early console in setup code Probing EDD (edd=off to disable)... ok early console in decompress_kernel Decompressing Linux... Parsing ELF... done. Booting the kernel. [ 0.000000] Initializing cgroup subsys cpuset [ 0.000000] Initializing cgroup subsys cpu [ 0.000000] Linux version 3.16.0-rc1-00002-g6a616be (kbuild@xian) (gcc version 4.8.2 (Debian 4.8.2-18) ) #18 SMP Wed Jun 18 04:31:40 CST 2014 [ 0.000000] Command line: hung_task_panic=1 earlyprintk=ttyS0,115200 debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100 panic=10 softlockup_panic=1 nmi_watchdog=panic prompt_ramdisk=0 console=ttyS0,115200 console=tty0 vga=normal root=/dev/ram0 rw link=/kbuild-tests/run-queue/kvm/x86_64-lkp/dvdhrm:fops:6a616be3329e4ae59ae33e8de7be9b62e9535baa:bisect-linux3/.vmlinuz-6a616be3329e4ae59ae33e8de7be9b62e9535baa-20140618044332-8-ivb41 branch=dvdhrm/fops BOOT_IMAGE=/kernel/x86_64-lkp/6a616be3329e4ae59ae33e8de7be9b62e9535baa/vmlinuz-3.16.0-rc1-00002-g6a616be drbd.minor_count=8 [ 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 0x0000000000100000-0x0000000013ffdfff] usable [ 0.000000] BIOS-e820: [mem 0x0000000013ffe000-0x0000000013ffffff] reserved [ 0.000000] BIOS-e820: [mem 0x00000000feffc000-0x00000000feffffff] reserved [ 0.000000] BIOS-e820: [mem 0x00000000fffc0000-0x00000000ffffffff] reserved [ 0.000000] bootconsole [earlyser0] enabled [ 0.000000] NX (Execute Disable) protection: active [ 0.000000] SMBIOS 2.4 present. [ 0.000000] DMI: Bochs Bochs, BIOS Bochs 01/01/2011 [ 0.000000] Hypervisor detected: KVM [ 0.000000] e820: update [mem 0x00000000-0x00000fff] usable ==> reserved [ 0.000000] e820: remove [mem 0x000a0000-0x000fffff] usable [ 0.000000] AGP: No AGP bridge found [ 0.000000] e820: last_pfn = 0x13ffe max_arch_pfn = 0x400000000 [ 0.000000] MTRR default type: write-back [ 0.000000] MTRR fixed ranges enabled: [ 0.000000] 00000-9FFFF write-back [ 0.000000] A0000-BFFFF uncachable [ 0.000000] C0000-FFFFF write-protect [ 0.000000] MTRR variable ranges enabled: [ 0.000000] 0 base 0080000000 mask FF80000000 uncachable [ 0.000000] 1 disabled [ 0.000000] 2 disabled [ 0.000000] 3 disabled [ 0.000000] 4 disabled [ 0.000000] 5 disabled [ 0.000000] 6 disabled [ 0.000000] 7 disabled [ 0.000000] x86 PAT enabled: cpu 0, old 0x70406, new 0x7010600070106 [ 0.000000] Scan for SMP in [mem 0x00000000-0x000003ff] [ 0.000000] Scan for SMP in [mem 0x0009fc00-0x0009ffff] [ 0.000000] Scan for SMP in [mem 0x000f0000-0x000fffff] [ 0.000000] found SMP MP-table at [mem 0x000fdae0-0x000fdaef] mapped at [ffff8800000fdae0] [ 0.000000] mpc: fdaf0-fdbe4 [ 0.000000] Scanning 1 areas for low memory corruption [ 0.000000] Base memory trampoline at [ffff880000099000] 99000 size 24576 [ 0.000000] init_memory_mapping: [mem 0x00000000-0x000fffff] [ 0.000000] [mem 0x00000000-0x000fffff] page 4k [ 0.000000] BRK [0x02441000, 0x02441fff] PGTABLE [ 0.000000] BRK [0x02442000, 0x02442fff] PGTABLE [ 0.000000] BRK [0x02443000, 0x02443fff] PGTABLE [ 0.000000] init_memory_mapping: [mem 0x12600000-0x127fffff] [ 0.000000] [mem 0x12600000-0x127fffff] page 2M [ 0.000000] init_memory_mapping: [mem 0x10000000-0x125fffff] [ 0.000000] [mem 0x10000000-0x125fffff] page 2M [ 0.000000] init_memory_mapping: [mem 0x00100000-0x0fffffff] [ 0.000000] [mem 0x00100000-0x001fffff] page 4k [ 0.000000] [mem 0x00200000-0x0fffffff] page 2M [ 0.000000] init_memory_mapping: [mem 0x12800000-0x13ffdfff] [ 0.000000] [mem 0x12800000-0x13dfffff] page 2M [ 0.000000] [mem 0x13e00000-0x13ffdfff] page 4k [ 0.000000] BRK [0x02444000, 0x02444fff] PGTABLE [ 0.000000] RAMDISK: [mem 0x1293d000-0x13feffff] [ 0.000000] ACPI: Early table checksum verification disabled [ 0.000000] ACPI: RSDP 0x00000000000FD950 000014 (v00 BOCHS ) [ 0.000000] ACPI: RSDT 0x0000000013FFE450 000034 (v01 BOCHS BXPCRSDT 00000001 BXPC 00000001) [ 0.000000] ACPI: FACP 0x0000000013FFFF80 000074 (v01 BOCHS BXPCFACP 00000001 BXPC 00000001) [ 0.000000] ACPI: DSDT 0x0000000013FFE490 0011A9 (v01 BXPC BXDSDT 00000001 INTL 20100528) [ 0.000000] ACPI: FACS 0x0000000013FFFF40 000040 [ 0.000000] ACPI: SSDT 0x0000000013FFF7A0 000796 (v01 BOCHS BXPCSSDT 00000001 BXPC 00000001) [ 0.000000] ACPI: APIC 0x0000000013FFF680 000080 (v01 BOCHS BXPCAPIC 00000001 BXPC 00000001) [ 0.000000] ACPI: HPET 0x0000000013FFF640 000038 (v01 BOCHS BXPCHPET 00000001 BXPC 00000001) [ 0.000000] ACPI: Local APIC address 0xfee00000 [ 0.000000] mapped APIC to ffffffffff5f5000 ( fee00000) [ 0.000000] No NUMA configuration found [ 0.000000] Faking a node at [mem 0x0000000000000000-0x0000000013ffdfff] [ 0.000000] Initmem setup node 0 [mem 0x00000000-0x13ffdfff] [ 0.000000] NODE_DATA [mem 0x13ff9000-0x13ffdfff] [ 0.000000] kvm-clock: Using msrs 4b564d01 and 4b564d00 [ 0.000000] kvm-clock: cpu 0, msr 0:13ff1001, primary cpu clock [ 0.000000] [ffffea0000000000-ffffea00005fffff] PMD -> [ffff880011a00000-ffff880011ffffff] on node 0 [ 0.000000] Zone ranges: [ 0.000000] DMA [mem 0x00001000-0x00ffffff] [ 0.000000] DMA32 [mem 0x01000000-0xffffffff] [ 0.000000] Normal empty [ 0.000000] Movable zone start for each node [ 0.000000] Early memory node ranges [ 0.000000] node 0: [mem 0x00001000-0x0009efff] [ 0.000000] node 0: [mem 0x00100000-0x13ffdfff] [ 0.000000] On node 0 totalpages: 81820 [ 0.000000] DMA zone: 64 pages used for memmap [ 0.000000] DMA zone: 21 pages reserved [ 0.000000] DMA zone: 3998 pages, LIFO batch:0 [ 0.000000] DMA32 zone: 1216 pages used for memmap [ 0.000000] DMA32 zone: 77822 pages, LIFO batch:15 [ 0.000000] ACPI: PM-Timer IO Port: 0xb008 [ 0.000000] ACPI: Local APIC address 0xfee00000 [ 0.000000] mapped APIC to ffffffffff5f5000 ( fee00000) [ 0.000000] ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x01] lapic_id[0x01] enabled) [ 0.000000] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1]) [ 0.000000] ACPI: IOAPIC (id[0x00] address[0xfec00000] gsi_base[0]) [ 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] Int: type 0, pol 0, trig 0, bus 00, IRQ 00, APIC ID 0, APIC INT 02 [ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level) [ 0.000000] Int: type 0, pol 1, trig 3, bus 00, IRQ 05, APIC ID 0, APIC INT 05 [ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level) [ 0.000000] Int: type 0, pol 1, trig 3, bus 00, IRQ 09, APIC ID 0, APIC INT 09 [ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level) [ 0.000000] Int: type 0, pol 1, trig 3, bus 00, IRQ 0a, APIC ID 0, APIC INT 0a [ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level) [ 0.000000] Int: type 0, pol 1, trig 3, bus 00, IRQ 0b, APIC ID 0, APIC INT 0b [ 0.000000] ACPI: IRQ0 used by override. [ 0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 01, APIC ID 0, APIC INT 01 [ 0.000000] ACPI: IRQ2 used by override. [ 0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 03, APIC ID 0, APIC INT 03 [ 0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 04, APIC ID 0, APIC INT 04 [ 0.000000] ACPI: IRQ5 used by override. [ 0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 06, APIC ID 0, APIC INT 06 [ 0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 07, APIC ID 0, APIC INT 07 [ 0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 08, APIC ID 0, APIC INT 08 [ 0.000000] ACPI: IRQ9 used by override. [ 0.000000] ACPI: IRQ10 used by override. [ 0.000000] ACPI: IRQ11 used by override. [ 0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 0c, APIC ID 0, APIC INT 0c [ 0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 0d, APIC ID 0, APIC INT 0d [ 0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 0e, APIC ID 0, APIC INT 0e [ 0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 0f, APIC ID 0, APIC INT 0f [ 0.000000] Using ACPI (MADT) for SMP configuration information [ 0.000000] ACPI: HPET id: 0x8086a201 base: 0xfed00000 [ 0.000000] smpboot: Allowing 2 CPUs, 0 hotplug CPUs [ 0.000000] mapped IOAPIC to ffffffffff5f4000 (fec00000) [ 0.000000] nr_irqs_gsi: 40 [ 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 0x14000000-0xfeffbfff] available for PCI devices [ 0.000000] Booting paravirtualized kernel on KVM [ 0.000000] setup_percpu: NR_CPUS:512 nr_cpumask_bits:512 nr_cpu_ids:2 nr_node_ids:1 [ 0.000000] PERCPU: Embedded 27 pages/cpu @ffff880012600000 s80704 r8192 d21696 u1048576 [ 0.000000] pcpu-alloc: s80704 r8192 d21696 u1048576 alloc=1*2097152 [ 0.000000] pcpu-alloc: [0] 0 1 [ 0.000000] KVM setup async PF for cpu 0 [ 0.000000] kvm-stealtime: cpu 0, msr 1260d040 [ 0.000000] Built 1 zonelists in Node order, mobility grouping on. Total pages: 80519 [ 0.000000] Policy zone: DMA32 [ 0.000000] Kernel command line: hung_task_panic=1 earlyprintk=ttyS0,115200 debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100 panic=10 softlockup_panic=1 nmi_watchdog=panic prompt_ramdisk=0 console=ttyS0,115200 console=tty0 vga=normal root=/dev/ram0 rw link=/kbuild-tests/run-queue/kvm/x86_64-lkp/dvdhrm:fops:6a616be3329e4ae59ae33e8de7be9b62e9535baa:bisect-linux3/.vmlinuz-6a616be3329e4ae59ae33e8de7be9b62e9535baa-20140618044332-8-ivb41 branch=dvdhrm/fops BOOT_IMAGE=/kernel/x86_64-lkp/6a616be3329e4ae59ae33e8de7be9b62e9535baa/vmlinuz-3.16.0-rc1-00002-g6a616be drbd.minor_count=8 [ 0.000000] sysrq: sysrq always enabled. [ 0.000000] PID hash table entries: 2048 (order: 2, 16384 bytes) [ 0.000000] AGP: Checking aperture... [ 0.000000] AGP: No AGP bridge found [ 0.000000] Memory: 276536K/327280K available (10049K kernel code, 1270K rwdata, 4220K rodata, 1424K init, 1608K bss, 50744K reserved) [ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1 [ 0.000000] Hierarchical RCU implementation. [ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2 [ 0.000000] NR_IRQS:33024 nr_irqs:512 16 [ 0.000000] Console: colour VGA+ 80x25 [ 0.000000] console [tty0] enabled [ 0.000000] bootconsole [earlyser0] disabled [ 0.000000] Initializing cgroup subsys cpuset [ 0.000000] Initializing cgroup subsys cpu [ 0.000000] Linux version 3.16.0-rc1-00002-g6a616be (kbuild@xian) (gcc version 4.8.2 (Debian 4.8.2-18) ) #18 SMP Wed Jun 18 04:31:40 CST 2014 [ 0.000000] Command line: hung_task_panic=1 earlyprintk=ttyS0,115200 debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100 panic=10 softlockup_panic=1 nmi_watchdog=panic prompt_ramdisk=0 console=ttyS0,115200 console=tty0 vga=normal root=/dev/ram0 rw link=/kbuild-tests/run-queue/kvm/x86_64-lkp/dvdhrm:fops:6a616be3329e4ae59ae33e8de7be9b62e9535baa:bisect-linux3/.vmlinuz-6a616be3329e4ae59ae33e8de7be9b62e9535baa-20140618044332-8-ivb41 branch=dvdhrm/fops BOOT_IMAGE=/kernel/x86_64-lkp/6a616be3329e4ae59ae33e8de7be9b62e9535baa/vmlinuz-3.16.0-rc1-00002-g6a616be drbd.minor_count=8 [ 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 0x0000000000100000-0x0000000013ffdfff] usable [ 0.000000] BIOS-e820: [mem 0x0000000013ffe000-0x0000000013ffffff] reserved [ 0.000000] BIOS-e820: [mem 0x00000000feffc000-0x00000000feffffff] reserved [ 0.000000] BIOS-e820: [mem 0x00000000fffc0000-0x00000000ffffffff] reserved [ 0.000000] bootconsole [earlyser0] enabled [ 0.000000] NX (Execute Disable) protection: active [ 0.000000] SMBIOS 2.4 present. [ 0.000000] DMI: Bochs Bochs, BIOS Bochs 01/01/2011 [ 0.000000] Hypervisor detected: KVM [ 0.000000] e820: update [mem 0x00000000-0x00000fff] usable ==> reserved [ 0.000000] e820: remove [mem 0x000a0000-0x000fffff] usable [ 0.000000] AGP: No AGP bridge found [ 0.000000] e820: last_pfn = 0x13ffe max_arch_pfn = 0x400000000 [ 0.000000] MTRR default type: write-back [ 0.000000] MTRR fixed ranges enabled: [ 0.000000] 00000-9FFFF write-back [ 0.000000] A0000-BFFFF uncachable [ 0.000000] C0000-FFFFF write-protect [ 0.000000] MTRR variable ranges enabled: [ 0.000000] 0 base 0080000000 mask FF80000000 uncachable [ 0.000000] 1 disabled [ 0.000000] 2 disabled [ 0.000000] 3 disabled [ 0.000000] 4 disabled [ 0.000000] 5 disabled [ 0.000000] 6 disabled [ 0.000000] 7 disabled [ 0.000000] x86 PAT enabled: cpu 0, old 0x70406, new 0x7010600070106 [ 0.000000] Scan for SMP in [mem 0x00000000-0x000003ff] [ 0.000000] Scan for SMP in [mem 0x0009fc00-0x0009ffff] [ 0.000000] Scan for SMP in [mem 0x000f0000-0x000fffff] [ 0.000000] found SMP MP-table at [mem 0x000fdae0-0x000fdaef] mapped at [ffff8800000fdae0] [ 0.000000] mpc: fdaf0-fdbe4 [ 0.000000] Scanning 1 areas for low memory corruption [ 0.000000] Base memory trampoline at [ffff880000099000] 99000 size 24576 [ 0.000000] init_memory_mapping: [mem 0x00000000-0x000fffff] [ 0.000000] [mem 0x00000000-0x000fffff] page 4k [ 0.000000] BRK [0x02441000, 0x02441fff] PGTABLE [ 0.000000] BRK [0x02442000, 0x02442fff] PGTABLE [ 0.000000] BRK [0x02443000, 0x02443fff] PGTABLE [ 0.000000] init_memory_mapping: [mem 0x12600000-0x127fffff] [ 0.000000] [mem 0x12600000-0x127fffff] page 2M [ 0.000000] init_memory_mapping: [mem 0x10000000-0x125fffff] [ 0.000000] [mem 0x10000000-0x125fffff] page 2M [ 0.000000] init_memory_mapping: [mem 0x00100000-0x0fffffff] [ 0.000000] [mem 0x00100000-0x001fffff] page 4k [ 0.000000] [mem 0x00200000-0x0fffffff] page 2M [ 0.000000] init_memory_mapping: [mem 0x12800000-0x13ffdfff] [ 0.000000] [mem 0x12800000-0x13dfffff] page 2M [ 0.000000] [mem 0x13e00000-0x13ffdfff] page 4k [ 0.000000] BRK [0x02444000, 0x02444fff] PGTABLE [ 0.000000] RAMDISK: [mem 0x1293d000-0x13feffff] [ 0.000000] ACPI: Early table checksum verification disabled [ 0.000000] ACPI: RSDP 0x00000000000FD950 000014 (v00 BOCHS ) [ 0.000000] ACPI: RSDT 0x0000000013FFE450 000034 (v01 BOCHS BXPCRSDT 00000001 BXPC 00000001) [ 0.000000] ACPI: FACP 0x0000000013FFFF80 000074 (v01 BOCHS BXPCFACP 00000001 BXPC 00000001) [ 0.000000] ACPI: DSDT 0x0000000013FFE490 0011A9 (v01 BXPC BXDSDT 00000001 INTL 20100528) [ 0.000000] ACPI: FACS 0x0000000013FFFF40 000040 [ 0.000000] ACPI: SSDT 0x0000000013FFF7A0 000796 (v01 BOCHS BXPCSSDT 00000001 BXPC 00000001) [ 0.000000] ACPI: APIC 0x0000000013FFF680 000080 (v01 BOCHS BXPCAPIC 00000001 BXPC 00000001) [ 0.000000] ACPI: HPET 0x0000000013FFF640 000038 (v01 BOCHS BXPCHPET 00000001 BXPC 00000001) [ 0.000000] ACPI: Local APIC address 0xfee00000 [ 0.000000] mapped APIC to ffffffffff5f5000 ( fee00000) [ 0.000000] No NUMA configuration found [ 0.000000] Faking a node at [mem 0x0000000000000000-0x0000000013ffdfff] [ 0.000000] Initmem setup node 0 [mem 0x00000000-0x13ffdfff] [ 0.000000] NODE_DATA [mem 0x13ff9000-0x13ffdfff] [ 0.000000] kvm-clock: Using msrs 4b564d01 and 4b564d00 [ 0.000000] kvm-clock: cpu 0, msr 0:13ff1001, primary cpu clock [ 0.000000] [ffffea0000000000-ffffea00005fffff] PMD -> [ffff880011a00000-ffff880011ffffff] on node 0 [ 0.000000] Zone ranges: [ 0.000000] DMA [mem 0x00001000-0x00ffffff] [ 0.000000] DMA32 [mem 0x01000000-0xffffffff] [ 0.000000] Normal empty [ 0.000000] Movable zone start for each node [ 0.000000] Early memory node ranges [ 0.000000] node 0: [mem 0x00001000-0x0009efff] [ 0.000000] node 0: [mem 0x00100000-0x13ffdfff] [ 0.000000] On node 0 totalpages: 81820 [ 0.000000] DMA zone: 64 pages used for memmap [ 0.000000] DMA zone: 21 pages reserved [ 0.000000] DMA zone: 3998 pages, LIFO batch:0 [ 0.000000] DMA32 zone: 1216 pages used for memmap [ 0.000000] DMA32 zone: 77822 pages, LIFO batch:15 [ 0.000000] ACPI: PM-Timer IO Port: 0xb008 [ 0.000000] ACPI: Local APIC address 0xfee00000 [ 0.000000] mapped APIC to ffffffffff5f5000 ( fee00000) [ 0.000000] ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x01] lapic_id[0x01] enabled) [ 0.000000] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1]) [ 0.000000] ACPI: IOAPIC (id[0x00] address[0xfec00000] gsi_base[0]) [ 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] Int: type 0, pol 0, trig 0, bus 00, IRQ 00, APIC ID 0, APIC INT 02 [ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level) [ 0.000000] Int: type 0, pol 1, trig 3, bus 00, IRQ 05, APIC ID 0, APIC INT 05 [ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level) [ 0.000000] Int: type 0, pol 1, trig 3, bus 00, IRQ 09, APIC ID 0, APIC INT 09 [ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level) [ 0.000000] Int: type 0, pol 1, trig 3, bus 00, IRQ 0a, APIC ID 0, APIC INT 0a [ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level) [ 0.000000] Int: type 0, pol 1, trig 3, bus 00, IRQ 0b, APIC ID 0, APIC INT 0b [ 0.000000] ACPI: IRQ0 used by override. [ 0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 01, APIC ID 0, APIC INT 01 [ 0.000000] ACPI: IRQ2 used by override. [ 0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 03, APIC ID 0, APIC INT 03 [ 0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 04, APIC ID 0, APIC INT 04 [ 0.000000] ACPI: IRQ5 used by override. [ 0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 06, APIC ID 0, APIC INT 06 [ 0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 07, APIC ID 0, APIC INT 07 [ 0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 08, APIC ID 0, APIC INT 08 [ 0.000000] ACPI: IRQ9 used by override. [ 0.000000] ACPI: IRQ10 used by override. [ 0.000000] ACPI: IRQ11 used by override. [ 0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 0c, APIC ID 0, APIC INT 0c [ 0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 0d, APIC ID 0, APIC INT 0d [ 0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 0e, APIC ID 0, APIC INT 0e [ 0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 0f, APIC ID 0, APIC INT 0f [ 0.000000] Using ACPI (MADT) for SMP configuration information [ 0.000000] ACPI: HPET id: 0x8086a201 base: 0xfed00000 [ 0.000000] smpboot: Allowing 2 CPUs, 0 hotplug CPUs [ 0.000000] mapped IOAPIC to ffffffffff5f4000 (fec00000) [ 0.000000] nr_irqs_gsi: 40 [ 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 0x14000000-0xfeffbfff] available for PCI devices [ 0.000000] Booting paravirtualized kernel on KVM [ 0.000000] setup_percpu: NR_CPUS:512 nr_cpumask_bits:512 nr_cpu_ids:2 nr_node_ids:1 [ 0.000000] PERCPU: Embedded 27 pages/cpu @ffff880012600000 s80704 r8192 d21696 u1048576 [ 0.000000] pcpu-alloc: s80704 r8192 d21696 u1048576 alloc=1*2097152 [ 0.000000] pcpu-alloc: [0] 0 1 [ 0.000000] KVM setup async PF for cpu 0 [ 0.000000] kvm-stealtime: cpu 0, msr 1260d040 [ 0.000000] Built 1 zonelists in Node order, mobility grouping on. Total pages: 80519 [ 0.000000] Policy zone: DMA32 [ 0.000000] Kernel command line: hung_task_panic=1 earlyprintk=ttyS0,115200 debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100 panic=10 softlockup_panic=1 nmi_watchdog=panic prompt_ramdisk=0 console=ttyS0,115200 console=tty0 vga=normal root=/dev/ram0 rw link=/kbuild-tests/run-queue/kvm/x86_64-lkp/dvdhrm:fops:6a616be3329e4ae59ae33e8de7be9b62e9535baa:bisect-linux3/.vmlinuz-6a616be3329e4ae59ae33e8de7be9b62e9535baa-20140618044332-8-ivb41 branch=dvdhrm/fops BOOT_IMAGE=/kernel/x86_64-lkp/6a616be3329e4ae59ae33e8de7be9b62e9535baa/vmlinuz-3.16.0-rc1-00002-g6a616be drbd.minor_count=8 [ 0.000000] sysrq: sysrq always enabled. [ 0.000000] PID hash table entries: 2048 (order: 2, 16384 bytes) [ 0.000000] AGP: Checking aperture... [ 0.000000] AGP: No AGP bridge found [ 0.000000] Memory: 276536K/327280K available (10049K kernel code, 1270K rwdata, 4220K rodata, 1424K init, 1608K bss, 50744K reserved) [ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1 [ 0.000000] Hierarchical RCU implementation. [ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2 [ 0.000000] NR_IRQS:33024 nr_irqs:512 16 [ 0.000000] Console: colour VGA+ 80x25 [ 0.000000] console [tty0] enabled [ 0.000000] bootconsole [earlyser0] disabled [ 0.000000] console [ttyS0] enabled [ 0.000000] allocated 1572864 bytes of page_cgroup [ 0.000000] please try 'cgroup_disable=memory' option if you don't want memory cgroups [ 0.000000] hpet clockevent registered [ 0.000000] tsc: Detected 2693.482 MHz processor [ 0.008000] Calibrating delay loop (skipped) preset value.. 5386.96 BogoMIPS (lpj=10773928) [ 0.008000] pid_max: default: 32768 minimum: 301 [ 0.008000] ACPI: Core revision 20140424 [ 0.008000] ACPI: All ACPI Tables successfully acquired [ 0.008854] Dentry cache hash table entries: 65536 (order: 7, 524288 bytes) [ 0.010291] Inode-cache hash table entries: 32768 (order: 6, 262144 bytes) [ 0.011522] Mount-cache hash table entries: 1024 (order: 1, 8192 bytes) [ 0.012007] Mountpoint-cache hash table entries: 1024 (order: 1, 8192 bytes) [ 0.013069] ------------[ cut here ]------------ [ 0.013865] WARNING: CPU: 0 PID: 0 at fs/kernfs/dir.c:947 kernfs_activate+0x90/0xd0() [ 0.016004] Modules linked in: [ 0.016765] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.16.0-rc1-00002-g6a616be #18 [ 0.018102] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 0.019012] 0000000000000000 ffffffff82003e18 ffffffff819c2b6e 0000000000000000 [ 0.020393] ffffffff82003e50 ffffffff810e0e90 ffffffff81249048 ffff88001167f000 [ 0.021966] ffff88001167f000 0000000000000002 0000000000000000 ffffffff82003e60 [ 0.023587] Call Trace: [ 0.024007] [] dump_stack+0x4d/0x66 [ 0.024847] [] warn_slowpath_common+0x7f/0x98 [ 0.025744] [] ? kernfs_activate+0x90/0xd0 [ 0.026620] [] warn_slowpath_null+0x1a/0x1c [ 0.028005] [] kernfs_activate+0x90/0xd0 [ 0.028887] [] kernfs_create_root+0xd8/0xe7 [ 0.029779] [] sysfs_init+0x13/0x51 [ 0.030593] [] mnt_init+0x116/0x215 [ 0.031415] [] vfs_caches_init+0x99/0x110 [ 0.032007] [] start_kernel+0x3d2/0x424 [ 0.032864] [] ? set_init_arg+0x53/0x53 [ 0.033713] [] ? early_idt_handlers+0x120/0x120 [ 0.034706] [] x86_64_start_reservations+0x2a/0x2c [ 0.036006] [] x86_64_start_kernel+0x13b/0x148 [ 0.036945] ---[ end trace a625764830fea92a ]--- [ 0.037981] Initializing cgroup subsys memory [ 0.038800] Initializing cgroup subsys devices [ 0.039560] Initializing cgroup subsys freezer [ 0.040007] Initializing cgroup subsys blkio [ 0.040753] Initializing cgroup subsys perf_event [ 0.041535] Initializing cgroup subsys hugetlb [ 0.042348] mce: CPU supports 10 MCE banks [ 0.043102] Last level iTLB entries: 4KB 0, 2MB 0, 4MB 0 [ 0.043102] Last level dTLB entries: 4KB 0, 2MB 0, 4MB 0, 1GB 0 [ 0.043102] tlb_flushall_shift: 6 [ 0.044119] Freeing SMP alternatives memory: 40K (ffffffff822a3000 - ffffffff822ad000) [ 0.050929] ftrace: allocating 39507 entries in 155 pages [ 0.060111] Getting VERSION: 50014 [ 0.060785] Getting VERSION: 50014 [ 0.061481] Getting ID: 0 [ 0.062066] Getting ID: ff000000 [ 0.064007] Getting LVT0: 8700 [ 0.064653] Getting LVT1: 8400 [ 0.065285] enabled ExtINT on CPU#0 [ 0.066556] ENABLING IO-APIC IRQs [ 0.067216] init IO_APIC IRQs [ 0.068004] apic 0 pin 0 not connected [ 0.068726] IOAPIC[0]: Set routing entry (0-1 -> 0x31 -> IRQ 1 Mode:0 Active:0 Dest:1) [ 0.070096] IOAPIC[0]: Set routing entry (0-2 -> 0x30 -> IRQ 0 Mode:0 Active:0 Dest:1) [ 0.071507] IOAPIC[0]: Set routing entry (0-3 -> 0x33 -> IRQ 3 Mode:0 Active:0 Dest:1) [ 0.072013] IOAPIC[0]: Set routing entry (0-4 -> 0x34 -> IRQ 4 Mode:0 Active:0 Dest:1) [ 0.073377] IOAPIC[0]: Set routing entry (0-5 -> 0x35 -> IRQ 5 Mode:1 Active:0 Dest:1) [ 0.074743] IOAPIC[0]: Set routing entry (0-6 -> 0x36 -> IRQ 6 Mode:0 Active:0 Dest:1) [ 0.076013] IOAPIC[0]: Set routing entry (0-7 -> 0x37 -> IRQ 7 Mode:0 Active:0 Dest:1) [ 0.077428] IOAPIC[0]: Set routing entry (0-8 -> 0x38 -> IRQ 8 Mode:0 Active:0 Dest:1) [ 0.080014] IOAPIC[0]: Set routing entry (0-9 -> 0x39 -> IRQ 9 Mode:1 Active:0 Dest:1) [ 0.081401] IOAPIC[0]: Set routing entry (0-10 -> 0x3a -> IRQ 10 Mode:1 Active:0 Dest:1) [ 0.082786] IOAPIC[0]: Set routing entry (0-11 -> 0x3b -> IRQ 11 Mode:1 Active:0 Dest:1) [ 0.084014] IOAPIC[0]: Set routing entry (0-12 -> 0x3c -> IRQ 12 Mode:0 Active:0 Dest:1) [ 0.085399] IOAPIC[0]: Set routing entry (0-13 -> 0x3d -> IRQ 13 Mode:0 Active:0 Dest:1) [ 0.086884] IOAPIC[0]: Set routing entry (0-14 -> 0x3e -> IRQ 14 Mode:0 Active:0 Dest:1) [ 0.088013] IOAPIC[0]: Set routing entry (0-15 -> 0x3f -> IRQ 15 Mode:0 Active:0 Dest:1) [ 0.089400] apic 0 pin 16 not connected [ 0.090182] apic 0 pin 17 not connected [ 0.090879] apic 0 pin 18 not connected [ 0.092002] apic 0 pin 19 not connected [ 0.092708] apic 0 pin 20 not connected [ 0.093407] apic 0 pin 21 not connected [ 0.094114] apic 0 pin 22 not connected [ 0.094820] apic 0 pin 23 not connected [ 0.095659] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1 [ 0.096002] smpboot: CPU0: Intel Common KVM processor (fam: 0f, model: 06, stepping: 01) [ 0.097835] Using local APIC timer interrupts. [ 0.097835] calibrating APIC timer ... [ 0.104000] ... lapic delta = 6250164 [ 0.104000] ... PM-Timer delta = 357964 [ 0.104000] ... PM-Timer result ok [ 0.104000] ..... delta 6250164 [ 0.104000] ..... mult: 268442499 [ 0.104000] ..... calibration result: 4000104 [ 0.104000] ..... CPU clock speed is 2693.2092 MHz. [ 0.104000] ..... host bus clock speed is 1000.0104 MHz. [ 0.104045] Performance Events: unsupported Netburst CPU model 6 no PMU driver, software events only. [ 0.107457] x86: Booting SMP configuration: [ 0.108003] .... node #0, CPUs: #1 [ 0.008000] kvm-clock: cpu 1, msr 0:13ff1041, secondary cpu clock [ 0.008000] masked ExtINT on CPU#1 [ 0.124020] x86: Booted up 1 node, 2 CPUs [ 0.124010] KVM setup async PF for cpu 1 [ 0.124014] kvm-stealtime: cpu 1, msr 1270d040 [ 0.126463] smpboot: Total of 2 processors activated (10773.92 BogoMIPS) [ 0.128183] devtmpfs: initialized [ 0.132474] xor: measuring software checksum speed [ 0.172006] prefetch64-sse: 136.000 MB/sec [ 0.212026] generic_sse: 136.000 MB/sec [ 0.212762] xor: using function: generic_sse (136.000 MB/sec) [ 0.213641] atomic64_test: passed for x86-64 platform with CX8 and with SSE [ 0.214763] NET: Registered protocol family 16 [ 0.216172] cpuidle: using governor ladder [ 0.216918] cpuidle: using governor menu [ 0.218019] ACPI: bus type PCI registered [ 0.218737] acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5 [ 0.219803] PCI: Using configuration type 1 for base access [ 0.304009] raid6: sse2x1 8545 MB/s [ 0.372002] raid6: sse2x2 10728 MB/s [ 0.440006] raid6: sse2x4 12884 MB/s [ 0.440716] raid6: using algorithm sse2x4 (12884 MB/s) [ 0.441530] raid6: using intx1 recovery algorithm [ 0.442341] ACPI: Added _OSI(Module Device) [ 0.443070] ACPI: Added _OSI(Processor Device) [ 0.443861] ACPI: Added _OSI(3.0 _SCP Extensions) [ 0.444008] ACPI: Added _OSI(Processor Aggregator Device) [ 0.446165] ACPI: Interpreter enabled [ 0.446859] ACPI Exception: AE_NOT_FOUND, While evaluating Sleep State [\_S1_] (20140424/hwxface-580) [ 0.448558] ACPI Exception: AE_NOT_FOUND, While evaluating Sleep State [\_S2_] (20140424/hwxface-580) [ 0.450158] ACPI: (supports S0 S3 S4 S5) [ 0.450862] ACPI: Using IOAPIC for interrupt routing [ 0.452021] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug [ 0.456132] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff]) [ 0.457052] acpi PNP0A03:00: _OSC: OS supports [ASPM ClockPM Segments MSI] [ 0.458031] acpi PNP0A03:00: _OSC failed (AE_NOT_FOUND); disabling ASPM [ 0.459054] acpi PNP0A03:00: fail to add MMCONFIG information, can't access extended PCI configuration space under this bridge. [ 0.460264] acpiphp: Slot [3] registered [ 0.461000] acpiphp: Slot [4] registered [ 0.461772] acpiphp: Slot [5] registered [ 0.462505] acpiphp: Slot [6] registered [ 0.464029] acpiphp: Slot [7] registered [ 0.464761] acpiphp: Slot [8] registered [ 0.465491] acpiphp: Slot [9] registered [ 0.466226] acpiphp: Slot [10] registered [ 0.466968] acpiphp: Slot [11] registered [ 0.467743] acpiphp: Slot [12] registered [ 0.468030] acpiphp: Slot [13] registered [ 0.468770] acpiphp: Slot [14] registered [ 0.469502] acpiphp: Slot [15] registered [ 0.470313] acpiphp: Slot [24] registered [ 0.471057] acpiphp: Slot [25] registered [ 0.472029] acpiphp: Slot [26] registered [ 0.472775] acpiphp: Slot [27] registered [ 0.473505] acpiphp: Slot [28] registered [ 0.474243] acpiphp: Slot [29] registered [ 0.474985] acpiphp: Slot [30] registered [ 0.476027] acpiphp: Slot [31] registered [ 0.476747] PCI host bridge to bus 0000:00 [ 0.477469] pci_bus 0000:00: root bus resource [bus 00-ff] [ 0.478342] pci_bus 0000:00: root bus resource [io 0x0000-0x0cf7] [ 0.479292] pci_bus 0000:00: root bus resource [io 0x0d00-0xffff] [ 0.480004] pci_bus 0000:00: root bus resource [mem 0x000a0000-0x000bffff] [ 0.480980] pci_bus 0000:00: root bus resource [mem 0x80000000-0xfebfffff] [ 0.481983] pci 0000:00:00.0: [8086:1237] type 00 class 0x060000 [ 0.484273] pci 0000:00:01.0: [8086:7000] type 00 class 0x060100 [ 0.485540] pci 0000:00:01.1: [8086:7010] type 00 class 0x010180 [ 0.488588] pci 0000:00:01.1: reg 0x20: [io 0xc040-0xc04f] [ 0.490203] pci 0000:00:01.1: legacy IDE quirk: reg 0x10: [io 0x01f0-0x01f7] [ 0.491207] pci 0000:00:01.1: legacy IDE quirk: reg 0x14: [io 0x03f6] [ 0.492004] pci 0000:00:01.1: legacy IDE quirk: reg 0x18: [io 0x0170-0x0177] [ 0.493014] pci 0000:00:01.1: legacy IDE quirk: reg 0x1c: [io 0x0376] [ 0.494105] pci 0000:00:01.3: [8086:7113] type 00 class 0x068000 [ 0.495274] pci 0000:00:01.3: quirk: [io 0xb000-0xb03f] claimed by PIIX4 ACPI [ 0.496017] pci 0000:00:01.3: quirk: [io 0xb100-0xb10f] claimed by PIIX4 SMB [ 0.497190] pci 0000:00:02.0: [1013:00b8] type 00 class 0x030000 [ 0.500459] pci 0000:00:02.0: reg 0x10: [mem 0xfc000000-0xfdffffff pref] [ 0.502474] pci 0000:00:02.0: reg 0x14: [mem 0xfebf0000-0xfebf0fff] [ 0.509388] pci 0000:00:02.0: reg 0x30: [mem 0xfebe0000-0xfebeffff pref] [ 0.510784] pci 0000:00:03.0: [8086:100e] type 00 class 0x020000 [ 0.512387] pci 0000:00:03.0: reg 0x10: [mem 0xfeba0000-0xfebbffff] [ 0.514005] pci 0000:00:03.0: reg 0x14: [io 0xc000-0xc03f] [ 0.518432] pci 0000:00:03.0: reg 0x30: [mem 0xfebc0000-0xfebdffff pref] [ 0.519553] pci 0000:00:04.0: [8086:25ab] type 00 class 0x088000 [ 0.520394] pci 0000:00:04.0: reg 0x10: [mem 0xfebf1000-0xfebf100f] [ 0.524763] ACPI: PCI Interrupt Link [LNKA] (IRQs 5 *10 11) [ 0.526001] ACPI: PCI Interrupt Link [LNKB] (IRQs 5 *10 11) [ 0.527226] ACPI: PCI Interrupt Link [LNKC] (IRQs 5 10 *11) [ 0.528663] ACPI: PCI Interrupt Link [LNKD] (IRQs 5 10 *11) [ 0.529893] ACPI: PCI Interrupt Link [LNKS] (IRQs *9) [ 0.531197] ACPI: Enabled 16 GPEs in block 00 to 0F [ 0.532147] vgaarb: device added: PCI:0000:00:02.0,decodes=io+mem,owns=io+mem,locks=none [ 0.533405] vgaarb: loaded [ 0.533995] vgaarb: bridge control possible 0000:00:02.0 [ 0.534964] SCSI subsystem initialized [ 0.536101] libata version 3.00 loaded. [ 0.536795] ACPI: bus type USB registered [ 0.537569] usbcore: registered new interface driver usbfs [ 0.538440] usbcore: registered new interface driver hub [ 0.539296] usbcore: registered new device driver usb [ 0.540054] pps_core: LinuxPPS API ver. 1 registered [ 0.540856] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti [ 0.542311] PTP clock support registered [ 0.543070] EDAC MC: Ver: 3.0.0 [ 0.544178] PCI: Using ACPI for IRQ routing [ 0.544914] PCI: pci_cache_line_size set to 64 bytes [ 0.545791] e820: reserve RAM buffer [mem 0x0009fc00-0x0009ffff] [ 0.546681] e820: reserve RAM buffer [mem 0x13ffe000-0x13ffffff] [ 0.548573] HPET: 3 timers in total, 0 timers will be used for per-cpu timer [ 0.549573] hpet0: at MMIO 0xfed00000, IRQs 2, 8, 0 [ 0.550604] hpet0: 3 comparators, 64-bit 100.000000 MHz counter [ 0.555179] Switched to clocksource kvm-clock [ 0.564941] pnp: PnP ACPI init [ 0.565614] ACPI: bus type PNP registered [ 0.566383] IOAPIC[0]: Set routing entry (0-8 -> 0x38 -> IRQ 8 Mode:0 Active:0 Dest:3) [ 0.567858] pnp 00:00: Plug and Play ACPI device, IDs PNP0b00 (active) [ 0.568907] IOAPIC[0]: Set routing entry (0-1 -> 0x31 -> IRQ 1 Mode:0 Active:0 Dest:3) [ 0.570335] pnp 00:01: Plug and Play ACPI device, IDs PNP0303 (active) [ 0.571329] IOAPIC[0]: Set routing entry (0-12 -> 0x3c -> IRQ 12 Mode:0 Active:0 Dest:3) [ 0.572819] pnp 00:02: Plug and Play ACPI device, IDs PNP0f13 (active) [ 0.573813] IOAPIC[0]: Set routing entry (0-6 -> 0x36 -> IRQ 6 Mode:0 Active:0 Dest:3) [ 0.575221] pnp 00:03: [dma 2] [ 0.575908] pnp 00:03: Plug and Play ACPI device, IDs PNP0700 (active) [ 0.576939] IOAPIC[0]: Set routing entry (0-7 -> 0x37 -> IRQ 7 Mode:0 Active:0 Dest:3) [ 0.578358] pnp 00:04: Plug and Play ACPI device, IDs PNP0400 (active) [ 0.579351] IOAPIC[0]: Set routing entry (0-4 -> 0x34 -> IRQ 4 Mode:0 Active:0 Dest:3) [ 0.580902] pnp 00:05: Plug and Play ACPI device, IDs PNP0501 (active) [ 0.581895] IOAPIC[0]: Set routing entry (0-3 -> 0x33 -> IRQ 3 Mode:0 Active:0 Dest:3) [ 0.583318] pnp 00:06: Plug and Play ACPI device, IDs PNP0501 (active) [ 0.584424] pnp: PnP ACPI: found 7 devices [ 0.585156] ACPI: bus type PNP unregistered [ 0.594239] pci_bus 0000:00: resource 4 [io 0x0000-0x0cf7] [ 0.595116] pci_bus 0000:00: resource 5 [io 0x0d00-0xffff] [ 0.595980] pci_bus 0000:00: resource 6 [mem 0x000a0000-0x000bffff] [ 0.596901] pci_bus 0000:00: resource 7 [mem 0x80000000-0xfebfffff] [ 0.597855] NET: Registered protocol family 2 [ 0.598798] TCP established hash table entries: 4096 (order: 3, 32768 bytes) [ 0.599815] TCP bind hash table entries: 4096 (order: 4, 65536 bytes) [ 0.600791] TCP: Hash tables configured (established 4096 bind 4096) [ 0.601757] TCP: reno registered [ 0.602395] UDP hash table entries: 256 (order: 1, 8192 bytes) [ 0.603310] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes) [ 0.604316] NET: Registered protocol family 1 [ 0.605263] RPC: Registered named UNIX socket transport module. [ 0.606136] RPC: Registered udp transport module. [ 0.606901] RPC: Registered tcp transport module. [ 0.607662] RPC: Registered tcp NFSv4.1 backchannel transport module