$ ~/build/qemu/x86_64-softmmu/qemu-system-x86_64 -m 256 -enable-kvm -kernel ~/src/linux/arch/x86/boot/bzImage -vnc :1 -serial stdio -net none -append 'root=/dev/sda2 console=ttyS0 console=tty0 trace_event=rcu:rcu_nocb_wake rcu_nocb_poll' Initializing cgroup subsys cpu Linux version 3.17.0-rc1+ (amit@grmbl.mre) (gcc version 4.8.3 20140624 (Red Hat 4.8.3-1) (GCC) ) #96 SMP PREEMPT Fri Aug 22 17:46:45 IST 2014 Command line: root=/dev/sda2 console=ttyS0 console=tty0 trace_event=rcu:rcu_nocb_wake rcu_nocb_poll e820: BIOS-provided physical RAM map: BIOS-e820: [mem 0x0000000000000000-0x000000000009fbff] usable BIOS-e820: [mem 0x000000000009fc00-0x000000000009ffff] reserved BIOS-e820: [mem 0x00000000000f0000-0x00000000000fffff] reserved BIOS-e820: [mem 0x0000000000100000-0x000000000ffdffff] usable BIOS-e820: [mem 0x000000000ffe0000-0x000000000fffffff] reserved BIOS-e820: [mem 0x00000000feffc000-0x00000000feffffff] reserved BIOS-e820: [mem 0x00000000fffc0000-0x00000000ffffffff] reserved NX (Execute Disable) protection: active SMBIOS 2.8 present. Hypervisor detected: KVM AGP: No AGP bridge found e820: last_pfn = 0xffe0 max_arch_pfn = 0x400000000 PAT not supported by CPU. init_memory_mapping: [mem 0x00000000-0x000fffff] init_memory_mapping: [mem 0x0fc00000-0x0fdfffff] init_memory_mapping: [mem 0x0c000000-0x0fbfffff] init_memory_mapping: [mem 0x00100000-0x0bffffff] init_memory_mapping: [mem 0x0fe00000-0x0ffdffff] ACPI: Early table checksum verification disabled ACPI: RSDP 0x00000000000F0CB0 000014 (v00 BOCHS ) ACPI: RSDT 0x000000000FFE1854 000034 (v01 BOCHS BXPCRSDT 00000001 BXPC 00000001) ACPI: FACP 0x000000000FFE0B37 000074 (v01 BOCHS BXPCFACP 00000001 BXPC 00000001) ACPI: DSDT 0x000000000FFE0040 000AF7 (v01 BOCHS BXPCDSDT 00000001 BXPC 00000001) ACPI: FACS 0x000000000FFE0000 000040 ACPI: SSDT 0x000000000FFE0BAB 000BF9 (v01 BOCHS BXPCSSDT 00000001 BXPC 00000001) ACPI: APIC 0x000000000FFE17A4 000078 (v01 BOCHS BXPCAPIC 00000001 BXPC 00000001) ACPI: HPET 0x000000000FFE181C 000038 (v01 BOCHS BXPCHPET 00000001 BXPC 00000001) kvm-clock: Using msrs 4b564d01 and 4b564d00 kvm-clock: cpu 0, msr 0:ffdf001, primary cpu clock Zone ranges: DMA [mem 0x00001000-0x00ffffff] DMA32 [mem 0x01000000-0xffffffff] Normal empty Movable zone start for each node Early memory node ranges node 0: [mem 0x00001000-0x0009efff] node 0: [mem 0x00100000-0x0ffdffff] ACPI: PM-Timer IO Port: 0x608 ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled) ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1]) ACPI: IOAPIC (id[0x00] address[0xfec00000] gsi_base[0]) IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23 ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl) ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level) ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level) ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level) ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level) Using ACPI (MADT) for SMP configuration information ACPI: HPET id: 0x8086a201 base: 0xfed00000 smpboot: Allowing 1 CPUs, 0 hotplug CPUs PM: Registered nosave memory: [mem 0x0009f000-0x0009ffff] PM: Registered nosave memory: [mem 0x000a0000-0x000effff] PM: Registered nosave memory: [mem 0x000f0000-0x000fffff] e820: [mem 0x10000000-0xfeffbfff] available for PCI devices Booting paravirtualized kernel on KVM setup_percpu: NR_CPUS:4 nr_cpumask_bits:4 nr_cpu_ids:1 nr_node_ids:1 PERCPU: Embedded 475 pages/cpu @ffff88000fa00000 s1916544 r8192 d20864 u2097152 KVM setup async PF for cpu 0 kvm-stealtime: cpu 0, msr fa0cbc0 Built 1 zonelists in Zone order, mobility grouping on. Total pages: 64361 Kernel command line: root=/dev/sda2 console=ttyS0 console=tty0 trace_event=rcu:rcu_nocb_wake rcu_nocb_poll PID hash table entries: 1024 (order: 1, 8192 bytes) Dentry cache hash table entries: 32768 (order: 6, 262144 bytes) Inode-cache hash table entries: 16384 (order: 5, 131072 bytes) AGP: Checking aperture... AGP: No AGP bridge found Memory: 228588K/261624K available (4039K kernel code, 728K rwdata, 2188K rodata, 2872K init, 14176K bss, 33036K reserved) SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1 Preemptible hierarchical RCU implementation. RCU debugfs-based tracing is enabled. RCU lockdep checking is enabled. Additional per-CPU info printed with stalls. RCU restricting CPUs from NR_CPUS=4 to nr_cpu_ids=1. Offload RCU callbacks from all CPUs Offload RCU callbacks from CPUs: 0. Poll for callbacks from no-CBs CPUs. RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=1 NO_HZ: Full dynticks CPUs: 1-3. NR_IRQS:4352 nr_irqs:256 0 Console: colour VGA+ 80x25 console [tty0] enabled console [ttyS0] enabled Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar ... MAX_LOCKDEP_SUBCLASSES: 8 ... MAX_LOCK_DEPTH: 48 ... MAX_LOCKDEP_KEYS: 8191 ... CLASSHASH_SIZE: 4096 ... MAX_LOCKDEP_ENTRIES: 32768 ... MAX_LOCKDEP_CHAINS: 65536 ... CHAINHASH_SIZE: 32768 memory used by lock dependency info: 8671 kB per task-struct memory footprint: 2688 bytes tsc: Detected 2790.936 MHz processor Calibrating delay loop (skipped) preset value.. 5581.87 BogoMIPS (lpj=11163744) pid_max: default: 32768 minimum: 301 ACPI: Core revision 20140724 ACPI: All ACPI Tables successfully acquired Mount-cache hash table entries: 512 (order: 0, 4096 bytes) Mountpoint-cache hash table entries: 512 (order: 0, 4096 bytes) Last level iTLB entries: 4KB 0, 2MB 0, 4MB 0 Last level dTLB entries: 4KB 0, 2MB 0, 4MB 0, 1GB 0 debug: unmapping init [mem 0xffffffff81b86000-0xffffffff81b88fff] ftrace: allocating 17909 entries in 70 pages ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1 smpboot: CPU0: Intel QEMU Virtual CPU version 2.1.50 (fam: 06, model: 06, stepping: 03) Performance Events: Broken PMU hardware detected, using software events only. Failed to access perfctr msr (MSR c1 is 0) RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_sched 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_bh 0 Poll x86: Booted up 1 node, 1 CPUs smpboot: Total of 1 processors activated (5581.87 BogoMIPS) RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll prandom: seed boundary self test passed prandom: 100 self tests passed NET: Registered protocol family 16 RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll cpuidle: using governor ladder cpuidle: using governor menu RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll ACPI: bus type PCI registered acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5 RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll PCI: Using configuration type 1 for base access RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll ACPI: Added _OSI(Module Device) ACPI: Added _OSI(Processor Device) RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll ACPI: Added _OSI(3.0 _SCP Extensions) ACPI: Added _OSI(Processor Aggregator Device) RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll ACPI: Interpreter enabled RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll ACPI Exception: AE_NOT_FOUND, While evaluating Sleep State [\_S1_] (20140724/hwxface-580) RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll ACPI Exception: AE_NOT_FOUND, While evaluating Sleep State [\_S2_] (20140724/hwxface-580) RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll ACPI: (supports S0 S3 S4 S5) ACPI: Using IOAPIC for interrupt routing RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff]) RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll acpi PNP0A03:00: _OSC: OS supports [Segments MSI] RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll acpi PNP0A03:00: _OSC failed (AE_NOT_FOUND); disabling ASPM RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll acpiphp: Slot [3] registered RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll acpiphp: Slot [4] registered RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll acpiphp: Slot [5] registered acpiphp: Slot [6] registered RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll acpiphp: Slot [7] registered RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll acpiphp: Slot [8] registered RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll acpiphp: Slot [9] registered RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll acpiphp: Slot [10] registered RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll acpiphp: Slot [11] registered acpiphp: Slot [12] registered RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll acpiphp: Slot [13] registered RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll acpiphp: Slot [14] registered RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll acpiphp: Slot [15] registered RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll acpiphp: Slot [16] registered RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll acpiphp: Slot [17] registered RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll acpiphp: Slot [18] registered acpiphp: Slot [19] registered RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll acpiphp: Slot [20] registered RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll acpiphp: Slot [21] registered RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll acpiphp: Slot [22] registered RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll acpiphp: Slot [23] registered acpiphp: Slot [24] registered RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll acpiphp: Slot [25] registered RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll acpiphp: Slot [26] registered RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll acpiphp: Slot [27] registered RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll acpiphp: Slot [28] registered RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll acpiphp: Slot [29] registered acpiphp: Slot [30] registered RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll acpiphp: Slot [31] registered RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll PCI host bridge to bus 0000:00 pci_bus 0000:00: root bus resource [bus 00-ff] pci_bus 0000:00: root bus resource [io 0x0000-0x0cf7] RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll pci_bus 0000:00: root bus resource [io 0x0d00-0xadff] pci_bus 0000:00: root bus resource [io 0xae0f-0xaeff] pci_bus 0000:00: root bus resource [io 0xaf20-0xafdf] pci_bus 0000:00: root bus resource [io 0xafe4-0xffff] pci_bus 0000:00: root bus resource [mem 0x000a0000-0x000bffff] pci_bus 0000:00: root bus resource [mem 0x10000000-0xfebfffff] RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll pci 0000:00:01.1: legacy IDE quirk: reg 0x10: [io 0x01f0-0x01f7] RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll pci 0000:00:01.1: legacy IDE quirk: reg 0x14: [io 0x03f6] pci 0000:00:01.1: legacy IDE quirk: reg 0x18: [io 0x0170-0x0177] pci 0000:00:01.1: legacy IDE quirk: reg 0x1c: [io 0x0376] pci 0000:00:01.3: quirk: [io 0x0600-0x063f] claimed by PIIX4 ACPI RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll pci 0000:00:01.3: quirk: [io 0x0700-0x070f] claimed by PIIX4 SMB RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll ACPI: PCI Interrupt Link [LNKA] (IRQs 5 *10 11) RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll ACPI: PCI Interrupt Link [LNKB] (IRQs RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll 5 *10 11) RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll ACPI: PCI Interrupt Link [LNKC] (IRQs 5 10 *11) RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll ACPI: PCI Interrupt Link [LNKD] (IRQs 5 10 *11) RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll ACPI: PCI Interrupt Link [LNKS] (IRQs *9 RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll ) RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll ACPI: Enabled 16 GPEs in block 00 to 0F RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll vgaarb: device added: PCI:0000:00:02.0,decodes=io+mem,owns=io+mem,locks=none vgaarb: loaded RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll vgaarb: bridge control possible 0000:00:02.0 RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll SCSI subsystem initialized RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll pps_core: LinuxPPS API ver. 1 registered pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll PTP clock support registered RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll PCI: Using ACPI for IRQ routing RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll HPET: 3 timers in total, 0 timers will be used for per-cpu timer RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll Switched to clocksource kvm-clock RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll pnp: PnP ACPI init RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll pnp: PnP ACPI: found 6 devices RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll NET: Registered protocol family 2 RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll TCP established hash table entries: 2048 (order: 2, 16384 bytes) TCP bind hash table entries: 2048 (order: 5, 163840 bytes) RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll TCP: Hash tables configured (established 2048 bind 2048) RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll TCP: reno registered UDP hash table entries: 256 (order: 3, 49152 bytes) UDP-Lite hash table entries: 256 (order: 3, 49152 bytes) RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll NET: Registered protocol family 1 pci 0000:00:00.0: Limiting direct PCI/PCI transfers pci 0000:00:01.0: PIIX3: Enabling Passive Release pci 0000:00:01.0: Activating ISA DMA hang workarounds RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll rcu-torture:--- Start of test: nreaders=1 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=0 onoff_holdoff=0 RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll rcu-torture: Creating rcu_torture_writer task rcu-torture: Creating rcu_torture_fakewriter task rcu-torture: rcu_torture_writer task started RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll rcu-torture: Creating rcu_torture_fakewriter task rcu-torture: rcu_torture_fakewriter task started rcu-torture: Creating rcu_torture_fakewriter task RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll rcu-torture: rcu_torture_fakewriter task started rcu-torture: Creating rcu_torture_fakewriter task RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll rcu-torture: rcu_torture_fakewriter task started rcu-torture: Creating rcu_torture_reader task RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll rcu-torture: rcu_torture_fakewriter task started rcu-torture: Creating rcu_torture_stats task rcu-torture: rcu_torture_reader task started rcu-torture: Creating torture_shuffle task RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll rcu-torture: rcu_torture_stats task started rcu-torture: Creating torture_stutter task RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll rcu-torture: torture_shuffle task started RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll rcu-torture: torture_stutter task started futex hash table entries: 256 (order: 3, 32768 bytes) RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll audit: initializing netlink subsys (disabled) audit: type=2000 audit(1408709846.260:1): initialized RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll HugeTLB registered 2 MB page size, pre-allocated 0 pages RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll msgmni has been set to 446 RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll Block layer SCSI generic (bsg) driver version 0.4 loaded (major 252) RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll io scheduler noop registered (default) RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll pci_hotplug: PCI Hot Plug PCI Core version: 0.5 RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input0 ACPI: Power Button [PWRF] RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll 00:05: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll Non-volatile memory driver v1.3 Linux agpgart interface v0.103 RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll brd: module loaded RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll loop: module loaded RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll scsi host0: ata_piix RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll scsi host1: ata_piix ata1: PATA max MWDMA2 cmd 0x1f0 ctl 0x3f6 bmdma 0xc000 irq 14 RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll ata2: PATA max MWDMA2 cmd 0x170 ctl 0x376 bmdma 0xc008 irq 15 RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll libphy: Fixed MDIO Bus: probed RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll e1000: Intel(R) PRO/1000 Network Driver - version 7.3.21-k8-NAPI e1000: Copyright (c) 1999-2006 Intel Corporation. RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll i8042: PNP: PS/2 Controller [PNP0303:KBD,PNP0f13:MOU] at 0x60,0x64 irq 1,12 RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll serio: i8042 KBD port at 0x60,0x64 irq 1 RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll serio: i8042 AUX port at 0x60,0x64 irq 12 RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll mousedev: PS/2 mouse device common for all mice input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input1 RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll pps pps0: new PPS source ktimer RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll pps pps0: ktimer PPS source registered pps_ldisc: PPS line discipline registered RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll device-mapper: ioctl: 4.27.0-ioctl (2013-10-30) initialised: dm-devel@redhat.com RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll TCP: cubic registered RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll NET: Registered protocol family 17 RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll kmemleak: Kernel memory leak detector initialized RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll kmemleak: Automatic memory scanning thread started RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll ata2.00: ATAPI: QEMU DVD-ROM, 2.1.50, max UDMA/100 ata2.00: configured for MWDMA2 scsi 1:0:0:0: CD-ROM QEMU QEMU DVD-ROM 2.1. PQ: 0 ANSI: 5 RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll sr 1:0:0:0: [sr0] scsi3-mmc drive: 4x/4x cd/rw xa/form2 tray RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll cdrom: Uniform CD-ROM driver Revision: 3.20 RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll VFS: Cannot open root device "sda2" or unknown-block(0,0): error -6 Please append a correct "root=" boot option; here are the available partitions: RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll 0b00 1048575 sr0 driver: sr RCUDEBUG nocb_leader_wait 2275 rcu_preempt 0 Poll Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0) CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.17.0-rc1+ #96 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.7.5-0-ge51488c-20140602_164612-nilsson.home.kraxel.org 04/01/2014 0000000000000000 00000000b5808356 ffff88000e953df0 ffffffff813e7be9 ffffffff8157cb44 ffff88000e953e70 ffffffff813e3e62 3030623000000010 ffff88000e953e80 ffff88000e953e20 00000000b5808356 0000000000000008 Call Trace: [] dump_stack+0x4e/0x7a [] panic+0xec/0x20f [] mount_block_root+0x296/0x2a5 [] mount_root+0x53/0x56 [] prepare_namespace+0x167/0x193 [] kernel_init_freeable+0x187/0x194 [] ? do_early_param+0x88/0x88 [] ? rest_init+0x133/0x133 [] kernel_init+0xe/0xda [] ret_from_fork+0x7c/0xb0 [] ? rest_init+0x133/0x133 Kernel Offset: 0x0 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffff9fffffff) ---[ end Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0) qemu: terminating on signal 2