: onlining 9 [ 57.277812] smpboot: Booting Node 0 Processor 9 APIC 0x9 [ 57.453204] rcu-torture:torture_onoff task: onlined 9 [ 58.453025] rcu-torture:torture_onoff task: offlining 4 [ 58.508771] smpboot: CPU 4 is now offline [ 58.563853] rcu-torture:torture_onoff task: offlined 4 [ 59.564021] rcu-torture:torture_onoff task: offlining 15 [ 59.619737] smpboot: CPU 15 is now offline [ 59.674752] rcu-torture:torture_onoff task: offlined 15 [ 60.675011] rcu-torture:torture_onoff task: onlining 11 [ 60.729655] smpboot: Booting Node 0 Processor 11 APIC 0xb [ 60.760167] rcu-torture:torture_onoff task: onlined 11 [ 61.151063] rcu-torture: rtc: ffffffff820d6d90 ver: 486 tfle: 0 rta: 486 rtaf: 0 rtf: 477 rtmbe: 0 rtbke: 0 rtbre: 0 rtbf: 0 rtb: 0 nt: 190132 onoff: 22/22:28/28 35,302:36,248 3043:3316 (HZ=1000) barrier: 0/0:0 cbflood: 111 [ 61.152622] rcu-torture: Reader Pipe: 1535993020 2788 0 0 0 0 0 0 0 0 0 [ 61.153284] rcu-torture: Reader Batch: 1498299548 37696260 0 0 0 0 0 0 0 0 0 [ 61.153956] rcu-torture: Free-Block Circulation: 485 485 484 483 482 481 480 479 478 477 0 [ 61.761294] rcu-torture:torture_onoff task: onlining 7 [ 61.775714] smpboot: Booting Node 0 Processor 7 APIC 0x7 [ 61.863159] rcu-torture:torture_onoff task: onlined 7 [ 62.863011] rcu-torture:torture_onoff task: onlining 4 [ 62.871773] smpboot: Booting Node 0 Processor 4 APIC 0x4 [ 63.031172] rcu-torture:torture_onoff task: onlined 4 [ 65.031013] rcu-torture:torture_onoff task: onlining 12 [ 65.080798] smpboot: Booting Node 0 Processor 12 APIC 0xc [ 65.275156] rcu-torture:torture_onoff task: onlined 12 [ 66.275024] rcu-torture:torture_onoff task: offlining 8 [ 66.389965] smpboot: CPU 8 is now offline [ 66.446833] rcu-torture:torture_onoff task: offlined 8 [ 67.447011] rcu-torture:torture_onoff task: offlining 4 [ 67.519976] smpboot: CPU 4 is now offline [ 67.574933] rcu-torture:torture_onoff task: offlined 4 [ 68.575012] rcu-torture:torture_onoff task: offlining 14 [ 68.630792] smpboot: CPU 14 is now offline [ 68.685836] rcu-torture:torture_onoff task: offlined 14 [ 69.686010] rcu-torture:torture_onoff task: onlining 8 [ 69.740781] smpboot: Booting Node 0 Processor 8 APIC 0x8 [ 69.767219] rcu-torture:torture_onoff task: onlined 8 [ 70.767012] rcu-torture:torture_onoff task: onlining 1 [ 70.821811] x86: Booting SMP configuration: [ 70.822290] smpboot: Booting Node 0 Processor 1 APIC 0x1 [ 70.849223] rcu-torture:torture_onoff task: onlined 1 [ 71.849011] rcu-torture:torture_onoff task: offlining 8 [ 71.910796] smpboot: CPU 8 is now offline [ 71.932831] rcu-torture:torture_onoff task: offlined 8 [ 72.933011] rcu-torture:torture_onoff task: onlining 14 [ 72.974767] smpboot: Booting Node 0 Processor 14 APIC 0xe [ 73.058172] rcu-torture:torture_onoff task: onlined 14 [ 74.058013] rcu-torture:torture_onoff task: offlining 2 [ 74.109813] smpboot: CPU 2 is now offline [ 74.162576] rcu-torture:torture_onoff task: offlined 2 [ 75.198166] rcu-torture:torture_onoff task: onlining 5 [ 75.213514] smpboot: Booting Node 0 Processor 5 APIC 0x5 [ 75.352163] rcu-torture:torture_onoff task: onlined 5 [ 76.352021] rcu-torture:torture_onoff task: offlining 5 [ 76.407822] smpboot: CPU 5 is now offline [ 76.461629] rcu-torture:torture_onoff task: offlined 5 [ 77.462018] rcu-torture:torture_onoff task: offlining 3 [ 77.532054] smpboot: CPU 3 is now offline [ 77.586834] rcu-torture:torture_onoff task: offlined 3 [ 78.587038] rcu-torture:torture_onoff task: onlining 15 [ 78.660026] smpboot: Booting Node 0 Processor 15 APIC 0xf [ 78.710236] rcu-torture:torture_onoff task: onlined 15 [ 79.710023] rcu-torture:torture_onoff task: onlining 8 [ 79.764771] smpboot: Booting Node 0 Processor 8 APIC 0x8 [ 79.816193] rcu-torture:torture_onoff task: onlined 8 [ 80.817021] rcu-torture:torture_onoff task: offlining 14 [ 80.889959] smpboot: CPU 14 is now offline [ 80.945843] rcu-torture:torture_onoff task: offlined 14 [ 81.946011] rcu-torture:torture_onoff task: offlining 1 [ 81.982648] smpboot: CPU 1 is now offline [ 82.023787] rcu-torture:torture_onoff task: offlined 1 [ 83.024014] rcu-torture:torture_onoff task: onlining 2 [ 83.036513] smpboot: Booting Node 0 Processor 2 APIC 0x2 [ 83.227164] rcu-torture:torture_onoff task: onlined 2 [ 84.227012] rcu-torture:torture_onoff task: onlining 14 [ 84.247776] smpboot: Booting Node 0 Processor 14 APIC 0xe [ 84.339163] rcu-torture:torture_onoff task: onlined 14 [ 85.339012] rcu-torture:torture_onoff task: offlining 8 [ 85.420802] smpboot: CPU 8 is now offline [ 85.442792] rcu-torture:torture_onoff task: offlined 8 [ 86.443011] rcu-torture:torture_onoff task: offlining 13 [ 86.497797] smpboot: CPU 13 is now offline [ 86.498352] BUG: unable to handle kernel NULL pointer dereference at (null) [ 86.499223] IP: [] migrate_timer_list+0x32/0xc0 [ 86.499255] PGD 0 [ 86.499255] Oops: 0002 [#1] PREEMPT SMP [ 86.499255] Modules linked in: [ 86.499255] CPU: 11 PID: 794 Comm: torture_onoff Not tainted 4.5.0-rc1+ #14 [ 86.499255] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 86.499255] task: ffff88007c67a580 ti: ffff88007c63c000 task.ti: ffff88007c63c000 [ 86.499255] RIP: 0010:[] [] migrate_timer_list+0x32/0xc0 [ 86.499255] RSP: 0000:ffff88007c63fc98 EFLAGS: 00010086 [ 86.499255] RAX: dead000000000200 RBX: ffff88007fb6cc00 RCX: ffff88007fbacc00 [ 86.499255] RDX: 0000000000000000 RSI: ffff88007fbad650 RDI: ffff88007fb6cc00 [ 86.499255] RBP: ffff88007c63fcc0 R08: 0000000000000000 R09: ffffffff81e4d360 [ 86.499255] R10: 0000000000000000 R11: 0000000000018f70 R12: ffff88007fbad650 [ 86.499255] R13: ffff88007fb6cc00 R14: 000000000000000b R15: ffff88007fbac420 [ 86.499255] FS: 0000000000000000(0000) GS:ffff88007fb60000(0000) knlGS:0000000000000000 [ 86.509030] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 86.509030] CR2: 0000000000000000 CR3: 0000000001e0f000 CR4: 00000000000006e0 [ 86.509030] Stack: [ 86.509030] ffff88007fb6cc00 ffff88007fbad658 ffff88007fbada50 ffff88007fbad850 [ 86.509030] ffff88007fbad458 ffff88007c63fd08 ffffffff810b95c4 ffff88007fbacc00 [ 86.509030] ffff88007fbad648 00000000fffffff0 ffffffff81e4e0c0 0000000000000007 [ 86.509030] Call Trace: [ 86.509030] [] timer_cpu_notify+0xe4/0x160 [ 86.509030] [] notifier_call_chain+0x45/0x70 [ 86.509030] [] __raw_notifier_call_chain+0x9/0x10 [ 86.509030] [] cpu_notify_nofail+0x1e/0x30 [ 86.509030] [] _cpu_down+0x212/0x350 [ 86.509030] [] ? __call_rcu.constprop.74+0x380/0x380 [ 86.509030] [] ? call_rcu_bh+0x20/0x20 [ 86.509030] [] ? __rcu_read_unlock+0x50/0x50 [ 86.509030] [] ? __rcu_read_unlock+0x50/0x50 [ 86.509030] [] cpu_down+0x2f/0x50 [ 86.509030] [] torture_onoff+0x115/0x380 [ 86.509030] [] ? torture_kthread_stopping+0x70/0x70 [ 86.509030] [] kthread+0xd6/0xf0 [ 86.509030] [] ? kthread_worker_fn+0x180/0x180 [ 86.509030] [] ret_from_fork+0x3f/0x70 [ 86.509030] [] ? kthread_worker_fn+0x180/0x180 [ 86.509030] Code: 56 41 55 41 54 53 48 8b 06 44 8b 77 40 48 85 c0 74 53 49 89 fd 49 89 f4 4d 8b 3c 24 66 66 66 66 90 49 8b 07 49 8b 57 08 48 85 c0 <48> 89 02 74 04 48 89 50 08 48 b8 00 02 00 00 00 00 ad de 4c 89 [ 86.509030] RIP [] migrate_timer_list+0x32/0xc0 [ 86.509030] RSP [ 86.509030] CR2: 0000000000000000 [ 86.509030] ---[ end trace 68c18a1de6af7dbc ]--- [ 86.509030] note: torture_onoff[794] exited with preempt_count 3 [ 86.530564] BUG: spinlock lockup suspected on CPU#11, torture_onoff/794 [ 86.530564] lock: 0xffff88007fb6cc00, .magic: dead4ead, .owner: torture_onoff/794, .owner_cpu: 11 [ 86.530564] CPU: 11 PID: 794 Comm: torture_onoff Tainted: G D 4.5.0-rc1+ #14 [ 86.530564] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 86.530564] ffff88007fb6cc00 ffff88007fb63e50 ffffffff8132cd6c ffff88007c67a580 [ 86.530564] ffff88007fb63e70 ffffffff81092fb3 ffff88007fb6cc00 00000000cfbb42a0 [ 86.530564] ffff88007fb63ea0 ffffffff810930db ffff88007fb6cc00 ffffffff81e080c8 [ 86.530564] Call Trace: [ 86.530564] [] dump_stack+0x4e/0x82 [ 86.530564] [] spin_dump+0x73/0xc0 [ 86.530564] [] do_raw_spin_lock+0x9b/0x150 [ 86.530564] [] _raw_spin_lock_irq+0x1b/0x20 [ 86.530564] [] run_timer_softirq+0x40/0x2b0 [ 86.530564] [] ? clockevents_program_event+0x7d/0x120 [ 86.530564] [] __do_softirq+0xd3/0x280 [ 86.530564] [] irq_exit+0x42/0x50 [ 86.530564] [] smp_apic_timer_interrupt+0x3d/0x50 [ 86.530564] [] apic_timer_interrupt+0x7f/0x90 [ 86.530564] [] ? _raw_spin_unlock_irq+0xf/0x30 [ 86.530564] [] ? _raw_spin_unlock_irq+0x9/0x30 [ 86.530564] [] acct_collect+0x166/0x1a0 [ 86.530564] [] do_exit+0x4f9/0xc00 [ 86.530564] [] oops_end+0x84/0xb0 [ 86.530564] [] no_context+0x102/0x330 [ 86.530564] [] __bad_area_nosemaphore+0x75/0x1f0 [ 86.530564] [] bad_area_nosemaphore+0xe/0x10 [ 86.530564] [] __do_page_fault+0x85/0x450 [ 86.530564] [] do_page_fault+0xc/0x10 [ 86.530564] [] page_fault+0x22/0x30 [ 86.530564] [] ? migrate_timer_list+0x32/0xc0 [ 86.530564] [] timer_cpu_notify+0xe4/0x160 [ 86.530564] [] notifier_call_chain+0x45/0x70 [ 86.530564] [] __raw_notifier_call_chain+0x9/0x10 [ 86.530564] [] cpu_notify_nofail+0x1e/0x30 [ 86.530564] [] _cpu_down+0x212/0x350 [ 86.530564] [] ? __call_rcu.constprop.74+0x380/0x380 [ 86.530564] [] ? call_rcu_bh+0x20/0x20 [ 86.530564] [] ? __rcu_read_unlock+0x50/0x50 [ 86.530564] [] ? __rcu_read_unlock+0x50/0x50 [ 86.530564] [] cpu_down+0x2f/0x50 [ 86.530564] [] torture_onoff+0x115/0x380 [ 86.530564] [] ? torture_kthread_stopping+0x70/0x70 [ 86.530564] [] kthread+0xd6/0xf0 [ 86.530564] [] ? kthread_worker_fn+0x180/0x180 [ 86.530564] [] ret_from_fork+0x3f/0x70 [ 86.530564] [] ? kthread_worker_fn+0x180/0x180 [ 86.530564] Sending NMI to all CPUs: [ 86.530564] NMI backtrace for cpu 0 [ 86.530564] CPU: 0 PID: 777 Comm: rcu_torture_rea Tainted: G D 4.5.0-rc1+ #14 [ 86.530564] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 86.530564] task: ffff88007c66be80 ti: ffff88007c660000 task.ti: ffff88007c660000 [ 86.530564] RIP: 0010:[] [] delay_tsc+0x25/0xc0 [ 86.530564] RSP: 0018:ffff88007c663d00 EFLAGS: 00000002 [ 86.530564] RAX: 00000000f5d32a52 RBX: ffff88007fbacc00 RCX: 0000000000000002 [ 86.530564] RDX: 00000000000000b0 RSI: ffffffff81ca0d44 RDI: ffffffff81cbdfe7 [ 86.530564] RBP: ffff88007c663d20 R08: ffff88007c660000 R09: ffff88007fbacc00 [ 86.530564] R10: ffff88007c663e30 R11: 0000000000000001 R12: 00000000aaeed6e6 [ 86.530564] R13: 0000000000000001 R14: 0000000000000000 R15: ffff88007c663dd0 [ 86.530564] FS: 0000000000000000(0000) GS:ffff88007fa00000(0000) knlGS:0000000000000000 [ 86.530564] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 86.530564] CR2: 000055f32cd75020 CR3: 0000000001e0f000 CR4: 00000000000006f0 [ 86.530564] Stack: [ 86.530564] ffff88007fbacc00 00000000aaeed6e6 0000000000000001 00000000cfbb42a0 [ 86.530564] ffff88007c663d30 ffffffff8133930a ffff88007c663d60 ffffffff810930c7 [ 86.530564] 0000000000000286 ffff88007fbacc00 ffff88007fbacc00 000000000000cc00 [ 86.530564] Call Trace: [ 86.530564] [] __delay+0xa/0x10 [ 86.530564] [] do_raw_spin_lock+0x87/0x150 [ 86.530564] [] _raw_spin_lock_irqsave+0x1f/0x30 [ 86.530564] [] lock_timer_base.isra.23+0x4f/0x70 [ 86.530564] [] mod_timer+0x6a/0x200 [ 86.530564] [] ? preempt_schedule+0x30/0x30 [ 86.530564] [] rcu_torture_reader+0x2a7/0x2e0 [ 86.530564] [] ? rcu_torture_reader+0x2e0/0x2e0 [ 86.530564] [] ? rcutorture_trace_dump.part.7+0x20/0x20 [ 86.530564] [] kthread+0xd6/0xf0 [ 86.530564] [] ? kthread_worker_fn+0x180/0x180 [ 86.530564] [] ret_from_fork+0x3f/0x70 [ 86.530564] [] ? kthread_worker_fn+0x180/0x180 [ 86.530564] Code: 5e 41 5f 5d c3 90 55 48 89 e5 41 56 41 55 41 54 53 49 89 fd bf 01 00 00 00 e8 68 ec d3 ff e8 73 ec 00 00 41 89 c6 0f ae e8 0f 31 <48> c1 e2 20 48 09 c2 49 89 d4 eb 16 f3 90 bf 01 00 00 00 e8 43 [ 86.530564] NMI backtrace for cpu 2 [ 86.530564] CPU: 2 PID: 787 Comm: rcu_torture_rea Tainted: G D 4.5.0-rc1+ #14 [ 86.530564] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 86.530564] task: ffff88007cb24b00 ti: ffff88007c680000 task.ti: ffff88007c680000 [ 86.530564] RIP: 0010:[] [] delay_tsc+0x33/0xc0 [ 86.530564] RSP: 0018:ffff88007c683db0 EFLAGS: 00000286 [ 86.530564] RAX: 0000000080000000 RBX: 000000b0f5d35a78 RCX: 0000000000000001 [ 86.530564] RDX: 0000000080000001 RSI: ffffffff81ca0d44 RDI: 00000000ffffffff [ 86.530564] RBP: ffff88007c683dd0 R08: ffff88007c680000 R09: 0000000000000002 [ 86.530564] R10: 0000000000000000 R11: 0000000000000001 R12: 000000b0f5a85ab0 [ 86.530564] R13: 0000000000351e94 R14: 0000000000000002 R15: ffffffff820d5fe0 [ 86.530564] FS: 0000000000000000(0000) GS:ffff88007fa40000(0000) knlGS:0000000000000000 [ 86.530564] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 86.530564] CR2: 0000000000000000 CR3: 0000000001e0f000 CR4: 00000000000006e0 [ 86.530564] Stack: [ 86.530564] 0000000000000008 ffff88007c683e20 00000032bf972035 000000000000046f [ 86.530564] ffff88007c683de0 ffffffff81339337 ffff88007c683e00 ffffffff810add86 [ 86.530564] 0000000000000000 0000000000000000 ffff88007c683ea8 ffffffff810ad458 [ 86.530564] Call Trace: [ 86.530564] [] __const_udelay+0x27/0x30 [ 86.530564] [] rcu_read_delay+0x36/0xb0 [ 86.530564] [] rcu_torture_reader+0x1a8/0x2e0 [ 86.530564] [] ? rcu_torture_reader+0x2e0/0x2e0 [ 86.530564] [] ? rcutorture_trace_dump.part.7+0x20/0x20 [ 86.530564] [] kthread+0xd6/0xf0 [ 86.530564] [] ? kthread_worker_fn+0x180/0x180 [ 86.530564] [] ret_from_fork+0x3f/0x70 [ 86.530564] [] ? kthread_worker_fn+0x180/0x180 [ 86.530564] Code: 41 54 53 49 89 fd bf 01 00 00 00 e8 68 ec d3 ff e8 73 ec 00 00 41 89 c6 0f ae e8 0f 31 48 c1 e2 20 48 09 c2 49 89 d4 eb 16 f3 90 01 00 00 00 e8 43 ec d3 ff e8 4e ec 00 00 44 39 f0 75 36 0f [ 86.530564] NMI backtrace for cpu 6 [ 86.530564] CPU: 6 PID: 784 Comm: rcu_torture_rea Tainted: G D 4.5.0-rc1+ #14 [ 86.530564] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 86.530564] task: ffff88007cb22580 ti: ffff88007c624000 task.ti: ffff88007c624000 [ 86.530564] RIP: 0010:[] [] rcu_torture_reader+0x1b2/0x2e0 [ 86.530564] RSP: 0018:ffff88007c627e10 EFLAGS: 00000246 [ 86.530564] RAX: ffff88007cb22580 RBX: 0000000000000000 RCX: 00000000000493e0 [ 86.530564] RDX: 0000000000000000 RSI: ffff88007fad27d8 RDI: ffffffff810732f6 [ 86.530564] RBP: ffff88007c627ea8 R08: ffff88007c624000 R09: ffff88007fad53f0 [ 86.530564] R10: ffff88007c627e30 R11: 000000000000005a R12: 0000000000000000 [ 86.530564] R13: 00000032c47cf773 R14: 000000000000046f R15: ffffffff820d5fe0 [ 86.530564] FS: 0000000000000000(0000) GS:ffff88007fac0000(0000) knlGS:0000000000000000 [ 86.530564] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 86.530564] CR2: 000055f32cd5f720 CR3: 0000000001e0f000 CR4: 00000000000006e0 [ 86.530564] Stack: [ 86.530564] 0000000000000000 0000000081a0a240 41b2bee7f92fd497 0000000000001179 [ 86.530564] ffff88007cc53d40 ffff88007c50bdf0 00000000fffcd063 ffffffff810ad590 [ 86.530564] 0000000000000000 ffffffff00000006 00000000ffffffff 0000000000000000 [ 86.530564] Call Trace: [ 86.530564] [] ? rcu_torture_reader+0x2e0/0x2e0 [ 86.530564] [] ? rcutorture_trace_dump.part.7+0x20/0x20 [ 86.530564] [] kthread+0xd6/0xf0 [ 86.530564] [] ? kthread_worker_fn+0x180/0x180 [ 86.530564] [] ret_from_fork+0x3f/0x70 [ 86.530564] [] ? kthread_worker_fn+0x180/0x180 [ 86.530564] Code: 00 00 00 41 8b 4f 28 85 c9 75 07 f0 ff 05 13 8a 02 01 48 8b 05 80 89 02 01 48 8d 7c 24 10 ff 50 20 bf 01 00 00 00 e8 4e ac fc ff <4d> 63 67 10 48 8b 05 63 89 02 01 41 83 fc 0a 0f 8e ca fe ff ff [ 86.530564] NMI backtrace for cpu 7 [ 86.530564] CPU: 7 PID: 788 Comm: rcu_torture_rea Tainted: G D 4.5.0-rc1+ #14 [ 86.530564] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 86.530564] task: ffff88007cb25780 ti: ffff88007c684000 task.ti: ffff88007c684000 [ 86.530564] RIP: 0010:[] [] in_lock_functions+0x0/0x20 [ 86.530564] RSP: 0018:ffff88007c687df0 EFLAGS: 00000246 [ 86.530564] RAX: ffff88007c687ea8 RBX: ffffffff810732f6 RCX: 00000000000493e0 [ 86.530564] RDX: 0000000000000000 RSI: ffff88007faf27d8 RDI: ffffffff810732f6 [ 86.530564] RBP: ffff88007c687e00 R08: ffff88007c684000 R09: ffff88007faf53f0 [ 86.530564] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 [ 86.530564] R13: 00000032c47d0479 R14: 000000000000046f R15: ffffffff820d5fe0 [ 86.530564] FS: 0000000000000000(0000) GS:ffff88007fae0000(0000) knlGS:0000000000000000 [ 86.530564] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 86.530564] CR2: 000055f32cd5f720 CR3: 0000000001e0f000 CR4: 00000000000006e0 [ 86.530564] Stack: [ 86.530564] ffffffff81078130 0000000000000000 ffff88007c687ea8 ffffffff810ad462 [ 86.530564] 0000000000000000 0000000081a0a240 80b0c9268da6f193 0000000000000081 [ 86.530564] 0000000000000000 ffff88007c623e30 00000000fffcd063 ffffffff810ad590 [ 86.530564] Call Trace: [ 86.530564] [] ? preempt_count_add+0x80/0xc0 [ 86.530564] [] rcu_torture_reader+0x1b2/0x2e0 [ 86.530564] [] ? rcu_torture_reader+0x2e0/0x2e0 [ 86.530564] [] ? rcutorture_trace_dump.part.7+0x20/0x20 [ 86.530564] [] kthread+0xd6/0xf0 [ 86.530564] [] ? kthread_worker_fn+0x180/0x180 [ 86.530564] [] ret_from_fork+0x3f/0x70 [ 86.530564] [] ? kthread_worker_fn+0x180/0x180 [ 86.530564] Code: 81 48 c7 c2 1e 0a c9 81 be 4b 00 00 00 48 c7 c7 18 e1 c9 81 e8 d2 56 fc ff eb 80 55 48 89 7f 38 48 89 e5 5d c3 66 0f 1f 44 00 00 <55> 31 c0 48 81 ff c0 3f 8b 81 48 89 e5 72 0c 31 c0 48 81 ff fa [ 86.530564] NMI backtrace for cpu 9 [ 86.530564] CPU: 9 PID: 780 Comm: rcu_torture_rea Tainted: G D 4.5.0-rc1+ #14 [ 86.530564] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 86.530564] task: ffff88007c66a580 ti: ffff88007c654000 task.ti: ffff88007c654000 [ 86.530564] RIP: 0010:[] [] delay_tsc+0x33/0xc0 [ 86.530564] RSP: 0018:ffff88007c657db0 EFLAGS: 00000286 [ 86.530564] RAX: 0000000080000000 RBX: 000000b0f5d3e3fa RCX: 0000000000000001 [ 86.530564] RDX: 0000000080000001 RSI: ffffffff81ca0d44 RDI: 00000000ffffffff [ 86.530564] RBP: ffff88007c657dd0 R08: ffff88007c654000 R09: ffff88007fb353f0 [ 86.530564] R10: ffff88007c657e30 R11: 0000000000000078 R12: 000000b0f5b422be [ 86.530564] R13: 0000000000351e15 R14: 0000000000000009 R15: ffffffff820d5fe0 [ 86.530564] FS: 0000000000000000(0000) GS:ffff88007fb20000(0000) knlGS:0000000000000000 [ 86.530564] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 86.530564] CR2: 000055f32cd5f720 CR3: 000000007b0a0000 CR4: 00000000000006e0 [ 86.530564] Stack: [ 86.530564] 000000000000001c ffff88007c657e20 00000032c322cb52 000000000000046f [ 86.530564] ffff88007c657de0 ffffffff81339337 ffff88007c657e00 ffffffff810add86 [ 86.530564] 0000000000000000 0000000000000000 ffff88007c657ea8 ffffffff810ad458 [ 86.530564] Call Trace: [ 86.530564] [] __const_udelay+0x27/0x30 [ 86.530564] [] rcu_read_delay+0x36/0xb0 [ 86.530564] [] rcu_torture_reader+0x1a8/0x2e0 [ 86.530564] [] ? rcu_torture_reader+0x2e0/0x2e0 [ 86.530564] [] ? rcutorture_trace_dump.part.7+0x20/0x20 [ 86.530564] [] kthread+0xd6/0xf0 [ 86.530564] [] ? kthread_worker_fn+0x180/0x180 [ 86.530564] [] ret_from_fork+0x3f/0x70 [ 86.530564] [] ? kthread_worker_fn+0x180/0x180 [ 86.530564] Code: 41 54 53 49 89 fd bf 01 00 00 00 e8 68 ec d3 ff e8 73 ec 00 00 41 89 c6 0f ae e8 0f 31 48 c1 e2 20 48 09 c2 49 89 d4 eb 16 f3 90 01 00 00 00 e8 43 ec d3 ff e8 4e ec 00 00 44 39 f0 75 36 0f [ 86.530564] NMI backtrace for cpu 10 [ 86.530564] CPU: 10 PID: 0 Comm: swapper/10 Tainted: G D 4.5.0-rc1+ #14 [ 86.530564] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 86.530564] task: ffff88007cc98c80 ti: ffff88007cca4000 task.ti: ffff88007cca4000 [ 86.530564] RIP: 0010:[] [] delay_tsc+0x4a/0xc0 [ 86.530564] RSP: 0018:ffff88007fb43d78 EFLAGS: 00000002 [ 86.530564] RAX: 00000000f5d4115e RBX: ffff88007fb6cc00 RCX: 0000000000000104 [ 86.530564] RDX: 000000b0f5d4115e RSI: ffffffff81ca0d44 RDI: ffffffff81cbdfe7 [ 86.530564] RBP: ffff88007fb43d98 R08: 0000000000000000 R09: 000000000000dec5 [ 86.530564] R10: 00000000034dd705 R11: 0000000002f96dbb R12: 000000b0f5d4115e [ 86.530564] R13: 0000000000000001 R14: 000000000000000a R15: 0000000000000000 [ 86.530564] FS: 0000000000000000(0000) GS:ffff88007fb40000(0000) knlGS:0000000000000000 [ 86.530564] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 86.530564] CR2: 000055f32cd5f720 CR3: 0000000001e0f000 CR4: 00000000000006e0 [ 86.530564] Stack: [ 86.530564] ffff88007fb6cc00 00000000b85120e5 0000000000000001 00000000cfbb42a0 [ 86.530564] ffff88007fb43da8 ffffffff8133930a ffff88007fb43dd8 ffffffff810930c7 [ 86.530564] ffff88007fb6cc00 ffffffff820d8c80 ffff88007fb6cc00 0000000000000000 [ 86.530564] Call Trace: [ 86.530564] d [] __delay+0xa/0x10 [ 86.530564] [] do_raw_spin_lock+0x87/0x150 [ 86.530564] [] _raw_spin_lock+0x1a/0x20 [ 86.530564] [] add_timer_on+0x76/0x150 [ 86.530564] [] clocksource_watchdog+0x217/0x2f0 [ 86.530564] [] ? clocksource_unregister+0x50/0x50 [ 86.530564] [] call_timer_fn+0x30/0x120 [ 86.530564] [] ? clocksource_unregister+0x50/0x50 [ 86.530564] [] run_timer_softirq+0x20b/0x2b0 [ 86.530564] [] __do_softirq+0xd3/0x280 [ 86.530564] [] irq_exit+0x42/0x50 [ 86.530564] [] smp_apic_timer_interrupt+0x3d/0x50 [ 86.530564] [] apic_timer_interrupt+0x7f/0x90 [ 86.530564] d [] ? default_idle+0x13/0xd0 [ 86.530564] [] arch_cpu_idle+0xa/0x10 [ 86.530564] [] default_idle_call+0x25/0x30 [ 86.530564] [] cpu_startup_entry+0x287/0x2e0 [ 86.530564] [] start_secondary+0xf9/0x100 [ 86.530564] Code: c6 0f ae e8 0f 31 48 c1 e2 20 48 09 c2 49 89 d4 eb 16 f3 90 bf 01 00 00 00 e8 43 ec d3 ff e8 4e ec 00 00 44 39 f0 75 36 0f ae e8 <0f> 31 48 c1 e2 20 48 89 d3 48 09 c3 48 89 d8 4c 29 e0 49 39 c5 [ 86.530564] NMI backtrace for cpu 11 [ 86.530564] CPU: 11 PID: 794 Comm: torture_onoff Tainted: G D 4.5.0-rc1+ #14 [ 86.530564] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 86.530564] task: ffff88007c67a580 ti: ffff88007c63c000 task.ti: ffff88007c63c000 [ 86.530564] RIP: 0010:[] [] default_send_IPI_mask_sequence_phys+0x9d/0xd0 [ 86.530564] RSP: 0000:ffff88007fb63dd0 EFLAGS: 00000046 [ 86.530564] RAX: 0000000000000400 RBX: 000000000000a130 RCX: 000000000000000b [ 86.530564] RDX: 000000000000000b RSI: 0000000000000010 RDI: 0000000000000300 [ 86.530564] RBP: ffff88007fb63e08 R08: 0000000000000000 R09: 000000000000dec5 [ 86.530564] R10: ffff88007c63ff58 R11: 00000000000002cd R12: ffffffff81f31740 [ 86.530564] R13: 0000000000000400 R14: 0000000000000002 R15: 000000000000000b [ 86.530564] FS: 0000000000000000(0000) GS:ffff88007fb60000(0000) knlGS:0000000000000000 [ 86.530564] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 86.530564] CR2: 0000000000000000 CR3: 0000000001e0f000 CR4: 00000000000006e0 [ 86.530564] Stack: [ 86.530564] 0000000000000082 0000000b7fb63de0 000000000000ff40 0000000000000001 [ 86.530564] ffffffff8103fd20 00000000cfbb42a0 0000000000000000 ffff88007fb63e18 [ 86.530564] ffffffff8103fd36 ffff88007fb63e60 ffffffff81331299 ffffffff81008b50 [ 86.530564] Call Trace: [ 86.530564] d [] ? irq_force_complete_move+0x20/0x20 [ 86.530564] [] nmi_raise_cpu_backtrace+0x16/0x20 [ 86.530564] [] nmi_trigger_all_cpu_backtrace+0x259/0x270 [ 86.530564] [] ? show_stack+0x20/0x50 [ 86.530564] [] arch_trigger_all_cpu_backtrace+0x14/0x20 [ 86.530564] [] do_raw_spin_lock+0xa5/0x150 [ 86.530564] [] _raw_spin_lock_irq+0x1b/0x20 [ 86.530564] [] run_timer_softirq+0x40/0x2b0 [ 86.530564] [] ? clockevents_program_event+0x7d/0x120 [ 86.530564] [] __do_softirq+0xd3/0x280 [ 86.530564] [] irq_exit+0x42/0x50 [ 86.530564] [] smp_apic_timer_interrupt+0x3d/0x50 [ 86.530564] [] apic_timer_interrupt+0x7f/0x90 [ 86.530564] d [] ? _raw_spin_unlock_irq+0xf/0x30 [ 86.530564] [] ? _raw_spin_unlock_irq+0x9/0x30 [ 86.530564] [] acct_collect+0x166/0x1a0 [ 86.530564] [] do_exit+0x4f9/0xc00 [ 86.530564] [] oops_end+0x84/0xb0 [ 86.530564] [] no_context+0x102/0x330 [ 86.530564] [] __bad_area_nosemaphore+0x75/0x1f0 [ 86.530564] [] bad_area_nosemaphore+0xe/0x10 [ 86.530564] [] __do_page_fault+0x85/0x450 [ 86.530564] [] do_page_fault+0xc/0x10 [ 86.530564] [] page_fault+0x22/0x30 [ 86.530564] [] ? migrate_timer_list+0x32/0xc0 [ 86.530564] [] timer_cpu_notify+0xe4/0x160 [ 86.530564] [] notifier_call_chain+0x45/0x70 [ 86.530564] [] __raw_notifier_call_chain+0x9/0x10 [ 86.530564] [] cpu_notify_nofail+0x1e/0x30 [ 86.530564] [] _cpu_down+0x212/0x350 [ 86.530564] [] ? __call_rcu.constprop.74+0x380/0x380 [ 86.530564] [] ? call_rcu_bh+0x20/0x20 [ 86.530564] [] ? __rcu_read_unlock+0x50/0x50 [ 86.530564] [] ? __rcu_read_unlock+0x50/0x50 [ 86.530564] [] cpu_down+0x2f/0x50 [ 86.530564] [] torture_onoff+0x115/0x380 [ 86.530564] [] ? torture_kthread_stopping+0x70/0x70 [ 86.530564] [] kthread+0xd6/0xf0 [ 86.530564] [] ? kthread_worker_fn+0x180/0x180 [ 86.530564] [] ret_from_fork+0x3f/0x70 [ 86.530564] [] ? kthread_worker_fn+0x180/0x180 [ 86.530564] Code: 90 8b 0c 25 00 c3 5f ff 80 e5 10 75 f2 89 d0 c1 e0 18 89 04 25 10 c3 5f ff 41 83 fe 02 44 89 e8 41 0f 45 c6 89 04 25 00 c3 5f ff 91 48 8b 05 32 09 ef 00 89 55 d4 ff 90 18 01 00 00 8b 55 d4 [ 86.530564] NMI backtrace for cpu 12 [ 86.530564] CPU: 12 PID: 790 Comm: rcu_torture_rea Tainted: G D 4.5.0-rc1+ #14 [ 86.530564] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 86.530564] task: ffff88007cb27080 ti: ffff88007c674000 task.ti: ffff88007c674000 [ 86.530564] RIP: 0010:[] [] delay_tsc+0x23/0xc0 [ 86.530564] RSP: 0000:ffff88007c677d00 EFLAGS: 00000002 [ 86.530564] RAX: 000000000000000c RBX: ffff88007fb6cc00 RCX: 0000000000000002 [ 86.530564] RDX: 0000000000000000 RSI: ffffffff81ca0d44 RDI: ffffffff81cbdfe7 [ 86.530564] RBP: ffff88007c677d20 R08: ffff88007c674000 R09: ffff88007fb6cc00 [ 86.530564] R10: ffff88007c677e30 R11: 000000000000002d R12: 00000000ab555708 [ 86.530564] R13: 0000000000000001 R14: 000000000000000c R15: ffff88007c677dd0 [ 86.530564] FS: 0000000000000000(0000) GS:ffff88007fb80000(0000) knlGS:0000000000000000 [ 86.530564] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 86.530564] CR2: 000055f32cd5f720 CR3: 0000000001e0f000 CR4: 00000000000006e0 [ 86.530564] Stack: [ 86.530564] ffff88007fb6cc00 00000000ab555708 0000000000000001 00000000cfbb42a0 [ 86.530564] ffff88007c677d30 ffffffff8133930a ffff88007c677d60 ffffffff810930c7 [ 86.530564] 0000000000000286 ffff88007fb6cc00 ffff88007fb6cc00 000000000000cc00 [ 86.530564] Call Trace: [ 86.530564] [] __delay+0xa/0x10 [ 86.530564] [] do_raw_spin_lock+0x87/0x150 [ 86.530564] [] _raw_spin_lock_irqsave+0x1f/0x30 [ 86.530564] [] lock_timer_base.isra.23+0x4f/0x70 [ 86.530564] [] mod_timer+0x6a/0x200 [ 86.530564] [] ? stutter_wait+0x49/0xc0 [ 86.530564] [] rcu_torture_reader+0x2a7/0x2e0 [ 86.530564] [] ? rcu_torture_reader+0x2e0/0x2e0 [ 86.530564] [] ? rcutorture_trace_dump.part.7+0x20/0x20 [ 86.530564] [] kthread+0xd6/0xf0 [ 86.530564] [] ? kthread_worker_fn+0x180/0x180 [ 86.530564] [] ret_from_fork+0x3f/0x70 [ 86.530564] [] ? kthread_worker_fn+0x180/0x180 [ 86.530564] Code: 5d 41 5e 41 5f 5d c3 90 55 48 89 e5 41 56 41 55 41 54 53 49 89 fd bf 01 00 00 00 e8 68 ec d3 ff e8 73 ec 00 00 41 89 c6 0f ae e8 <0f> 31 48 c1 e2 20 48 09 c2 49 89 d4 eb 16 f3 90 bf 01 00 00 00 [ 86.530564] NMI backtrace for cpu 14 [ 86.530564] CPU: 14 PID: 789 Comm: rcu_torture_rea Tainted: G D 4.5.0-rc1+ #14 [ 86.530564] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 86.530564] task: ffff88007cb26400 ti: ffff88007c670000 task.ti: ffff88007c670000 [ 86.530564] RIP: 0010:[] [] rcu_torture_read_lock+0x0/0x10 [ 86.530564] RSP: 0018:ffff88007c673e08 EFLAGS: 00000286 [ 86.530564] RAX: ffffffff81e47800 RBX: 0000000000000000 RCX: 0000000000000001 [ 86.530564] RDX: 0000000000000001 RSI: 0000000000000001 RDI: ffffffff81c9f0eb [ 86.530564] RBP: ffff88007c673ea8 R08: ffff88007c670000 R09: 0000000000000002 [ 86.530564] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 [ 86.530564] R13: 00000032c47e38a4 R14: 000000000000046f R15: ffffffff820d5fe0 [ 86.530564] FS: 0000000000000000(0000) GS:ffff88007fbc0000(0000) knlGS:0000000000000000 [ 86.530564] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 86.530564] CR2: 000055f32cd5f720 CR3: 0000000001e0f000 CR4: 00000000000006e0 [ 86.530564] Stack: [ 86.530564] ffffffff810ad405 0000000000000000 0000000000015380 c7b7bbe7a8e3038e [ 86.530564] 0000000000000b1c ffff88007cbbbe30 ffff88007c5f3e30 00000000fffcd063 [ 86.530564] ffffffff810ad590 0000000000000000 ffffffff0000000e 00000000ffffffff [ 86.530564] Call Trace: [ 86.530564] [] ? rcu_torture_reader+0x155/0x2e0 [ 86.530564] [] ? rcu_torture_reader+0x2e0/0x2e0 [ 86.530564] [] ? rcutorture_trace_dump.part.7+0x20/0x20 [ 86.530564] [] kthread+0xd6/0xf0 [ 86.530564] [] ? kthread_worker_fn+0x180/0x180 [ 86.530564] [] ret_from_fork+0x3f/0x70 [ 86.530564] [] ? kthread_worker_fn+0x180/0x180 [ 86.530564] Code: 48 8d 3c 13 48 8b 0c 11 48 8b 14 37 89 c6 48 c7 c7 4c f0 c9 81 e8 70 ac 07 00 eb 94 0f 1f 44 00 00 66 2e 0f 1f 84 00 00 00 00 00 <55> 48 89 e5 e8 47 b1 ff ff 31 c0 5d c3 0f 1f 00 80 3d e1 ad d9 [ 86.530564] NMI backtrace for cpu 15 [ 86.530564] CPU: 15 PID: 778 Comm: rcu_torture_rea Tainted: G D 4.5.0-rc1+ #14 [ 86.530564] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 86.530564] task: ffff88007c66d780 ti: ffff88007c664000 task.ti: ffff88007c664000 [ 86.530564] RIP: 0010:[] [] rcu_read_delay+0x5c/0xb0 [ 86.530564] RSP: 0018:ffff88007c667df0 EFLAGS: 00000202 [ 86.530564] RAX: 00000000000970a2 RBX: 0000000000000000 RCX: 0000000000001770 [ 86.530564] RDX: 000000000000087c RSI: ffff88007fbf27d8 RDI: ffff88007c667e20 [ 86.530564] RBP: ffff88007c667e00 R08: ffff88007c664000 R09: ffff88007fbf53f0 [ 86.530564] R10: ffff88007c667e30 R11: 0000000000000001 R12: ffff88007c667e20 [ 86.530564] R13: 00000032c47e463e R14: 000000000000046f R15: ffffffff820d5fe0 [ 86.530564] FS: 0000000000000000(0000) GS:ffff88007fbe0000(0000) knlGS:0000000000000000 [ 86.530564] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 86.530564] CR2: 000055f32cd5f720 CR3: 0000000001e0f000 CR4: 00000000000006e0 [ 86.530564] Stack: [ 86.530564] 0000000000000000 0000000000000000 ffff88007c667ea8 ffffffff810ad458 [ 86.530564] 0000000000000000 0000000081a0a240 7de1a6dcdd5cdd3f 000000000000140e [ 86.530564] ffff88007c5e3de0 ffff88007fbecf60 00000000fffcd063 ffffffff810ad590 [ 86.530564] Call Trace: [ 86.530564] [] rcu_torture_reader+0x1a8/0x2e0 [ 86.530564] [] ? rcu_torture_reader+0x2e0/0x2e0 [ 86.530564] [] ? rcutorture_trace_dump.part.7+0x20/0x20 [ 86.530564] [] kthread+0xd6/0xf0 [ 86.530564] [] ? kthread_worker_fn+0x180/0x180 [ 86.530564] [] ret_from_fork+0x3f/0x70 [ 86.530564] [] ? kthread_worker_fn+0x180/0x180 [ 86.530564] Code: e8 8a b5 28 00 48 83 eb 01 75 f0 4c 89 e7 e8 6c 83 07 00 48 63 15 d9 94 02 01 48 8d 14 92 48 8d 0c 92 31 d2 48 c1 e1 04 48 f7 f1 <48> 85 d2 74 3c 65 8b 05 d8 cf f5 7e a9 ff ff ff 7f 74 05 5b 41 [ 86.637011] BUG: spinlock lockup suspected on CPU#10, swapper/10/0 [ 86.637011] lock: 0xffff88007fb6cc00, .magic: dead4ead, .owner: torture_onoff/794, .owner_cpu: 11 [ 86.637011] CPU: 10 PID: 0 Comm: swapper/10 Tainted: G D 4.5.0-rc1+ #14 [ 86.637011] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 86.637011] ffff88007fb6cc00 ffff88007fb43d88 ffffffff8132cd6c ffff88007c67a580 [ 86.637011] ffff88007fb43da8 ffffffff81092fb3 ffff88007fb6cc00 00000000cfbb42a0 [ 86.637011] ffff88007fb43dd8 ffffffff810930db ffff88007fb6cc00 ffffffff820d8c80 [ 86.637011] Call Trace: [ 86.637011] [] dump_stack+0x4e/0x82 [ 86.637011] [] spin_dump+0x73/0xc0 [ 86.637011] [] do_raw_spin_lock+0x9b/0x150 [ 86.637011] [] _raw_spin_lock+0x1a/0x20 [ 86.637011] [] add_timer_on+0x76/0x150 [ 86.637011] [] clocksource_watchdog+0x217/0x2f0 [ 86.637011] [] ? clocksource_unregister+0x50/0x50 [ 86.637011] [] call_timer_fn+0x30/0x120 [ 86.637011] [] ? clocksource_unregister+0x50/0x50 [ 86.637011] [] run_timer_softirq+0x20b/0x2b0 [ 86.637011] [] __do_softirq+0xd3/0x280 [ 86.637011] [] irq_exit+0x42/0x50 [ 86.637011] [] smp_apic_timer_interrupt+0x3d/0x50 [ 86.637011] [] apic_timer_interrupt+0x7f/0x90 [ 86.637011] [] ? default_idle+0x13/0xd0 [ 86.637011] [] arch_cpu_idle+0xa/0x10 [ 86.637011] [] default_idle_call+0x25/0x30 [ 86.637011] [] cpu_startup_entry+0x287/0x2e0 [ 86.637011] [] start_secondary+0xf9/0x100 [ 86.637011] Sending NMI to all CPUs: [ 86.637011] NMI backtrace for cpu 0 [ 86.637011] CPU: 0 PID: 777 Comm: rcu_torture_rea Tainted: G D 4.5.0-rc1+ #14 [ 86.637011] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 86.637011] task: ffff88007c66be80 ti: ffff88007c660000 task.ti: ffff88007c660000 [ 86.637011] RIP: 0010:[] [] delay_tsc+0x23/0xc0 [ 86.637011] RSP: 0018:ffff88007c663d00 EFLAGS: 00000002 [ 86.637011] RAX: 0000000000000000 RBX: ffff88007fbacc00 RCX: 0000000000000002 [ 86.637011] RDX: 0000000000000000 RSI: ffffffff81ca0d44 RDI: ffffffff81cbdfe7 [ 86.637011] RBP: ffff88007c663d20 R08: ffff88007c660000 R09: ffff88007fbacc00 [ 86.637011] R10: ffff88007c663e30 R11: 0000000000000001 R12: 00000000bfcdebc0 [ 86.637011] R13: 0000000000000001 R14: 0000000000000000 R15: ffff88007c663dd0 [ 86.637011] FS: 0000000000000000(0000) GS:ffff88007fa00000(0000) knlGS:0000000000000000 [ 86.637011] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 86.637011] CR2: 000055f32cd75020 CR3: 0000000001e0f000 CR4: 00000000000006f0 [ 86.637011] Stack: [ 86.637011] ffff88007fbacc00 00000000bfcdebc0 0000000000000001 00000000cfbb42a0 [ 86.637011] ffff88007c663d30 ffffffff8133930a ffff88007c663d60 ffffffff810930c7 [ 86.637011] 0000000000000286 ffff88007fbacc00 ffff88007fbacc00 000000000000cc00 [ 86.637011] Call Trace: [ 86.637011] [] __delay+0xa/0x10 [ 86.637011] [] do_raw_spin_lock+0x87/0x150 [ 86.637011] [] _raw_spin_lock_irqsave+0x1f/0x30 [ 86.637011] [] lock_timer_base.isra.23+0x4f/0x70 [ 86.637011] [] mod_timer+0x6a/0x200 [ 86.637011] [] ? preempt_schedule+0x30/0x30 [ 86.637011] [] rcu_torture_reader+0x2a7/0x2e0 [ 86.637011] [] ? rcu_torture_reader+0x2e0/0x2e0 [ 86.637011] [] ? rcutorture_trace_dump.part.7+0x20/0x20 [ 86.637011] [] kthread+0xd6/0xf0 [ 86.637011] [] ? kthread_worker_fn+0x180/0x180 [ 86.637011] [] ret_from_fork+0x3f/0x70 [ 86.637011] [] ? kthread_worker_fn+0x180/0x180 [ 86.637011] Code: 5d 41 5e 41 5f 5d c3 90 55 48 89 e5 41 56 41 55 41 54 53 49 89 fd bf 01 00 00 00 e8 68 ec d3 ff e8 73 ec 00 00 41 89 c6 0f ae e8 <0f> 31 48 c1 e2 20 48 09 c2 49 89 d4 eb 16 f3 90 bf 01 00 00 00 [ 86.637011] NMI backtrace for cpu 2 [ 86.637011] CPU: 2 PID: 787 Comm: rcu_torture_rea Tainted: G D 4.5.0-rc1+ #14 [ 86.637011] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 86.637011] task: ffff88007cb24b00 ti: ffff88007c680000 task.ti: ffff88007c680000 [ 86.637011] RIP: 0010:[] [] preempt_count_add+0x0/0xc0 [ 86.637011] RSP: 0018:ffff88007c683da8 EFLAGS: 00000286 [ 86.637011] RAX: 0000000080000000 RBX: 000000bbab34b2ec RCX: 0000000000000001 [ 86.637011] RDX: 0000000080000001 RSI: ffffffff81ca0d44 RDI: 0000000000000001 [ 86.637011] RBP: ffff88007c683dd0 R08: ffff88007c680000 R09: ffff88007fa553f0 [ 86.637011] R10: 0000000000000000 R11: 0000000000000001 R12: 000000bbab1b5ef0 [ 86.637011] R13: 0000000000351e94 R14: 0000000000000002 R15: ffffffff820d5fe0 [ 86.637011] FS: 0000000000000000(0000) GS:ffff88007fa40000(0000) knlGS:0000000000000000 [ 86.637011] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 86.637011] CR2: 0000000000000000 CR3: 0000000001e0f000 CR4: 00000000000006e0 [ 86.637011] Stack: [ 86.637011] ffffffff8133946d 0000000000000006 ffff88007c683e20 00000035d5ff8437 [ 86.637011] 000000000000046f ffff88007c683de0 ffffffff81339337 ffff88007c683e00 [ 86.637011] ffffffff810add86 0000000000000000 0000000000000000 ffff88007c683ea8 [ 86.637011] Call Trace: [ 86.637011] [] ? delay_tsc+0x3d/0xc0 [ 86.637011] [] __const_udelay+0x27/0x30 [ 86.637011] [] rcu_read_delay+0x36/0xb0 [ 86.637011] [] rcu_torture_reader+0x1a8/0x2e0 [ 86.637011] [] ? rcu_torture_reader+0x2e0/0x2e0 [ 86.637011] [] ? rcutorture_trace_dump.part.7+0x20/0x20 [ 86.637011] [] kthread+0xd6/0xf0 [ 86.637011] [] ? kthread_worker_fn+0x180/0x180 [ 86.637011] [] ret_from_fork+0x3f/0x70 [ 86.637011] [] ? kthread_worker_fn+0x180/0x180 [ 86.637011] Code: 3d ba b3 e9 00 00 75 b4 be 44 01 00 00 48 c7 c7 fb dd c9 81 e8 72 f1 fd ff c6 05 a0 b3 e9 00 01 eb 9a 66 0f 1f 84 00 00 00 00 00 <8b> 15 02 a7 01 01 55 65 01 3d d2 2c f9 7e 48 89 e5 53 89 fb 85 [ 86.637011] NMI backtrace for cpu 6 [ 86.637011] CPU: 6 PID: 784 Comm: rcu_torture_rea Tainted: G D 4.5.0-rc1+ #14 [ 86.637011] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 86.637011] task: ffff88007cb22580 ti: ffff88007c624000 task.ti: ffff88007c624000 [ 86.637011] RIP: 0010:[] [] rcu_read_delay+0x5c/0xb0 [ 86.637011] RSP: 0018:ffff88007c627df0 EFLAGS: 00000202 [ 86.637011] RAX: 000000000005640c RBX: 0000000000000000 RCX: 0000000000001770 [ 86.637011] RDX: 0000000000000b4f RSI: ffff88007fad27d8 RDI: ffff88007c627e20 [ 86.637011] RBP: ffff88007c627e00 R08: ffff88007c624000 R09: ffff88007fad53f0 [ 86.637011] R10: ffff88007c627e30 R11: 000000000000005a R12: ffff88007c627e20 [ 86.637011] R13: 00000035db3bb386 R14: 000000000000046f R15: ffffffff820d5fe0 [ 86.637011] FS: 0000000000000000(0000) GS:ffff88007fac0000(0000) knlGS:0000000000000000 [ 86.637011] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 86.637011] CR2: 000055f32cd5f720 CR3: 0000000001e0f000 CR4: 00000000000006e0 [ 86.637011] Stack: [ 86.637011] 0000000000000000 0000000000000000 ffff88007c627ea8 ffffffff810ad458 [ 86.637011] 0000000000000000 0000000081a0a240 770957c6e48f7e58 00000000000011d6 [ 86.637011] ffff88007cc53d40 ffff88007c50bdf0 00000000fffcd063 ffffffff810ad590 [ 86.637011] Call Trace: [ 86.637011] [] rcu_torture_reader+0x1a8/0x2e0 [ 86.637011] [] ? rcu_torture_reader+0x2e0/0x2e0 [ 86.637011] [] ? rcutorture_trace_dump.part.7+0x20/0x20 [ 86.637011] [] kthread+0xd6/0xf0 [ 86.637011] [] ? kthread_worker_fn+0x180/0x180 [ 86.637011] [] ret_from_fork+0x3f/0x70 [ 86.637011] [] ? kthread_worker_fn+0x180/0x180 [ 86.637011] Code: e8 8a b5 28 00 48 83 eb 01 75 f0 4c 89 e7 e8 6c 83 07 00 48 63 15 d9 94 02 01 48 8d 14 92 48 8d 0c 92 31 d2 48 c1 e1 04 48 f7 f1 <48> 85 d2 74 3c 65 8b 05 d8 cf f5 7e a9 ff ff ff 7f 74 05 5b 41 [ 86.637011] NMI backtrace for cpu 7 [ 86.637011] CPU: 7 PID: 783 Comm: rcu_torture_rea Tainted: G D 4.5.0-rc1+ #14 [ 86.637011] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 86.637011] task: ffff88007cb21900 ti: ffff88007c620000 task.ti: ffff88007c620000 [ 86.637011] RIP: 0010:[] [] check_preemption_disabled+0x8/0xe0 [ 86.637011] RSP: 0018:ffff88007c623d90 EFLAGS: 00000246 [ 86.637011] RAX: 0000000080000001 RBX: 000000bbab350fbc RCX: 0000000000000001 [ 86.637011] RDX: 0000000000000000 RSI: ffffffff81ca0d44 RDI: ffffffff81cbdfe7 [ 86.637011] RBP: ffff88007c623da0 R08: ffff88007c620000 R09: 0000000000000002 [ 86.637011] R10: 0000000000000000 R11: 0000000000000001 R12: 000000bbab33726c [ 86.637011] R13: 00000000000a9fc1 R14: 0000000000000007 R15: ffffffff820d5fe0 [ 86.637011] FS: 0000000000000000(0000) GS:ffff88007fae0000(0000) knlGS:0000000000000000 [ 86.637011] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 86.637011] CR2: 000055f32cd5f720 CR3: 0000000001e0f000 CR4: 00000000000006e0 [ 86.637011] Stack: [ 86.637011] ffff88007c623da0 ffffffff813480d7 ffff88007c623dd0 ffffffff81339472 [ 86.637011] 0000000000000000 ffff88007c623e20 00000035db3b4939 000000000000046f [ 86.637011] ffff88007c623de0 ffffffff81339337 ffff88007c623e00 ffffffff810addf7 [ 86.637011] Call Trace: [ 86.637011] [] ? debug_smp_processor_id+0x17/0x20 [ 86.637011] [] delay_tsc+0x42/0xc0 [ 86.637011] [] __const_udelay+0x27/0x30 [ 86.637011] [] rcu_read_delay+0xa7/0xb0 [ 86.637011] [] rcu_torture_reader+0x1a8/0x2e0 [ 86.637011] [] ? rcu_torture_reader+0x2e0/0x2e0 [ 86.637011] [] ? rcutorture_trace_dump.part.7+0x20/0x20 [ 86.637011] [] kthread+0xd6/0xf0 [ 86.637011] [] ? kthread_worker_fn+0x180/0x180 [ 86.637011] [] ret_from_fork+0x3f/0x70 [ 86.637011] [] ? kthread_worker_fn+0x180/0x180 [ 86.637011] Code: 40 08 00 00 00 00 e9 1b ff ff ff 4d 89 e7 4c 8b 6d c8 49 83 cf 01 e9 0b ff ff ff 0f 1f 84 00 00 00 00 00 55 65 8b 05 a8 2d cc 7e <48> 89 e5 41 56 41 55 41 54 53 65 8b 1d 27 21 cc 7e a9 ff ff ff [ 86.637011] NMI backtrace for cpu 9 [ 86.637011] CPU: 9 PID: 780 Comm: rcu_torture_rea Tainted: G D 4.5.0-rc1+ #14 [ 86.637011] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 86.637011] task: ffff88007c66a580 ti: ffff88007c654000 task.ti: ffff88007c654000 [ 86.637011] RIP: 0010:[] [] rcu_torture_reader+0xb7/0x2e0 [ 86.637011] RSP: 0018:ffff88007c657e10 EFLAGS: 00000202 [ 86.637011] RAX: ffffffff81e47800 RBX: ffffffffffffffff RCX: 00000000000493e0 [ 86.637011] RDX: 0000000000000000 RSI: ffffffff81d29759 RDI: ffffffff81cbdff8 [ 86.637011] RBP: ffff88007c657ea8 R08: ffff88007c654000 R09: ffff88007fb353f0 [ 86.637011] R10: ffff88007c657e30 R11: 0000000000000078 R12: 0000000000000000 [ 86.637011] R13: 00000035db3bcddb R14: 000000000000046f R15: ffffffff820d5fe0 [ 86.637011] FS: 0000000000000000(0000) GS:ffff88007fb20000(0000) knlGS:0000000000000000 [ 86.637011] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 86.637011] CR2: 000055f32cd5f720 CR3: 000000007b0a0000 CR4: 00000000000006e0 [ 86.637011] Stack: [ 86.637011] 0000000000000000 0000000081a0a240 65698c08e52fd545 0000000000000aad [ 86.637011] 0000000000000000 ffff88007fb2cf60 00000000fffcd063 ffffffff810ad590 [ 86.637011] 0000000000000000 ffffffff00000009 00000000ffffffff 0000000000000000 [ 86.637011] Call Trace: [ 86.637011] [] ? rcu_torture_reader+0x2e0/0x2e0 [ 86.637011] [] ? rcutorture_trace_dump.part.7+0x20/0x20 [ 86.637011] [] kthread+0xd6/0xf0 [ 86.637011] [] ? kthread_worker_fn+0x180/0x180 [ 86.637011] [] ret_from_fork+0x3f/0x70 [ 86.637011] [] ? kthread_worker_fn+0x180/0x180 [ 86.637011] Code: e9 9a 00 00 00 ff 50 38 41 83 fc 01 48 89 c3 0f 8f 32 01 00 00 48 c7 c7 59 97 d2 81 4c 29 f3 e8 80 ad 29 00 48 8b 05 69 8a 02 01 <48> c7 c7 59 97 d2 81 65 4a ff 04 e5 40 cb 00 00 48 83 78 30 01 [ 86.637011] NMI backtrace for cpu 10 [ 86.637011] CPU: 10 PID: 0 Comm: swapper/10 Tainted: G D 4.5.0-rc1+ #14 [ 86.637011] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 86.637011] task: ffff88007cc98c80 ti: ffff88007cca4000 task.ti: ffff88007cca4000 [ 86.637011] RIP: 0010:[] [] default_send_IPI_mask_sequence_phys+0x9d/0xd0 [ 86.637011] RSP: 0018:ffff88007fb43d08 EFLAGS: 00000046 [ 86.637011] RAX: 0000000000000400 RBX: 000000000000a130 RCX: 000000000000000a [ 86.637011] RDX: 000000000000000a RSI: 0000000000000010 RDI: 0000000000000300 [ 86.637011] RBP: ffff88007fb43d40 R08: 0000000000000000 R09: 000000000000dec5 [ 86.637011] R10: ffff88007cca7f58 R11: 0000000000000434 R12: ffffffff81f31740 [ 86.637011] R13: 0000000000000400 R14: 0000000000000002 R15: 000000000000000a [ 86.637011] FS: 0000000000000000(0000) GS:ffff88007fb40000(0000) knlGS:0000000000000000 [ 86.637011] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 86.637011] CR2: 000055f32cd5f720 CR3: 0000000001e0f000 CR4: 00000000000006e0 [ 86.637011] Stack: [ 86.637011] 0000000000000082 0000000a7fb43d18 000000000000ff40 0000000000000001 [ 86.637011] ffffffff8103fd20 00000000cfbb42a0 0000000000000000 ffff88007fb43d50 [ 86.637011] ffffffff8103fd36 ffff88007fb43d98 ffffffff81331299 ffffffff81008b50 [ 86.637011] Call Trace: [ 86.637011] d [] ? irq_force_complete_move+0x20/0x20 [ 86.637011] [] nmi_raise_cpu_backtrace+0x16/0x20 [ 86.637011] [] nmi_trigger_all_cpu_backtrace+0x259/0x270 [ 86.637011] [] ? show_stack+0x20/0x50 [ 86.637011] [] arch_trigger_all_cpu_backtrace+0x14/0x20 [ 86.637011] [] do_raw_spin_lock+0xa5/0x150 [ 86.637011] [] _raw_spin_lock+0x1a/0x20 [ 86.637011] [] add_timer_on+0x76/0x150 [ 86.637011] [] clocksource_watchdog+0x217/0x2f0 [ 86.637011] [] ? clocksource_unregister+0x50/0x50 [ 86.637011] [] call_timer_fn+0x30/0x120 [ 86.637011] [] ? clocksource_unregister+0x50/0x50 [ 86.637011] [] run_timer_softirq+0x20b/0x2b0 [ 86.637011] [] __do_softirq+0xd3/0x280 [ 86.637011] [] irq_exit+0x42/0x50 [ 86.637011] [] smp_apic_timer_interrupt+0x3d/0x50 [ 86.637011] [] apic_timer_interrupt+0x7f/0x90 [ 86.637011] d [] ? default_idle+0x13/0xd0 [ 86.637011] [] arch_cpu_idle+0xa/0x10 [ 86.637011] [] default_idle_call+0x25/0x30 [ 86.637011] [] cpu_startup_entry+0x287/0x2e0 [ 86.637011] [] start_secondary+0xf9/0x100 [ 86.637011] Code: 90 8b 0c 25 00 c3 5f ff 80 e5 10 75 f2 89 d0 c1 e0 18 89 04 25 10 c3 5f ff 41 83 fe 02 44 89 e8 41 0f 45 c6 89 04 25 00 c3 5f ff 91 48 8b 05 32 09 ef 00 89 55 d4 ff 90 18 01 00 00 8b 55 d4 [ 86.637011] NMI backtrace for cpu 11 [ 86.637011] CPU: 11 PID: 794 Comm: torture_onoff Tainted: G D 4.5.0-rc1+ #14 [ 86.637011] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 86.637011] task: ffff88007c67a580 ti: ffff88007c63c000 task.ti: ffff88007c63c000 [ 86.637011] RIP: 0010:[] [] queued_spin_lock_slowpath+0x171/0x1a0 [ 86.637011] RSP: 0000:ffff88007fb63e58 EFLAGS: 00000002 [ 86.637011] RAX: 0000000000000101 RBX: ffff88007fb6cc00 RCX: 0000000000000001 [ 86.637011] RDX: 0000000000000101 RSI: 0000000000000001 RDI: 0000000000000101 [ 86.637011] RBP: ffff88007fb63e70 R08: 00000000000006e7 R09: 0000000000000418 [ 86.637011] R10: ffff88007c63ff58 R11: 0000000000000418 R12: 00000000cfbb42a0 [ 86.637011] R13: 0000000000000001 R14: 00000000cfbb42a0 R15: 0000000000000000 [ 86.637011] FS: 0000000000000000(0000) GS:ffff88007fb60000(0000) knlGS:0000000000000000 [ 86.637011] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 86.637011] CR2: 0000000000000000 CR3: 0000000001e0f000 CR4: 00000000000006e0 [ 86.637011] Stack: [ 86.637011] ffff88007fb6cc00 00000000cfbb42a0 0000000000000001 ffff88007fb63ea0 [ 86.637011] ffffffff81093185 ffff88007fb6cc00 ffffffff81e080c8 0000000000000001 [ 86.637011] 0000000000000001 ffff88007fb63eb8 ffffffff818b3ffb ffff88007fb6cc00 [ 86.637011] Call Trace: [ 86.637011] d [] do_raw_spin_lock+0x145/0x150 [ 86.637011] [] _raw_spin_lock_irq+0x1b/0x20 [ 86.637011] [] run_timer_softirq+0x40/0x2b0 [ 86.637011] [] ? clockevents_program_event+0x7d/0x120 [ 86.637011] [] __do_softirq+0xd3/0x280 [ 86.637011] [] irq_exit+0x42/0x50 [ 86.637011] [] smp_apic_timer_interrupt+0x3d/0x50 [ 86.637011] [] apic_timer_interrupt+0x7f/0x90 [ 86.637011] d [] ? _raw_spin_unlock_irq+0xf/0x30 [ 86.637011] [] ? _raw_spin_unlock_irq+0x9/0x30 [ 86.637011] [] acct_collect+0x166/0x1a0 [ 86.637011] [] do_exit+0x4f9/0xc00 [ 86.637011] [] oops_end+0x84/0xb0 [ 86.637011] [] no_context+0x102/0x330 [ 86.637011] [] __bad_area_nosemaphore+0x75/0x1f0 [ 86.637011] [] bad_area_nosemaphore+0xe/0x10 [ 86.637011] [] __do_page_fault+0x85/0x450 [ 86.637011] [] do_page_fault+0xc/0x10 [ 86.637011] [] page_fault+0x22/0x30 [ 86.637011] [] ? migrate_timer_list+0x32/0xc0 [ 86.637011] [] timer_cpu_notify+0xe4/0x160 [ 86.637011] [] notifier_call_chain+0x45/0x70 [ 86.637011] [] __raw_notifier_call_chain+0x9/0x10 [ 86.637011] [] cpu_notify_nofail+0x1e/0x30 [ 86.637011] [] _cpu_down+0x212/0x350 [ 86.637011] [] ? __call_rcu.constprop.74+0x380/0x380 [ 86.637011] [] ? call_rcu_bh+0x20/0x20 [ 86.637011] [] ? __rcu_read_unlock+0x50/0x50 [ 86.637011] [] ? __rcu_read_unlock+0x50/0x50 [ 86.637011] [] cpu_down+0x2f/0x50 [ 86.637011] [] torture_onoff+0x115/0x380 [ 86.637011] [] ? torture_kthread_stopping+0x70/0x70 [ 86.637011] [] kthread+0xd6/0xf0 [ 86.637011] [] ? kthread_worker_fn+0x180/0x180 [ 86.637011] [] ret_from_fork+0x3f/0x70 [ 86.637011] [] ? kthread_worker_fn+0x180/0x180 [ 86.637011] Code: d0 66 31 c0 39 c7 74 e7 4d 85 c0 c6 03 01 74 30 41 c7 40 08 01 00 00 00 e9 4e ff ff ff 83 fa 01 75 07 e9 4b ff ff ff f3 90 8b 03 <84> c0 75 f8 b8 01 00 00 00 66 89 03 5b 41 5c 41 5d 5d c3 f3 90 [ 86.637011] NMI backtrace for cpu 12 [ 86.637011] CPU: 12 PID: 790 Comm: rcu_torture_rea Tainted: G D 4.5.0-rc1+ #14 [ 86.637011] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 86.637011] task: ffff88007cb27080 ti: ffff88007c674000 task.ti: ffff88007c674000 [ 86.637011] RIP: 0010:[] [] delay_tsc+0x23/0xc0 [ 86.637011] RSP: 0000:ffff88007c677d00 EFLAGS: 00000002 [ 86.637011] RAX: 000000000000000c RBX: ffff88007fb6cc00 RCX: 0000000000000002 [ 86.637011] RDX: 0000000000000000 RSI: ffffffff81ca0d44 RDI: ffffffff81cbdfe7 [ 86.637011] RBP: ffff88007c677d20 R08: ffff88007c674000 R09: ffff88007fb6cc00 [ 86.637011] R10: ffff88007c677e30 R11: 000000000000002d R12: 00000000bc78e940 [ 86.637011] R13: 0000000000000001 R14: 000000000000000c R15: ffff88007c677dd0 [ 86.637011] FS: 0000000000000000(0000) GS:ffff88007fb80000(0000) knlGS:0000000000000000 [ 86.637011] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 86.637011] CR2: 000055f32cd5f720 CR3: 0000000001e0f000 CR4: 00000000000006e0 [ 86.637011] Stack: [ 86.637011] ffff88007fb6cc00 00000000bc78e940 0000000000000001 00000000cfbb42a0 [ 86.637011] ffff88007c677d30 ffffffff8133930a ffff88007c677d60 ffffffff810930c7 [ 86.637011] 0000000000000286 ffff88007fb6cc00 ffff88007fb6cc00 000000000000cc00 [ 86.637011] Call Trace: [ 86.637011] [] __delay+0xa/0x10 [ 86.637011] [] do_raw_spin_lock+0x87/0x150 [ 86.637011] [] _raw_spin_lock_irqsave+0x1f/0x30 [ 86.637011] [] lock_timer_base.isra.23+0x4f/0x70 [ 86.637011] [] mod_timer+0x6a/0x200 [ 86.637011] [] ? stutter_wait+0x49/0xc0 [ 86.637011] [] rcu_torture_reader+0x2a7/0x2e0 [ 86.637011] [] ? rcu_torture_reader+0x2e0/0x2e0 [ 86.637011] [] ? rcutorture_trace_dump.part.7+0x20/0x20 [ 86.637011] [] kthread+0xd6/0xf0 [ 86.637011] [] ? kthread_worker_fn+0x180/0x180 [ 86.637011] [] ret_from_fork+0x3f/0x70 [ 86.637011] [] ? kthread_worker_fn+0x180/0x180 [ 86.637011] Code: 5d 41 5e 41 5f 5d c3 90 55 48 89 e5 41 56 41 55 41 54 53 49 89 fd bf 01 00 00 00 e8 68 ec d3 ff e8 73 ec 00 00 41 89 c6 0f ae e8 <0f> 31 48 c1 e2 20 48 09 c2 49 89 d4 eb 16 f3 90 bf 01 00 00 00 [ 86.637011] NMI backtrace for cpu 14 [ 86.637011] CPU: 14 PID: 781 Comm: rcu_torture_rea Tainted: G D 4.5.0-rc1+ #14 [ 86.637011] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 86.637011] task: ffff88007cb20000 ti: ffff88007c5f0000 task.ti: ffff88007c5f0000 [ 86.637011] RIP: 0010:[] [] delay_tsc+0x4c/0xc0 [ 86.637011] RSP: 0018:ffff88007c5f3db0 EFLAGS: 00000246 [ 86.637011] RAX: 00000000ab382c5e RBX: 000000bbab382bb2 RCX: 0000000000000001 [ 86.637011] RDX: 00000000000000bb RSI: ffffffff81ca0d44 RDI: ffffffff81cbdfe7 [ 86.637011] RBP: ffff88007c5f3dd0 R08: ffff88007c5f0000 R09: 0000000000000002 [ 86.637011] R10: 0000000000000000 R11: 0000000000000001 R12: 000000bbab1b3e52 [ 86.637011] R13: 0000000000352dff R14: 000000000000000e R15: ffffffff820d5fe0 [ 86.637011] FS: 0000000000000000(0000) GS:ffff88007fbc0000(0000) knlGS:0000000000000000 [ 86.637011] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 86.637011] CR2: 000055f32cd5f720 CR3: 0000000001e0f000 CR4: 00000000000006e0 [ 86.637011] Stack: [ 86.637011] 000000000000000a ffff88007c5f3e20 00000035d411b4b5 000000000000046f [ 86.637011] ffff88007c5f3de0 ffffffff81339337 ffff88007c5f3e00 ffffffff810add86 [ 86.637011] 0000000000000000 0000000000000000 ffff88007c5f3ea8 ffffffff810ad458 [ 86.637011] Call Trace: [ 86.637011] [] __const_udelay+0x27/0x30 [ 86.637011] [] rcu_read_delay+0x36/0xb0 [ 86.637011] [] rcu_torture_reader+0x1a8/0x2e0 [ 86.637011] [] ? rcu_torture_reader+0x2e0/0x2e0 [ 86.637011] [] ? rcutorture_trace_dump.part.7+0x20/0x20 [ 86.637011] [] kthread+0xd6/0xf0 [ 86.637011] [] ? kthread_worker_fn+0x180/0x180 [ 86.637011] [] ret_from_fork+0x3f/0x70 [ 86.637011] [] ? kthread_worker_fn+0x180/0x180 [ 86.637011] Code: ae e8 0f 31 48 c1 e2 20 48 09 c2 49 89 d4 eb 16 f3 90 bf 01 00 00 00 e8 43 ec d3 ff e8 4e ec 00 00 44 39 f0 75 36 0f ae e8 0f 31 <48> c1 e2 20 48 89 d3 48 09 c3 48 89 d8 4c 29 e0 49 39 c5 76 24 [ 86.637011] NMI backtrace for cpu 15 [ 86.637011] CPU: 15 PID: 778 Comm: rcu_torture_rea Tainted: G D 4.5.0-rc1+ #14 [ 86.637011] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 86.637011] task: ffff88007c66d780 ti: ffff88007c664000 task.ti: ffff88007c664000 [ 86.637011] RIP: 0010:[] [] check_preemption_disabled+0x1/0xe0 [ 86.637011] RSP: 0018:ffff88007c667df0 EFLAGS: 00000246 [ 86.637011] RAX: ffffffff81e47800 RBX: 0000000000000000 RCX: 00000000000493e0 [ 86.637011] RDX: 0000000000000000 RSI: ffffffff81d29759 RDI: ffffffff81cbdff8 [ 86.637011] RBP: ffff88007c667e00 R08: ffff88007c664000 R09: ffff88007fbf53f0 [ 86.637011] R10: ffff88007c667e30 R11: 0000000000000001 R12: 0000000000000000 [ 86.637011] R13: 00000035db3cb383 R14: 000000000000046f R15: ffffffff820d5fe0 [ 86.637011] FS: 0000000000000000(0000) GS:ffff88007fbe0000(0000) knlGS:0000000000000000 [ 86.637011] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 86.637011] CR2: 000055f32cd5f720 CR3: 0000000001e0f000 CR4: 00000000000006e0 [ 86.637011] Stack: [ 86.637011] ffff88007c667e00 ffffffff813480f3 ffff88007c667ea8 ffffffff810ad385 [ 86.637011] 0000000000000000 0000000081a0a240 294a84bcaaa92a92 0000000000000890 [ 86.637011] ffff88007c5e3de0 ffff88007fbecf60 00000000fffcd063 ffffffff810ad590 [ 86.637011] Call Trace: [ 86.637011] [] ? __this_cpu_preempt_check+0x13/0x20 [ 86.637011] [] rcu_torture_reader+0xd5/0x2e0 [ 86.637011] [] ? rcu_torture_reader+0x2e0/0x2e0 [ 86.637011] [] ? rcutorture_trace_dump.part.7+0x20/0x20 [ 86.637011] [] kthread+0xd6/0xf0 [ 86.637011] [] ? kthread_worker_fn+0x180/0x180 [ 86.637011] [] ret_from_fork+0x3f/0x70 [ 86.637011] [] ? kthread_worker_fn+0x180/0x180 [ 86.637011] Code: 00 00 00 49 89 f7 c7 40 08 00 00 00 00 e9 1b ff ff ff 4d 89 e7 4c 8b 6d c8 49 83 cf 01 e9 0b ff ff ff 0f 1f 84 00 00 00 00 00 55 <65> 8b 05 a8 2d cc 7e 48 89 e5 41 56 41 55 41 54 53 65 8b 1d 27 [ 91.202005] BUG: spinlock lockup suspected on CPU#0, rcu_torture_rea/777 [ 91.202005] lock: 0xffff88007fbacc00, .magic: dead4ead, .owner: torture_onoff/794, .owner_cpu: 11 [ 91.202005] CPU: 0 PID: 777 Comm: rcu_torture_rea Tainted: G D 4.5.0-rc1+ #14 [ 91.202005] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 91.202005] ffff88007fbacc00 ffff88007c663d10 ffffffff8132cd6c ffff88007c67a580 [ 91.202005] ffff88007c663d30 ffffffff81092fb3 ffff88007fbacc00 00000000cfbb42a0 [ 91.202005] ffff88007c663d60 ffffffff810930db 0000000000000286 ffff88007fbacc00 [ 91.202005] Call Trace: [ 91.202005] [] dump_stack+0x4e/0x82 [ 91.202005] [] spin_dump+0x73/0xc0 [ 91.202005] [] do_raw_spin_lock+0x9b/0x150 [ 91.202005] [] _raw_spin_lock_irqsave+0x1f/0x30 [ 91.202005] [] lock_timer_base.isra.23+0x4f/0x70 [ 91.202005] [] mod_timer+0x6a/0x200 [ 91.202005] [] ? preempt_schedule+0x30/0x30 [ 91.202005] [] rcu_torture_reader+0x2a7/0x2e0 [ 91.202005] [] ? rcu_torture_reader+0x2e0/0x2e0 [ 91.202005] [] ? rcutorture_trace_dump.part.7+0x20/0x20 [ 91.202005] [] kthread+0xd6/0xf0 [ 91.202005] [] ? kthread_worker_fn+0x180/0x180 [ 91.202005] [] ret_from_fork+0x3f/0x70 [ 91.202005] [] ? kthread_worker_fn+0x180/0x180 [ 91.202005] Sending NMI to all CPUs: [ 91.202005] NMI backtrace for cpu 0 [ 91.202005] CPU: 0 PID: 777 Comm: rcu_torture_rea Tainted: G D 4.5.0-rc1+ #14 [ 91.202005] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 91.202005] task: ffff88007c66be80 ti: ffff88007c660000 task.ti: ffff88007c660000 [ 91.202005] RIP: 0010:[] [] default_send_IPI_mask_sequence_phys+0x9d/0xd0 [ 91.202005] RSP: 0018:ffff88007c663c90 EFLAGS: 00000046 [ 91.202005] RAX: 0000000000000400 RBX: 000000000000a130 RCX: 0000000000000000 [ 91.202005] RDX: 0000000000000000 RSI: 0000000000000010 RDI: 0000000000000300 [ 91.202005] RBP: ffff88007c663cc8 R08: 0000000000000000 R09: 000000000000dec5 [ 91.202005] R10: ffff88007c663f58 R11: 000000000000059a R12: ffffffff81f31740 [ 91.202005] R13: 0000000000000400 R14: 0000000000000002 R15: 0000000000000000 [ 91.202005] FS: 0000000000000000(0000) GS:ffff88007fa00000(0000) knlGS:0000000000000000 [ 91.202005] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 91.202005] CR2: 000055f32cd75020 CR3: 0000000001e0f000 CR4: 00000000000006f0 [ 91.202005] Stack: [ 91.202005] 0000000000000086 000000007c663ca0 000000000000ff40 0000000000000001 [ 91.202005] ffffffff8103fd20 00000000cfbb42a0 ffff88007c663dd0 ffff88007c663cd8 [ 91.202005] ffffffff8103fd36 ffff88007c663d20 ffffffff81331299 ffffffff81008b50 [ 91.202005] Call Trace: [ 91.202005] [] ? irq_force_complete_move+0x20/0x20 [ 91.202005] [] nmi_raise_cpu_backtrace+0x16/0x20 [ 91.202005] [] nmi_trigger_all_cpu_backtrace+0x259/0x270 [ 91.202005] [] ? show_stack+0x20/0x50 [ 91.202005] [] arch_trigger_all_cpu_backtrace+0x14/0x20 [ 91.202005] [] do_raw_spin_lock+0xa5/0x150 [ 91.202005] [] _raw_spin_lock_irqsave+0x1f/0x30 [ 91.202005] [] lock_timer_base.isra.23+0x4f/0x70 [ 91.202005] [] mod_timer+0x6a/0x200 [ 91.202005] [] ? preempt_schedule+0x30/0x30 [ 91.202005] [] rcu_torture_reader+0x2a7/0x2e0 [ 91.202005] [] ? rcu_torture_reader+0x2e0/0x2e0 [ 91.202005] [] ? rcutorture_trace_dump.part.7+0x20/0x20 [ 91.202005] [] kthread+0xd6/0xf0 [ 91.202005] [] ? kthread_worker_fn+0x180/0x180 [ 91.202005] [] ret_from_fork+0x3f/0x70 [ 91.202005] [] ? kthread_worker_fn+0x180/0x180 [ 91.202005] Code: 90 8b 0c 25 00 c3 5f ff 80 e5 10 75 f2 89 d0 c1 e0 18 89 04 25 10 c3 5f ff 41 83 fe 02 44 89 e8 41 0f 45 c6 89 04 25 00 c3 5f ff 91 48 8b 05 32 09 ef 00 89 55 d4 ff 90 18 01 00 00 8b 55 d4 [ 91.202005] NMI backtrace for cpu 2 [ 91.202005] CPU: 2 PID: 787 Comm: rcu_torture_rea Tainted: G D 4.5.0-rc1+ #14 [ 91.202005] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 91.202005] task: ffff88007cb24b00 ti: ffff88007c680000 task.ti: ffff88007c680000 [ 91.202005] RIP: 0010:[] [] torture_random+0xe/0x50 [ 91.202005] RSP: 0018:ffff88007c683de8 EFLAGS: 00000a03 [ 91.202005] RAX: 5a933880b777f184 RBX: 0000000000000000 RCX: 0000000000000001 [ 91.202005] RDX: 0000000000000000 RSI: ffff88007fa527d8 RDI: ffff88007c683e20 [ 91.202005] RBP: ffff88007c683e00 R08: ffff88007c680000 R09: 0000000000000002 [ 91.202005] R10: 0000000000000000 R11: 0000000000000001 R12: ffff88007c683e20 [ 91.202005] R13: 00000037e5c0c22c R14: 000000000000046f R15: ffffffff820d5fe0 [ 91.202005] FS: 0000000000000000(0000) GS:ffff88007fa40000(0000) knlGS:0000000000000000 [ 91.202005] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 91.202005] CR2: 0000000000000000 CR3: 0000000001e0f000 CR4: 00000000000006e0 [ 91.202005] Stack: [ 91.202005] ffffffff810add5f 0000000000000000 0000000000000000 ffff88007c683ea8 [ 91.202005] ffffffff810ad458 0000000000000000 0000000081a0a240 eecf9ea3d6081d84 [ 91.202005] 0000000000001e73 ffff88007c5e7e30 ffff88007fa4cf60 00000000fffcd063 [ 91.202005] Call Trace: [ 91.202005] [] ? rcu_read_delay+0xf/0xb0 [ 91.202005] [] rcu_torture_reader+0x1a8/0x2e0 [ 91.202005] [] ? rcu_torture_reader+0x2e0/0x2e0 [ 91.202005] [] ? rcutorture_trace_dump.part.7+0x20/0x20 [ 91.202005] [] kthread+0xd6/0xf0 [ 91.202005] [] ? kthread_worker_fn+0x180/0x180 [ 91.202005] [] ret_from_fork+0x3f/0x70 [ 91.202005] [] ? kthread_worker_fn+0x180/0x180 [ 91.202005] Code: b2 fd 00 48 c7 c7 69 ef c9 81 e8 dd 16 00 00 48 8b 03 eb d5 66 0f 1f 84 00 00 00 00 00 48 83 6f 08 01 78 14 48 69 07 01 15 61 02 <48> 05 65 fc 8c 1c 48 89 07 c1 c0 10 c3 55 48 89 e5 53 48 89 fb [ 91.202005] NMI backtrace for cpu 6 [ 91.202005] CPU: 6 PID: 784 Comm: rcu_torture_rea Tainted: G D 4.5.0-rc1+ #14 [ 91.202005] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 91.202005] task: ffff88007cb22580 ti: ffff88007c624000 task.ti: ffff88007c624000 [ 91.202005] RIP: 0010:[] [] rcu_torture_reader+0xeb/0x2e0 [ 91.202005] RSP: 0018:ffff88007c627e10 EFLAGS: 00000207 [ 91.202005] RAX: 000000000000000a RBX: 0000000000000000 RCX: 00000000000493e0 [ 91.202005] RDX: 0000000000000000 RSI: ffffffff81d29759 RDI: ffffffff81cbdff8 [ 91.202005] RBP: ffff88007c627ea8 R08: ffff88007c624000 R09: ffff88007fad53f0 [ 91.202005] R10: ffff88007c627e30 R11: 000000000000005a R12: 0000000000000000 [ 91.202005] R13: 00000037e5c0cf9a R14: 000000000000046f R15: ffffffff820d5fe0 [ 91.202005] FS: 0000000000000000(0000) GS:ffff88007fac0000(0000) knlGS:0000000000000000 [ 91.202005] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 91.202005] CR2: 000055f32cd5f720 CR3: 0000000001e0f000 CR4: 00000000000006e0 [ 91.202005] Stack: [ 91.202005] 0000000000000000 0000000081a0a240 cbee22ce8ab059c0 0000000000001190 [ 91.202005] ffff88007cc53d40 ffff88007c50bdf0 00000000fffcd063 ffffffff810ad590 [ 91.202005] 0000000000000000 ffffffff00000006 00000000ffffffff 0000000000000000 [ 91.202005] Call Trace: [ 91.202005] [] ? rcu_torture_reader+0x2e0/0x2e0 [ 91.202005] [] ? rcutorture_trace_dump.part.7+0x20/0x20 [ 91.202005] [] kthread+0xd6/0xf0 [ 91.202005] [] ? kthread_worker_fn+0x180/0x180 [ 91.202005] [] ret_from_fork+0x3f/0x70 [ 91.202005] [] ? kthread_worker_fn+0x180/0x180 [ 91.202005] Code: ff 04 e5 40 cb 00 00 48 83 78 30 01 48 83 db ff e8 5b ad 29 00 48 83 fb 0a b8 0a 00 00 00 48 0f 47 d8 65 48 ff 04 dd e0 ca 00 00 01 00 00 00 e8 ab ab fc ff 65 8b 05 e4 d9 f5 7e 85 c0 0f 84 [ 91.202005] NMI backtrace for cpu 7 [ 91.202005] CPU: 7 PID: 783 Comm: rcu_torture_rea Tainted: G D 4.5.0-rc1+ #14 [ 91.202005] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 91.202005] task: ffff88007cb21900 ti: ffff88007c620000 task.ti: ffff88007c620000 [ 91.202005] RIP: 0010:[] [] delay_tsc+0x33/0xc0 [ 91.202005] RSP: 0018:ffff88007c623db0 EFLAGS: 00000286 [ 91.202005] RAX: 0000000080000000 RBX: 000000c2beb23b20 RCX: 0000000000000001 [ 91.202005] RDX: 0000000080000001 RSI: ffffffff81ca0d44 RDI: 00000000ffffffff [ 91.202005] RBP: ffff88007c623dd0 R08: ffff88007c620000 R09: ffff88007faf53f0 [ 91.202005] R10: 0000000000000000 R11: 0000000000000001 R12: 000000c2beb06098 [ 91.202005] R13: 0000000000351ec1 R14: 0000000000000007 R15: ffffffff820d5fe0 [ 91.202005] FS: 0000000000000000(0000) GS:ffff88007fae0000(0000) knlGS:0000000000000000 [ 91.202005] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 91.202005] CR2: 000055f32cd5f720 CR3: 0000000001e0f000 CR4: 00000000000006e0 [ 91.202005] Stack: [ 91.202005] 0000000000000028 ffff88007c623e20 00000037e496c4c4 000000000000046f [ 91.202005] ffff88007c623de0 ffffffff81339337 ffff88007c623e00 ffffffff810add86 [ 91.202005] 0000000000000000 0000000000000000 ffff88007c623ea8 ffffffff810ad458 [ 91.202005] Call Trace: [ 91.202005] [] __const_udelay+0x27/0x30 [ 91.202005] [] rcu_read_delay+0x36/0xb0 [ 91.202005] [] rcu_torture_reader+0x1a8/0x2e0 [ 91.202005] [] ? rcu_torture_reader+0x2e0/0x2e0 [ 91.202005] [] ? rcutorture_trace_dump.part.7+0x20/0x20 [ 91.202005] [] kthread+0xd6/0xf0 [ 91.202005] [] ? kthread_worker_fn+0x180/0x180 [ 91.202005] [] ret_from_fork+0x3f/0x70 [ 91.202005] [] ? kthread_worker_fn+0x180/0x180 [ 91.202005] Code: 41 54 53 49 89 fd bf 01 00 00 00 e8 68 ec d3 ff e8 73 ec 00 00 41 89 c6 0f ae e8 0f 31 48 c1 e2 20 48 09 c2 49 89 d4 eb 16 f3 90 01 00 00 00 e8 43 ec d3 ff e8 4e ec 00 00 44 39 f0 75 36 0f [ 91.202005] NMI backtrace for cpu 9 [ 91.202005] CPU: 9 PID: 780 Comm: rcu_torture_rea Tainted: G D 4.5.0-rc1+ #14 [ 91.202005] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 91.202005] task: ffff88007c66a580 ti: ffff88007c654000 task.ti: ffff88007c654000 [ 91.202005] RIP: 0010:[] [] rcu_read_delay+0x8e/0xb0 [ 91.202005] RSP: 0018:ffff88007c657df0 EFLAGS: 00000246 [ 91.202005] RAX: 0000000000003642 RBX: 0000000000000000 RCX: 00000000000493e0 [ 91.202005] RDX: 000000000003761e RSI: ffff88007fb327d8 RDI: ffff88007c657e20 [ 91.202005] RBP: ffff88007c657e00 R08: ffff88007c654000 R09: ffff88007fb353f0 [ 91.202005] R10: ffff88007c657e30 R11: 0000000000000078 R12: ffff88007c657e20 [ 91.202005] R13: 00000037e5c0ea8d R14: 000000000000046f R15: ffffffff820d5fe0 [ 91.202005] FS: 0000000000000000(0000) GS:ffff88007fb20000(0000) knlGS:0000000000000000 [ 91.202005] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 91.202005] CR2: 000055f32cd5f720 CR3: 000000007b0a0000 CR4: 00000000000006e0 [ 91.202005] Stack: [ 91.202005] 0000000000000000 0000000000000000 ffff88007c657ea8 ffffffff810ad458 [ 91.202005] 0000000000000000 0000000081a0a240 27e1079dd5def862 0000000000000363 [ 91.202005] 0000000000000000 ffff88007fb2cf60 00000000fffcd063 ffffffff810ad590 [ 91.202005] Call Trace: [ 91.202005] [] rcu_torture_reader+0x1a8/0x2e0 [ 91.202005] [] ? rcu_torture_reader+0x2e0/0x2e0 [ 91.202005] [] ? rcutorture_trace_dump.part.7+0x20/0x20 [ 91.202005] [] kthread+0xd6/0xf0 [ 91.202005] [] ? kthread_worker_fn+0x180/0x180 [ 91.202005] [] ret_from_fork+0x3f/0x70 [ 91.202005] [] ? kthread_worker_fn+0x180/0x180 [ 91.202005] Code: 05 d8 cf f5 7e a9 ff ff ff 7f 74 05 5b 41 5c 5d c3 4c 89 e7 e8 34 83 07 00 69 0d 9e 94 02 01 20 4e 00 00 31 d2 48 63 c9 48 f7 f1 <48> 85 d2 75 dc e8 28 1b 80 00 5b 41 5c 5d c3 bf 78 1b 0d 00 e8 [ 91.202005] NMI backtrace for cpu 10 [ 91.202005] CPU: 10 PID: 0 Comm: swapper/10 Tainted: G D 4.5.0-rc1+ #14 [ 91.202005] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 91.202005] task: ffff88007cc98c80 ti: ffff88007cca4000 task.ti: ffff88007cca4000 [ 91.202005] RIP: 0010:[] [] queued_spin_lock_slowpath+0x127/0x1a0 [ 91.202005] RSP: 0018:ffff88007fb43d90 EFLAGS: 00000002 [ 91.202005] RAX: 0000000000000000 RBX: ffff88007fb6cc00 RCX: ffff88007fb55e80 [ 91.202005] RDX: 00000000002c0101 RSI: ffffffff81ca0d44 RDI: 00000000002c0000 [ 91.202005] RBP: ffff88007fb43da8 R08: 0000000000000000 R09: 0000000000000583 [ 91.202005] R10: ffff88007cca7f58 R11: 0000000000000583 R12: 0000000000000000 [ 91.202005] R13: ffff88007fb55e80 R14: 00000000cfbb42a0 R15: 0000000000000000 [ 91.202005] FS: 0000000000000000(0000) GS:ffff88007fb40000(0000) knlGS:0000000000000000 [ 91.202005] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 91.202005] CR2: 000055f32cd5f720 CR3: 0000000001e0f000 CR4: 00000000000006e0 [ 91.202005] Stack: [ 91.202005] ffff88007fb6cc00 00000000cfbb42a0 0000000000000001 ffff88007fb43dd8 [ 91.202005] ffffffff81093185 ffff88007fb6cc00 ffffffff820d8c80 ffff88007fb6cc00 [ 91.202005] 0000000000000000 ffff88007fb43df0 ffffffff818b3fda 000000000000000b [ 91.202005] Call Trace: [ 91.202005] d [] do_raw_spin_lock+0x145/0x150 [ 91.202005] [] _raw_spin_lock+0x1a/0x20 [ 91.202005] [] add_timer_on+0x76/0x150 [ 91.202005] [] clocksource_watchdog+0x217/0x2f0 [ 91.202005] [] ? clocksource_unregister+0x50/0x50 [ 91.202005] [] call_timer_fn+0x30/0x120 [ 91.202005] [] ? clocksource_unregister+0x50/0x50 [ 91.202005] [] run_timer_softirq+0x20b/0x2b0 [ 91.202005] [] __do_softirq+0xd3/0x280 [ 91.202005] [] irq_exit+0x42/0x50 [ 91.202005] [] smp_apic_timer_interrupt+0x3d/0x50 [ 91.202005] [] apic_timer_interrupt+0x7f/0x90 [ 91.202005] d [] ? default_idle+0x13/0xd0 [ 91.202005] [] arch_cpu_idle+0xa/0x10 [ 91.202005] [] default_idle_call+0x25/0x30 [ 91.202005] [] cpu_startup_entry+0x287/0x2e0 [ 91.202005] [] start_secondary+0xf9/0x100 [ 91.202005] Code: 48 03 14 c5 20 f5 f2 81 48 89 0a 8b 41 08 85 c0 75 09 f3 90 8b 41 08 85 c0 74 f7 4c 8b 01 4d 85 c0 74 08 41 0f 18 08 eb 02 f3 90 <8b> 13 66 85 d2 75 f7 be 01 00 00 00 eb 10 89 d0 f0 0f b1 33 39 [ 91.202005] NMI backtrace for cpu 11 [ 91.202005] CPU: 11 PID: 794 Comm: torture_onoff Tainted: G D 4.5.0-rc1+ #14 [ 91.202005] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 91.202005] task: ffff88007c67a580 ti: ffff88007c63c000 task.ti: ffff88007c63c000 [ 91.202005] RIP: 0010:[] [] queued_spin_lock_slowpath+0x16f/0x1a0 [ 91.202005] RSP: 0000:ffff88007fb63e58 EFLAGS: 00000002 [ 91.202005] RAX: 00000000002c0101 RBX: ffff88007fb6cc00 RCX: 0000000000000001 [ 91.202005] RDX: 0000000000000101 RSI: 0000000000000001 RDI: 0000000000000101 [ 91.202005] RBP: ffff88007fb63e70 R08: 00000000000006e7 R09: 0000000000000418 [ 91.202005] R10: ffff88007c63ff58 R11: 0000000000000418 R12: 00000000cfbb42a0 [ 91.202005] R13: 0000000000000001 R14: 00000000cfbb42a0 R15: 0000000000000000 [ 91.202005] FS: 0000000000000000(0000) GS:ffff88007fb60000(0000) knlGS:0000000000000000 [ 91.202005] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 91.202005] CR2: 0000000000000000 CR3: 0000000001e0f000 CR4: 00000000000006e0 [ 91.202005] Stack: [ 91.202005] ffff88007fb6cc00 00000000cfbb42a0 0000000000000001 ffff88007fb63ea0 [ 91.202005] ffffffff81093185 ffff88007fb6cc00 ffffffff81e080c8 0000000000000001 [ 91.202005] 0000000000000001 ffff88007fb63eb8 ffffffff818b3ffb ffff88007fb6cc00 [ 91.202005] Call Trace: [ 91.202005] d [] do_raw_spin_lock+0x145/0x150 [ 91.202005] [] _raw_spin_lock_irq+0x1b/0x20 [ 91.202005] [] run_timer_softirq+0x40/0x2b0 [ 91.202005] [] ? clockevents_program_event+0x7d/0x120 [ 91.202005] [] __do_softirq+0xd3/0x280 [ 91.202005] [] irq_exit+0x42/0x50 [ 91.202005] [] smp_apic_timer_interrupt+0x3d/0x50 [ 91.202005] [] apic_timer_interrupt+0x7f/0x90 [ 91.202005] d [] ? _raw_spin_unlock_irq+0xf/0x30 [ 91.202005] [] ? _raw_spin_unlock_irq+0x9/0x30 [ 91.202005] [] acct_collect+0x166/0x1a0 [ 91.202005] [] do_exit+0x4f9/0xc00 [ 91.202005] [] oops_end+0x84/0xb0 [ 91.202005] [] no_context+0x102/0x330 [ 91.202005] [] __bad_area_nosemaphore+0x75/0x1f0 [ 91.202005] [] bad_area_nosemaphore+0xe/0x10 [ 91.202005] [] __do_page_fault+0x85/0x450 [ 91.202005] [] do_page_fault+0xc/0x10 [ 91.202005] [] page_fault+0x22/0x30 [ 91.202005] [] ? migrate_timer_list+0x32/0xc0 [ 91.202005] [] timer_cpu_notify+0xe4/0x160 [ 91.202005] [] notifier_call_chain+0x45/0x70 [ 91.202005] [] __raw_notifier_call_chain+0x9/0x10 [ 91.202005] [] cpu_notify_nofail+0x1e/0x30 [ 91.202005] [] _cpu_down+0x212/0x350 [ 91.202005] [] ? __call_rcu.constprop.74+0x380/0x380 [ 91.202005] [] ? call_rcu_bh+0x20/0x20 [ 91.202005] [] ? __rcu_read_unlock+0x50/0x50 [ 91.202005] [] ? __rcu_read_unlock+0x50/0x50 [ 91.202005] [] cpu_down+0x2f/0x50 [ 91.202005] [] torture_onoff+0x115/0x380 [ 91.202005] [] ? torture_kthread_stopping+0x70/0x70 [ 91.202005] [] kthread+0xd6/0xf0 [ 91.202005] [] ? kthread_worker_fn+0x180/0x180 [ 91.202005] [] ret_from_fork+0x3f/0x70 [ 91.202005] [] ? kthread_worker_fn+0x180/0x180 [ 91.202005] Code: c2 89 d0 66 31 c0 39 c7 74 e7 4d 85 c0 c6 03 01 74 30 41 c7 40 08 01 00 00 00 e9 4e ff ff ff 83 fa 01 75 07 e9 4b ff ff ff f3 90 <8b> 03 84 c0 75 f8 b8 01 00 00 00 66 89 03 5b 41 5c 41 5d 5d c3 [ 91.202005] NMI backtrace for cpu 12 [ 91.202005] CPU: 12 PID: 790 Comm: rcu_torture_rea Tainted: G D 4.5.0-rc1+ #14 [ 91.202005] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 91.202005] task: ffff88007cb27080 ti: ffff88007c674000 task.ti: ffff88007c674000 [ 91.202005] RIP: 0010:[] [] delay_tsc+0x23/0xc0 [ 91.202005] RSP: 0000:ffff88007c677d00 EFLAGS: 00000002 [ 91.202005] RAX: 000000000000000c RBX: ffff88007fb6cc00 RCX: 0000000000000002 [ 91.202005] RDX: 0000000000000000 RSI: ffffffff81ca0d44 RDI: ffffffff81cbdfe7 [ 91.202005] RBP: ffff88007c677d20 R08: ffff88007c674000 R09: ffff88007fb6cc00 [ 91.202005] R10: ffff88007c677e30 R11: 000000000000002d R12: 00000000c7d753c2 [ 91.202005] R13: 0000000000000001 R14: 000000000000000c R15: ffff88007c677dd0 [ 91.202005] FS: 0000000000000000(0000) GS:ffff88007fb80000(0000) knlGS:0000000000000000 [ 91.202005] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 91.202005] CR2: 000055f32cd5f720 CR3: 0000000001e0f000 CR4: 00000000000006e0 [ 91.202005] Stack: [ 91.202005] ffff88007fb6cc00 00000000c7d753c2 0000000000000001 00000000cfbb42a0 [ 91.202005] ffff88007c677d30 ffffffff8133930a ffff88007c677d60 ffffffff810930c7 [ 91.202005] 0000000000000286 ffff88007fb6cc00 ffff88007fb6cc00 000000000000cc00 [ 91.202005] Call Trace: [ 91.202005] [] __delay+0xa/0x10 [ 91.202005] [] do_raw_spin_lock+0x87/0x150 [ 91.202005] [] _raw_spin_lock_irqsave+0x1f/0x30 [ 91.202005] [] lock_timer_base.isra.23+0x4f/0x70 [ 91.202005] [] mod_timer+0x6a/0x200 [ 91.202005] [] ? stutter_wait+0x49/0xc0 [ 91.202005] [] rcu_torture_reader+0x2a7/0x2e0 [ 91.202005] [] ? rcu_torture_reader+0x2e0/0x2e0 [ 91.202005] [] ? rcutorture_trace_dump.part.7+0x20/0x20 [ 91.202005] [] kthread+0xd6/0xf0 [ 91.202005] [] ? kthread_worker_fn+0x180/0x180 [ 91.202005] [] ret_from_fork+0x3f/0x70 [ 91.202005] [] ? kthread_worker_fn+0x180/0x180 [ 91.202005] Code: 5d 41 5e 41 5f 5d c3 90 55 48 89 e5 41 56 41 55 41 54 53 49 89 fd bf 01 00 00 00 e8 68 ec d3 ff e8 73 ec 00 00 41 89 c6 0f ae e8 <0f> 31 48 c1 e2 20 48 09 c2 49 89 d4 eb 16 f3 90 bf 01 00 00 00 [ 91.202005] NMI backtrace for cpu 14 [ 91.202005] CPU: 14 PID: 785 Comm: rcu_torture_rea Tainted: G D 4.5.0-rc1+ #14 [ 91.202005] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 91.202005] task: ffff88007cb23200 ti: ffff88007cbb8000 task.ti: ffff88007cbb8000 [ 91.202005] RIP: 0010:[] [] preempt_count_add+0x70/0xc0 [ 91.202005] RSP: 0018:ffff88007cbbbd98 EFLAGS: 00000246 [ 91.202005] RAX: 0000000000000001 RBX: 0000000000000001 RCX: 0000000000000001 [ 91.202005] RDX: 0000000000000000 RSI: ffffffff81ca0d44 RDI: 0000000000000001 [ 91.202005] RBP: ffff88007cbbbda0 R08: ffff88007cbb8000 R09: 0000000000000002 [ 91.202005] R10: 0000000000000000 R11: 0000000000000001 R12: 000000c2beb198e2 [ 91.202005] R13: 00000000000aa2cd R14: 000000000000000e R15: ffffffff820d5fe0 [ 91.202005] FS: 0000000000000000(0000) GS:ffff88007fbc0000(0000) knlGS:0000000000000000 [ 91.202005] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 91.202005] CR2: 000055f32cd5f720 CR3: 0000000001e0f000 CR4: 00000000000006e0 [ 91.202005] Stack: [ 91.202005] 000000c2beb32182 ffff88007cbbbdd0 ffffffff8133946d 0000000000000000 [ 91.202005] ffff88007cbbbe20 00000037e5c0ae24 000000000000046f ffff88007cbbbde0 [ 91.202005] ffffffff81339337 ffff88007cbbbe00 ffffffff810addf7 0000000000000000 [ 91.202005] Call Trace: [ 91.202005] [] delay_tsc+0x3d/0xc0 [ 91.202005] [] __const_udelay+0x27/0x30 [ 91.202005] [] rcu_read_delay+0xa7/0xb0 [ 91.202005] [] rcu_torture_reader+0x1a8/0x2e0 [ 91.202005] [] ? rcu_torture_reader+0x2e0/0x2e0 [ 91.202005] [] ? rcutorture_trace_dump.part.7+0x20/0x20 [ 91.202005] [] kthread+0xd6/0xf0 [ 91.202005] [] ? kthread_worker_fn+0x180/0x180 [ 91.202005] [] ret_from_fork+0x3f/0x70 [ 91.202005] [] ? kthread_worker_fn+0x180/0x180 [ 91.202005] Code: 8b 05 a5 07 0a 01 85 c0 75 da 48 c7 c1 f0 57 c9 81 48 c7 c2 1e 0a c9 81 be e1 0b 00 00 48 c7 c7 fb dd c9 81 e8 52 f0 fd ff eb b9 <48> 8b 45 00 48 8b 58 08 48 89 df e8 80 99 01 00 85 c0 75 13 65 [ 91.202005] NMI backtrace for cpu 15 [ 91.202005] CPU: 15 PID: 778 Comm: rcu_torture_rea Tainted: G D 4.5.0-rc1+ #14 [ 91.202005] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 91.202005] task: ffff88007c66d780 ti: ffff88007c664000 task.ti: ffff88007c664000 [ 91.202005] RIP: 0010:[] [] rcu_read_delay+0x22/0xb0 [ 91.202005] RSP: 0018:ffff88007c667df0 EFLAGS: 00000246 [ 91.202005] RAX: 0000000000000036 RBX: 0000000000000000 RCX: 000000000016e360 [ 91.202005] RDX: 0000000000103495 RSI: ffff88007fbf27d8 RDI: ffff88007c667e20 [ 91.202005] RBP: ffff88007c667e00 R08: ffff88007c664000 R09: ffff88007fbf53f0 [ 91.202005] R10: ffff88007c667e30 R11: 0000000000000001 R12: ffff88007c667e20 [ 91.202005] R13: 00000037e5c12d14 R14: 000000000000046f R15: ffffffff820d5fe0 [ 91.202005] FS: 0000000000000000(0000) GS:ffff88007fbe0000(0000) knlGS:0000000000000000 [ 91.202005] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 91.202005] CR2: 000055f32cd5f720 CR3: 0000000001e0f000 CR4: 00000000000006e0 [ 91.202005] Stack: [ 91.202005] 0000000000000000 0000000000000000 ffff88007c667ea8 ffffffff810ad458 [ 91.202005] 0000000000000000 0000000081a0a240 c0b2cf292ad504e4 00000000000018bf [ 91.202005] ffff88007c5e3de0 ffff88007fbecf60 00000000fffcd063 ffffffff810ad590 [ 91.202005] Call Trace: [ 91.202005] [] rcu_torture_reader+0x1a8/0x2e0 [ 91.202005] [] ? rcu_torture_reader+0x2e0/0x2e0 [ 91.202005] [] ? rcutorture_trace_dump.part.7+0x20/0x20 [ 91.202005] [] kthread+0xd6/0xf0 [ 91.202005] [] ? kthread_worker_fn+0x180/0x180 [ 91.202005] [] ret_from_fork+0x3f/0x70 [ 91.202005] [] ? kthread_worker_fn+0x180/0x180 [ 91.202005] Code: ff ff 5d c3 0f 1f 44 00 00 55 48 89 e5 41 54 53 49 89 fc e8 a1 83 07 00 48 63 0d 0e 95 02 01 31 d2 48 69 c9 a0 86 01 00 48 f7 f1 <48> 85 d2 75 15 bb 32 00 00 00 bf 58 89 41 00 e8 8a b5 28 00 48 [ 91.202004] BUG: spinlock lockup suspected on CPU#12, rcu_torture_rea/790 [ 91.202004] lock: 0xffff88007fb6cc00, .magic: dead4ead, .owner: torture_onoff/794, .owner_cpu: 11 [ 91.202004] CPU: 12 PID: 790 Comm: rcu_torture_rea Tainted: G D 4.5.0-rc1+ #14 [ 91.202004] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 91.202004] ffff88007fb6cc00 ffff88007c677d10 ffffffff8132cd6c ffff88007c67a580 [ 91.202004] ffff88007c677d30 ffffffff81092fb3 ffff88007fb6cc00 00000000cfbb42a0 [ 91.202004] ffff88007c677d60 ffffffff810930db 0000000000000286 ffff88007fb6cc00 [ 91.202004] Call Trace: [ 91.202004] [] dump_stack+0x4e/0x82 [ 91.202004] [] spin_dump+0x73/0xc0 [ 91.202004] [] do_raw_spin_lock+0x9b/0x150 [ 91.202004] [] _raw_spin_lock_irqsave+0x1f/0x30 [ 91.202004] [] lock_timer_base.isra.23+0x4f/0x70 [ 91.202004] [] mod_timer+0x6a/0x200 [ 91.202004] [] ? stutter_wait+0x49/0xc0 [ 91.202004] [] rcu_torture_reader+0x2a7/0x2e0 [ 91.202004] [] ? rcu_torture_reader+0x2e0/0x2e0 [ 91.202004] [] ? rcutorture_trace_dump.part.7+0x20/0x20 [ 91.202004] [] kthread+0xd6/0xf0 [ 91.202004] [] ? kthread_worker_fn+0x180/0x180 [ 91.202004] [] ret_from_fork+0x3f/0x70 [ 91.202004] [] ? kthread_worker_fn+0x180/0x180 [ 91.202004] Sending NMI to all CPUs: [ 91.202004] NMI backtrace for cpu 0 [ 91.202004] CPU: 0 PID: 777 Comm: rcu_torture_rea Tainted: G D 4.5.0-rc1+ #14 [ 91.202004] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 91.202004] task: ffff88007c66be80 ti: ffff88007c660000 task.ti: ffff88007c660000 [ 91.202004] RIP: 0010:[] [] queued_spin_lock_slowpath+0x16f/0x1a0 [ 91.202004] RSP: 0018:ffff88007c663d18 EFLAGS: 00000002 [ 91.202004] RAX: 0000000000000101 RBX: ffff88007fbacc00 RCX: 0000000000000001 [ 91.202004] RDX: 0000000000000101 RSI: 0000000000000001 RDI: 0000000000000101 [ 91.202004] RBP: ffff88007c663d30 R08: 00000000000006e7 R09: 00000000000006e4 [ 91.202004] R10: ffff88007c663f58 R11: 00000000000006e4 R12: 00000000cfbb42a0 [ 91.202004] R13: 0000000000000001 R14: 00000000cfbb42a0 R15: ffff88007c663dd0 [ 91.202004] FS: 0000000000000000(0000) GS:ffff88007fa00000(0000) knlGS:0000000000000000 [ 91.202004] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 91.202004] CR2: 000055f32cd75020 CR3: 0000000001e0f000 CR4: 00000000000006f0 [ 91.202004] Stack: [ 91.202004] ffff88007fbacc00 00000000cfbb42a0 0000000000000001 ffff88007c663d60 [ 91.202004] ffffffff81093185 0000000000000286 ffff88007fbacc00 ffff88007fbacc00 [ 91.202004] 000000000000cc00 ffff88007c663d80 ffffffff818b401f 000000000000000d [ 91.202004] Call Trace: [ 91.202004] [] do_raw_spin_lock+0x145/0x150 [ 91.202004] [] _raw_spin_lock_irqsave+0x1f/0x30 [ 91.202004] [] lock_timer_base.isra.23+0x4f/0x70 [ 91.202004] [] mod_timer+0x6a/0x200 [ 91.202004] [] ? preempt_schedule+0x30/0x30 [ 91.202004] [] rcu_torture_reader+0x2a7/0x2e0 [ 91.202004] [] ? rcu_torture_reader+0x2e0/0x2e0 [ 91.202004] [] ? rcutorture_trace_dump.part.7+0x20/0x20 [ 91.202004] [] kthread+0xd6/0xf0 [ 91.202004] [] ? kthread_worker_fn+0x180/0x180 [ 91.202004] [] ret_from_fork+0x3f/0x70 [ 91.202004] [] ? kthread_worker_fn+0x180/0x180 [ 91.202004] Code: c2 89 d0 66 31 c0 39 c7 74 e7 4d 85 c0 c6 03 01 74 30 41 c7 40 08 01 00 00 00 e9 4e ff ff ff 83 fa 01 75 07 e9 4b ff ff ff f3 90 <8b> 03 84 c0 75 f8 b8 01 00 00 00 66 89 03 5b 41 5c 41 5d 5d c3 [ 91.202004] NMI backtrace for cpu 2 [ 91.202004] CPU: 2 PID: 787 Comm: rcu_torture_rea Tainted: G D 4.5.0-rc1+ #14 [ 91.202004] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 91.202004] task: ffff88007cb24b00 ti: ffff88007c680000 task.ti: ffff88007c680000 [ 91.202004] RIP: 0010:[] [] check_preemption_disabled+0x8/0xe0 [ 91.202004] RSP: 0018:ffff88007c683d90 EFLAGS: 00000246 [ 91.202004] RAX: 0000000080000001 RBX: 000000c7ab3fe108 RCX: 0000000000000001 [ 91.202004] RDX: 0000000000000000 RSI: ffffffff81ca0d44 RDI: ffffffff81cbdfe7 [ 91.202004] RBP: ffff88007c683da0 R08: ffff88007c680000 R09: 0000000000000002 [ 91.202004] R10: 0000000000000000 R11: 0000000000000001 R12: 000000c7ab3f6534 [ 91.202004] R13: 00000000000a9fb8 R14: 0000000000000002 R15: ffffffff820d5fe0 [ 91.202004] FS: 0000000000000000(0000) GS:ffff88007fa40000(0000) knlGS:0000000000000000 [ 91.202004] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 91.202004] CR2: 0000000000000000 CR3: 0000000001e0f000 CR4: 00000000000006e0 [ 91.202004] Stack: [ 91.202004] ffff88007c683da0 ffffffff813480d7 ffff88007c683dd0 ffffffff81339472 [ 91.202004] 0000000000000000 ffff88007c683e20 00000039515b4c4d 000000000000046f [ 91.202004] ffff88007c683de0 ffffffff81339337 ffff88007c683e00 ffffffff810addf7 [ 91.202004] Call Trace: [ 91.202004] [] ? debug_smp_processor_id+0x17/0x20 [ 91.202004] [] delay_tsc+0x42/0xc0 [ 91.202004] [] __const_udelay+0x27/0x30 [ 91.202004] [] rcu_read_delay+0xa7/0xb0 [ 91.202004] [] rcu_torture_reader+0x1a8/0x2e0 [ 91.202004] [] ? rcu_torture_reader+0x2e0/0x2e0 [ 91.202004] [] ? rcutorture_trace_dump.part.7+0x20/0x20 [ 91.202004] [] kthread+0xd6/0xf0 [ 91.202004] [] ? kthread_worker_fn+0x180/0x180 [ 91.202004] [] ret_from_fork+0x3f/0x70 [ 91.202004] [] ? kthread_worker_fn+0x180/0x180 [ 91.202004] Code: 40 08 00 00 00 00 e9 1b ff ff ff 4d 89 e7 4c 8b 6d c8 49 83 cf 01 e9 0b ff ff ff 0f 1f 84 00 00 00 00 00 55 65 8b 05 a8 2d cc 7e <48> 89 e5 41 56 41 55 41 54 53 65 8b 1d 27 21 cc 7e a9 ff ff ff [ 91.202004] NMI backtrace for cpu 6 [ 91.202004] CPU: 6 PID: 784 Comm: rcu_torture_rea Tainted: G D 4.5.0-rc1+ #14 [ 91.202004] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 91.202004] task: ffff88007cb22580 ti: ffff88007c624000 task.ti: ffff88007c624000 [ 91.202004] RIP: 0010:[] [] rcu_read_delay+0x5c/0xb0 [ 91.202004] RSP: 0018:ffff88007c627df0 EFLAGS: 00000202 [ 91.202004] RAX: 00000000000a4fd6 RBX: 0000000000000000 RCX: 0000000000001770 [ 91.202004] RDX: 0000000000000e75 RSI: ffff88007fad27d8 RDI: ffff88007c627e20 [ 91.202004] RBP: ffff88007c627e00 R08: ffff88007c624000 R09: ffff88007fad53f0 [ 91.202004] R10: ffff88007c627e30 R11: 000000000000005a R12: ffff88007c627e20 [ 91.202004] R13: 00000039515b8490 R14: 000000000000046f R15: ffffffff820d5fe0 [ 91.202004] FS: 0000000000000000(0000) GS:ffff88007fac0000(0000) knlGS:0000000000000000 [ 91.202004] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 91.202004] CR2: 000055f32cd5f720 CR3: 0000000001e0f000 CR4: 00000000000006e0 [ 91.202004] Stack: [ 91.202004] 0000000000000000 0000000000000000 ffff88007c627ea8 ffffffff810ad458 [ 91.202004] 0000000000000000 0000000081a0a240 4f1dab463615f1af 0000000000000b21 [ 91.202004] ffff88007cc53d40 ffff88007c50bdf0 00000000fffcd063 ffffffff810ad590 [ 91.202004] Call Trace: [ 91.202004] [] rcu_torture_reader+0x1a8/0x2e0 [ 91.202004] [] ? rcu_torture_reader+0x2e0/0x2e0 [ 91.202004] [] ? rcutorture_trace_dump.part.7+0x20/0x20 [ 91.202004] [] kthread+0xd6/0xf0 [ 91.202004] [] ? kthread_worker_fn+0x180/0x180 [ 91.202004] [] ret_from_fork+0x3f/0x70 [ 91.202004] [] ? kthread_worker_fn+0x180/0x180 [ 91.202004] Code: e8 8a b5 28 00 48 83 eb 01 75 f0 4c 89 e7 e8 6c 83 07 00 48 63 15 d9 94 02 01 48 8d 14 92 48 8d 0c 92 31 d2 48 c1 e1 04 48 f7 f1 <48> 85 d2 74 3c 65 8b 05 d8 cf f5 7e a9 ff ff ff 7f 74 05 5b 41 [ 91.202004] NMI backtrace for cpu 7 [ 91.202004] CPU: 7 PID: 783 Comm: rcu_torture_rea Tainted: G D 4.5.0-rc1+ #14 [ 91.202004] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 91.202004] task: ffff88007cb21900 ti: ffff88007c620000 task.ti: ffff88007c620000 [ 91.202004] RIP: 0010:[] [] delay_tsc+0x4c/0xc0 [ 91.202004] RSP: 0018:ffff88007c623db0 EFLAGS: 00000246 [ 91.202004] RAX: 00000000ab406ce4 RBX: 000000c7ab406c44 RCX: 0000000000000001 [ 91.202004] RDX: 00000000000000c7 RSI: ffffffff81ca0d44 RDI: ffffffff81cbdfe7 [ 91.202004] RBP: ffff88007c623dd0 R08: ffff88007c620000 R09: 0000000000000002 [ 91.202004] R10: 0000000000000000 R11: 0000000000000001 R12: 000000c7ab2cda1c [ 91.202004] R13: 0000000000351ec1 R14: 0000000000000007 R15: ffffffff820d5fe0 [ 91.202004] FS: 0000000000000000(0000) GS:ffff88007fae0000(0000) knlGS:0000000000000000 [ 91.202004] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 91.202004] CR2: 000055f32cd5f720 CR3: 0000000001e0f000 CR4: 00000000000006e0 [ 91.202004] Stack: [ 91.202004] 0000000000000015 ffff88007c623e20 000000394df2e808 000000000000046f [ 91.202004] ffff88007c623de0 ffffffff81339337 ffff88007c623e00 ffffffff810add86 [ 91.202004] 0000000000000000 0000000000000000 ffff88007c623ea8 ffffffff810ad458 [ 91.202004] Call Trace: [ 91.202004] [] __const_udelay+0x27/0x30 [ 91.202004] [] rcu_read_delay+0x36/0xb0 [ 91.202004] [] rcu_torture_reader+0x1a8/0x2e0 [ 91.202004] [] ? rcu_torture_reader+0x2e0/0x2e0 [ 91.202004] [] ? rcutorture_trace_dump.part.7+0x20/0x20 [ 91.202004] [] kthread+0xd6/0xf0 [ 91.202004] [] ? kthread_worker_fn+0x180/0x180 [ 91.202004] [] ret_from_fork+0x3f/0x70 [ 91.202004] [] ? kthread_worker_fn+0x180/0x180 [ 91.202004] Code: ae e8 0f 31 48 c1 e2 20 48 09 c2 49 89 d4 eb 16 f3 90 bf 01 00 00 00 e8 43 ec d3 ff e8 4e ec 00 00 44 39 f0 75 36 0f ae e8 0f 31 <48> c1 e2 20 48 89 d3 48 09 c3 48 89 d8 4c 29 e0 49 39 c5 76 24 [ 91.202004] NMI backtrace for cpu 9 [ 91.202004] CPU: 9 PID: 780 Comm: rcu_torture_rea Tainted: G D 4.5.0-rc1+ #14 [ 91.202004] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 91.202004] task: ffff88007c66a580 ti: ffff88007c654000 task.ti: ffff88007c654000 [ 91.202004] RIP: 0010:[] [] __rcu_read_unlock+0x2f/0x50 [ 91.202004] RSP: 0018:ffff88007c657de8 EFLAGS: 00000246 [ 91.202004] RAX: 0000000000000001 RBX: ffff88007c66a580 RCX: 0000000000000001 [ 91.202004] RDX: 0000000080000001 RSI: ffffffff81d29759 RDI: 0000000000000000 [ 91.202004] RBP: ffff88007c657df0 R08: ffff88007c654000 R09: ffff88007fb353f0 [ 91.202004] R10: ffff88007c657e30 R11: 0000000000000078 R12: 0000000000000000 [ 91.202004] R13: 00000039515bac4a R14: 000000000000046f R15: ffffffff820d5fe0 [ 91.202004] FS: 0000000000000000(0000) GS:ffff88007fb20000(0000) knlGS:0000000000000000 [ 91.202004] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 91.202004] CR2: 000055f32cd5f720 CR3: 000000007b0a0000 CR4: 00000000000006e0 [ 91.202004] Stack: [ 91.202004] 0000000000000000 ffff88007c657e00 ffffffff810accc9 ffff88007c657ea8 [ 91.202004] ffffffff810ad3c2 0000000000000000 0000000081a0a240 142e046850c04feb [ 91.202004] 0000000000001bad 0000000000000000 ffff88007fb2cf60 00000000fffcd063 [ 91.202004] Call Trace: [ 91.202004] [] rcu_torture_read_unlock+0x9/0x10 [ 91.202004] [] rcu_torture_reader+0x112/0x2e0 [ 91.202004] [] ? rcu_torture_reader+0x2e0/0x2e0 [ 91.202004] [] ? rcutorture_trace_dump.part.7+0x20/0x20 [ 91.202004] [] kthread+0xd6/0xf0 [ 91.202004] [] ? kthread_worker_fn+0x180/0x180 [ 91.202004] [] ret_from_fork+0x3f/0x70 [ 91.202004] [] ? kthread_worker_fn+0x180/0x180 [ 91.202004] Code: 53 65 48 8b 1c 25 00 ae 00 00 8b 83 50 03 00 00 83 f8 01 74 0c 83 e8 01 89 83 50 03 00 00 5b 5d c3 c7 83 50 03 00 00 00 00 00 80 <8b> 83 54 03 00 00 85 c0 75 0d c7 83 50 03 00 00 00 00 00 00 5b [ 91.202004] NMI backtrace for cpu 10 [ 91.202004] CPU: 10 PID: 0 Comm: swapper/10 Tainted: G D 4.5.0-rc1+ #14 [ 91.202004] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 91.202004] task: ffff88007cc98c80 ti: ffff88007cca4000 task.ti: ffff88007cca4000 [ 91.202004] RIP: 0010:[] [] queued_spin_lock_slowpath+0x127/0x1a0 [ 91.202004] RSP: 0018:ffff88007fb43d90 EFLAGS: 00000002 [ 91.202004] RAX: 0000000000000000 RBX: ffff88007fb6cc00 RCX: ffff88007fb55e80 [ 91.202004] RDX: 00000000002c0101 RSI: ffffffff81ca0d44 RDI: 00000000002c0000 [ 91.202004] RBP: ffff88007fb43da8 R08: 0000000000000000 R09: 0000000000000583 [ 91.202004] R10: ffff88007cca7f58 R11: 0000000000000583 R12: 0000000000000000 [ 91.202004] R13: ffff88007fb55e80 R14: 00000000cfbb42a0 R15: 0000000000000000 [ 91.202004] FS: 0000000000000000(0000) GS:ffff88007fb40000(0000) knlGS:0000000000000000 [ 91.202004] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 91.202004] CR2: 000055f32cd5f720 CR3: 0000000001e0f000 CR4: 00000000000006e0 [ 91.202004] Stack: [ 91.202004] ffff88007fb6cc00 00000000cfbb42a0 0000000000000001 ffff88007fb43dd8 [ 91.202004] ffffffff81093185 ffff88007fb6cc00 ffffffff820d8c80 ffff88007fb6cc00 [ 91.202004] 0000000000000000 ffff88007fb43df0 ffffffff818b3fda 000000000000000b [ 91.202004] Call Trace: [ 91.202004] d [] do_raw_spin_lock+0x145/0x150 [ 91.202004] [] _raw_spin_lock+0x1a/0x20 [ 91.202004] [] add_timer_on+0x76/0x150 [ 91.202004] [] clocksource_watchdog+0x217/0x2f0 [ 91.202004] [] ? clocksource_unregister+0x50/0x50 [ 91.202004] [] call_timer_fn+0x30/0x120 [ 91.202004] [] ? clocksource_unregister+0x50/0x50 [ 91.202004] [] run_timer_softirq+0x20b/0x2b0 [ 91.202004] [] __do_softirq+0xd3/0x280 [ 91.202004] [] irq_exit+0x42/0x50 [ 91.202004] [] smp_apic_timer_interrupt+0x3d/0x50 [ 91.202004] [] apic_timer_interrupt+0x7f/0x90 [ 91.202004] d [] ? default_idle+0x13/0xd0 [ 91.202004] [] arch_cpu_idle+0xa/0x10 [ 91.202004] [] default_idle_call+0x25/0x30 [ 91.202004] [] cpu_startup_entry+0x287/0x2e0 [ 91.202004] [] start_secondary+0xf9/0x100 [ 91.202004] Code: 48 03 14 c5 20 f5 f2 81 48 89 0a 8b 41 08 85 c0 75 09 f3 90 8b 41 08 85 c0 74 f7 4c 8b 01 4d 85 c0 74 08 41 0f 18 08 eb 02 f3 90 <8b> 13 66 85 d2 75 f7 be 01 00 00 00 eb 10 89 d0 f0 0f b1 33 39 [ 91.202004] NMI backtrace for cpu 11 [ 91.202004] CPU: 11 PID: 794 Comm: torture_onoff Tainted: G D 4.5.0-rc1+ #14 [ 91.202004] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 91.202004] task: ffff88007c67a580 ti: ffff88007c63c000 task.ti: ffff88007c63c000 [ 91.202004] RIP: 0010:[] [] queued_spin_lock_slowpath+0x171/0x1a0 [ 91.202004] RSP: 0000:ffff88007fb63e58 EFLAGS: 00000002 [ 91.202004] RAX: 00000000002c0101 RBX: ffff88007fb6cc00 RCX: 0000000000000001 [ 91.202004] RDX: 0000000000000101 RSI: 0000000000000001 RDI: 0000000000000101 [ 91.202004] RBP: ffff88007fb63e70 R08: 00000000000006e7 R09: 0000000000000418 [ 91.202004] R10: ffff88007c63ff58 R11: 0000000000000418 R12: 00000000cfbb42a0 [ 91.202004] R13: 0000000000000001 R14: 00000000cfbb42a0 R15: 0000000000000000 [ 91.202004] FS: 0000000000000000(0000) GS:ffff88007fb60000(0000) knlGS:0000000000000000 [ 91.202004] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 91.202004] CR2: 0000000000000000 CR3: 0000000001e0f000 CR4: 00000000000006e0 [ 91.202004] Stack: [ 91.202004] ffff88007fb6cc00 00000000cfbb42a0 0000000000000001 ffff88007fb63ea0 [ 91.202004] ffffffff81093185 ffff88007fb6cc00 ffffffff81e080c8 0000000000000001 [ 91.202004] 0000000000000001 ffff88007fb63eb8 ffffffff818b3ffb ffff88007fb6cc00 [ 91.202004] Call Trace: [ 91.202004] d [] do_raw_spin_lock+0x145/0x150 [ 91.202004] [] _raw_spin_lock_irq+0x1b/0x20 [ 91.202004] [] run_timer_softirq+0x40/0x2b0 [ 91.202004] [] ? clockevents_program_event+0x7d/0x120 [ 91.202004] [] __do_softirq+0xd3/0x280 [ 91.202004] [] irq_exit+0x42/0x50 [ 91.202004] [] smp_apic_timer_interrupt+0x3d/0x50 [ 91.202004] [] apic_timer_interrupt+0x7f/0x90 [ 91.202004] d [] ? _raw_spin_unlock_irq+0xf/0x30 [ 91.202004] [] ? _raw_spin_unlock_irq+0x9/0x30 [ 91.202004] [] acct_collect+0x166/0x1a0 [ 91.202004] [] do_exit+0x4f9/0xc00 [ 91.202004] [] oops_end+0x84/0xb0 [ 91.202004] [] no_context+0x102/0x330 [ 91.202004] [] __bad_area_nosemaphore+0x75/0x1f0 [ 91.202004] [] bad_area_nosemaphore+0xe/0x10 [ 91.202004] [] __do_page_fault+0x85/0x450 [ 91.202004] [] do_page_fault+0xc/0x10 [ 91.202004] [] page_fault+0x22/0x30 [ 91.202004] [] ? migrate_timer_list+0x32/0xc0 [ 91.202004] [] timer_cpu_notify+0xe4/0x160 [ 91.202004] [] notifier_call_chain+0x45/0x70 [ 91.202004] [] __raw_notifier_call_chain+0x9/0x10 [ 91.202004] [] cpu_notify_nofail+0x1e/0x30 [ 91.202004] [] _cpu_down+0x212/0x350 [ 91.202004] [] ? __call_rcu.constprop.74+0x380/0x380 [ 91.202004] [] ? call_rcu_bh+0x20/0x20 [ 91.202004] [] ? __rcu_read_unlock+0x50/0x50 [ 91.202004] [] ? __rcu_read_unlock+0x50/0x50 [ 91.202004] [] cpu_down+0x2f/0x50 [ 91.202004] [] torture_onoff+0x115/0x380 [ 91.202004] [] ? torture_kthread_stopping+0x70/0x70 [ 91.202004] [] kthread+0xd6/0xf0 [ 91.202004] [] ? kthread_worker_fn+0x180/0x180 [ 91.202004] [] ret_from_fork+0x3f/0x70 [ 91.202004] [] ? kthread_worker_fn+0x180/0x180 [ 91.202004] Code: d0 66 31 c0 39 c7 74 e7 4d 85 c0 c6 03 01 74 30 41 c7 40 08 01 00 00 00 e9 4e ff ff ff 83 fa 01 75 07 e9 4b ff ff ff f3 90 8b 03 <84> c0 75 f8 b8 01 00 00 00 66 89 03 5b 41 5c 41 5d 5d c3 f3 90 [ 91.202004] NMI backtrace for cpu 12 [ 91.202004] CPU: 12 PID: 790 Comm: rcu_torture_rea Tainted: G D 4.5.0-rc1+ #14 [ 91.202004] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 91.202004] task: ffff88007cb27080 ti: ffff88007c674000 task.ti: ffff88007c674000 [ 91.202004] RIP: 0010:[] [] default_send_IPI_mask_sequence_phys+0x9d/0xd0 [ 91.202004] RSP: 0000:ffff88007c677c90 EFLAGS: 00000046 [ 91.202004] RAX: 0000000000000400 RBX: 000000000000a130 RCX: 000000000000000c [ 91.202004] RDX: 000000000000000c RSI: 0000000000000010 RDI: 0000000000000300 [ 91.202004] RBP: ffff88007c677cc8 R08: 0000000000000000 R09: 000000000000dec4 [ 91.202004] R10: ffff88007c677f58 R11: 00000000000006fb R12: ffffffff81f31740 [ 91.202004] R13: 0000000000000400 R14: 0000000000000002 R15: 000000000000000c [ 91.202004] FS: 0000000000000000(0000) GS:ffff88007fb80000(0000) knlGS:0000000000000000 [ 91.202004] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 91.202004] CR2: 000055f32cd5f720 CR3: 0000000001e0f000 CR4: 00000000000006e0 [ 91.202004] Stack: [ 91.202004] 0000000000000086 0000000c7c677ca0 000000000000ff40 0000000000000001 [ 91.202004] ffffffff8103fd20 00000000cfbb42a0 ffff88007c677dd0 ffff88007c677cd8 [ 91.202004] ffffffff8103fd36 ffff88007c677d20 ffffffff81331299 ffffffff81008b50 [ 91.202004] Call Trace: [ 91.202004] [] ? irq_force_complete_move+0x20/0x20 [ 91.202004] [] nmi_raise_cpu_backtrace+0x16/0x20 [ 91.202004] [] nmi_trigger_all_cpu_backtrace+0x259/0x270 [ 91.202004] [] ? show_stack+0x20/0x50 [ 91.202004] [] arch_trigger_all_cpu_backtrace+0x14/0x20 [ 91.202004] [] do_raw_spin_lock+0xa5/0x150 [ 91.202004] [] _raw_spin_lock_irqsave+0x1f/0x30 [ 91.202004] [] lock_timer_base.isra.23+0x4f/0x70 [ 91.202004] [] mod_timer+0x6a/0x200 [ 91.202004] [] ? stutter_wait+0x49/0xc0 [ 91.202004] [] rcu_torture_reader+0x2a7/0x2e0 [ 91.202004] [] ? rcu_torture_reader+0x2e0/0x2e0 [ 91.202004] [] ? rcutorture_trace_dump.part.7+0x20/0x20 [ 91.202004] [] kthread+0xd6/0xf0 [ 91.202004] [] ? kthread_worker_fn+0x180/0x180 [ 91.202004] [] ret_from_fork+0x3f/0x70 [ 91.202004] [] ? kthread_worker_fn+0x180/0x180 [ 91.202004] Code: 90 8b 0c 25 00 c3 5f ff 80 e5 10 75 f2 89 d0 c1 e0 18 89 04 25 10 c3 5f ff 41 83 fe 02 44 89 e8 41 0f 45 c6 89 04 25 00 c3 5f ff 91 48 8b 05 32 09 ef 00 89 55 d4 ff 90 18 01 00 00 8b 55 d4 [ 91.202004] NMI backtrace for cpu 14 [ 91.202004] CPU: 14 PID: 785 Comm: rcu_torture_rea Tainted: G D 4.5.0-rc1+ #14 [ 91.202004] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 91.202004] task: ffff88007cb23200 ti: ffff88007cbb8000 task.ti: ffff88007cbb8000 [ 91.202004] RIP: 0010:[] [] check_preemption_disabled+0xf/0xe0 [ 91.202004] RSP: 0018:ffff88007cbbbd80 EFLAGS: 00000246 [ 91.202004] RAX: 0000000080000001 RBX: 000000c7ab4487ce RCX: 0000000000000001 [ 91.202004] RDX: 0000000000000000 RSI: ffffffff81ca0d44 RDI: ffffffff81cbdfe7 [ 91.202004] RBP: ffff88007cbbbd90 R08: ffff88007cbb8000 R09: ffff88007fbd53f0 [ 91.202004] R10: 0000000000000000 R11: 0000000000000001 R12: 000000c7ab40f0d2 [ 91.202004] R13: 00000000000aa2cd R14: 000000000000000e R15: ffffffff820d5fe0 [ 91.202004] FS: 0000000000000000(0000) GS:ffff88007fbc0000(0000) knlGS:0000000000000000 [ 91.202004] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 91.202004] CR2: 000055f32cd5f720 CR3: 0000000001e0f000 CR4: 00000000000006e0 [ 91.202004] Stack: [ 91.202004] 00000000000aa2cd 000000000000000e ffff88007cbbbda0 ffffffff813480d7 [ 91.202004] ffff88007cbbbdd0 ffffffff81339472 0000000000000000 ffff88007cbbbe20 [ 91.202004] 00000039515bbe80 000000000000046f ffff88007cbbbde0 ffffffff81339337 [ 91.202004] Call Trace: [ 91.202004] [] debug_smp_processor_id+0x17/0x20 [ 91.202004] [] delay_tsc+0x42/0xc0 [ 91.202004] [] __const_udelay+0x27/0x30 [ 91.202004] [] rcu_read_delay+0xa7/0xb0 [ 91.202004] [] rcu_torture_reader+0x1a8/0x2e0 [ 91.202004] [] ? rcu_torture_reader+0x2e0/0x2e0 [ 91.202004] [] ? rcutorture_trace_dump.part.7+0x20/0x20 [ 91.202004] [] kthread+0xd6/0xf0 [ 91.202004] [] ? kthread_worker_fn+0x180/0x180 [ 91.202004] [] ret_from_fork+0x3f/0x70 [ 91.202004] [] ? kthread_worker_fn+0x180/0x180 [ 91.202004] Code: 1b ff ff ff 4d 89 e7 4c 8b 6d c8 49 83 cf 01 e9 0b ff ff ff 0f 1f 84 00 00 00 00 00 55 65 8b 05 a8 2d cc 7e 48 89 e5 41 56 41 55 <41> 54 53 65 8b 1d 27 21 cc 7e a9 ff ff ff 7f 74 0b 89 d8 5b 41 [ 91.202004] NMI backtrace for cpu 15 [ 91.202004] CPU: 15 PID: 778 Comm: rcu_torture_rea Tainted: G D 4.5.0-rc1+ #14 [ 91.202004] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-20160216_104851-anatol 04/01/2014 [ 91.202004] task: ffff88007c66d780 ti: ffff88007c664000 task.ti: ffff88007c664000 [ 91.202004] RIP: 0010:[] [] __this_cpu_preempt_check+0x13/0x20 [ 91.202004] RSP: 0018:ffff88007c667e00 EFLAGS: 00000202 [ 91.202004] RAX: 000000000000000f RBX: 0000000000000000 RCX: 00000000000493e0 [ 91.202004] RDX: 0000000000000000 RSI: ffffffff81d29759 RDI: ffffffff81cbdff8 [ 91.202004] RBP: ffff88007c667e00 R08: ffff88007c664000 R09: ffff88007fbf53f0 [ 91.202004] R10: ffff88007c667e30 R11: 0000000000000001 R12: 0000000000000000 [ 91.202004] R13: 00000039515cdbe8 R14: 000000000000046f R15: ffffffff820d5fe0 [ 91.202004] FS: 0000000000000000(0000) GS:ffff88007fbe0000(0000) knlGS:0000000000000000 [ 91.202004] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 91.202004] CR2: 000055f32cd5f720 CR3: 0000000001e0f000 CR4: 00000000000006e0 [ 91.202004] Stack: [ 91.202004] ffff88007c667ea8 ffffffff810ad385 0000000000000000 0000000081a0a240 [ 91.202004] 8690c2c9a6c7a479 0000000000001532 ffff88007c5e3de0 ffff88007fbecf60 [ 91.202004] 00000000fffcd063 ffffffff810ad590 0000000000000000 ffffffff0000000f [ 91.202004] Call Trace: [ 91.202004] [] rcu_torture_reader+0xd5/0x2e0 [ 91.202004] [] ? rcu_torture_reader+0x2e0/0x2e0 [ 91.202004] [] ? rcutorture_trace_dump.part.7+0x20/0x20 [ 91.202004] [] kthread+0xd6/0xf0 [ 91.202004] [] ? kthread_worker_fn+0x180/0x180 [ 91.202004] [] ret_from_fork+0x3f/0x70 [ 91.202004] [] ? kthread_worker_fn+0x180/0x180 [ 91.202004] Code: 48 c7 c7 e7 df cb 81 48 89 e5 e8 09 ff ff ff 5d c3 0f 1f 80 00 00 00 00 55 48 89 fe 48 c7 c7 f8 df cb 81 48 89 e5 e8 ed fe ff ff <5d> c3 66 2e 0f 1f 84 00 00 00 00 00 90 55 48 85 d2 48 89 e5 41