early console in setup code [ 0.000000] Initializing cgroup subsys cpuset [ 0.000000] Linux version 3.16.0-rc2-00005-g53fcf10 (kbuild@lkp-hsx01) (gcc version 4.8.2 (Debian 4.8.2-18) ) #369 PREEMPT Fri Jul 4 09:03:30 CST 2014 [ 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] Notice: NX (Execute Disable) protection cannot be enabled: non-PAE kernel! [ 0.000000] SMBIOS 2.4 present. [ 0.000000] DMI: QEMU Standard PC (i440FX + PIIX, 1996), 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] e820: last_pfn = 0x13ffe max_arch_pfn = 0x100000 [ 0.000000] initial memory mapped: [mem 0x00000000-0x027fffff] [ 0.000000] Base memory trampoline at [8009b000] 9b000 size 16384 [ 0.000000] init_memory_mapping: [mem 0x00000000-0x000fffff] [ 0.000000] [mem 0x00000000-0x000fffff] page 4k [ 0.000000] init_memory_mapping: [mem 0x12000000-0x123fffff] [ 0.000000] [mem 0x12000000-0x123fffff] page 2M [ 0.000000] init_memory_mapping: [mem 0x10000000-0x11ffffff] [ 0.000000] [mem 0x10000000-0x11ffffff] page 2M [ 0.000000] init_memory_mapping: [mem 0x00100000-0x0fffffff] [ 0.000000] [mem 0x00100000-0x003fffff] page 4k [ 0.000000] [mem 0x00400000-0x0fffffff] page 2M [ 0.000000] init_memory_mapping: [mem 0x12400000-0x13ffdfff] [ 0.000000] [mem 0x12400000-0x13bfffff] page 2M [ 0.000000] [mem 0x13c00000-0x13ffdfff] page 4k [ 0.000000] BRK [0x02361000, 0x02361fff] PGTABLE [ 0.000000] RAMDISK: [mem 0x127ab000-0x13feffff] [ 0.000000] ACPI: Early table checksum verification disabled [ 0.000000] ACPI: RSDP 0x000F0D00 000014 (v00 BOCHS ) [ 0.000000] ACPI: RSDT 0x13FFFC2A 000034 (v01 BOCHS BXPCRSDT 00000001 BXPC 00000001) [ 0.000000] ACPI: FACP 0x13FFF1C0 000074 (v01 BOCHS BXPCFACP 00000001 BXPC 00000001) [ 0.000000] ACPI: DSDT 0x13FFE040 001180 (v01 BOCHS BXPCDSDT 00000001 BXPC 00000001) [ 0.000000] ACPI: FACS 0x13FFE000 000040 [ 0.000000] ACPI: SSDT 0x13FFF234 00093E (v01 BOCHS BXPCSSDT 00000001 BXPC 00000001) [ 0.000000] ACPI: APIC 0x13FFFB72 000080 (v01 BOCHS BXPCAPIC 00000001 BXPC 00000001) [ 0.000000] ACPI: HPET 0x13FFFBF2 000038 (v01 BOCHS BXPCHPET 00000001 BXPC 00000001) [ 0.000000] ACPI: Local APIC address 0xfee00000 [ 0.000000] mapped APIC to ffffb000 ( fee00000) [ 0.000000] 0MB HIGHMEM available. [ 0.000000] 319MB LOWMEM available. [ 0.000000] mapped low ram: 0 - 13ffe000 [ 0.000000] low ram: 0 - 13ffe000 [ 0.000000] kvm-clock: Using msrs 4b564d01 and 4b564d00 [ 0.000000] kvm-clock: cpu 0, msr 0:13ffd001, primary cpu clock [ 0.000000] BRK [0x02362000, 0x02362fff] PGTABLE [ 0.000000] Zone ranges: [ 0.000000] Normal [mem 0x00001000-0x13ffdfff] [ 0.000000] HighMem 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] Normal zone: 640 pages used for memmap [ 0.000000] Normal zone: 0 pages reserved [ 0.000000] Normal zone: 81820 pages, LIFO batch:15 [ 0.000000] Using APIC driver default [ 0.000000] ACPI: PM-Timer IO Port: 0x608 [ 0.000000] ACPI: Local APIC address 0xfee00000 [ 0.000000] mapped APIC to ffffb000 ( 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: NR_CPUS/possible_cpus limit of 1 reached. Processor 1/0x1 ignored. [ 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] mapped IOAPIC to ffffa000 (fec00000) [ 0.000000] nr_irqs_gsi: 40 [ 0.000000] KVM setup async PF for cpu 0 [ 0.000000] kvm-stealtime: cpu 0, msr 1bab7c0 [ 0.000000] e820: [mem 0x14000000-0xfeffbfff] available for PCI devices [ 0.000000] Booting paravirtualized kernel on KVM [ 0.000000] pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768 [ 0.000000] pcpu-alloc: [0] 0 [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 81180 [ 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/i386-randconfig-ha1-0704/linux-devel:devel-lkp-hsx01-i386-201407040014:53fcf10b90f01b8dbdaa9fd380ebe64a10ffbc78:bisect-linux5/.vmlinuz-53fcf10b90f01b8dbdaa9fd380ebe64a10ffbc78-20140704090344-2-ivb42 branch=linux-devel/devel-lkp-hsx01-i386-201407040014 BOOT_IMAGE=/kernel/i386-randconfig-ha1-0704/53fcf10b90f01b8dbdaa9fd380ebe64a10ffbc78/vmlinuz-3.16.0-rc2-00005-g53fcf10 drbd.minor_count=8 [ 0.000000] sysrq: sysrq always enabled. [ 0.000000] PID hash table entries: 2048 (order: 1, 8192 bytes) [ 0.000000] Dentry cache hash table entries: 65536 (order: 6, 262144 bytes) [ 0.000000] Inode-cache hash table entries: 32768 (order: 5, 131072 bytes) [ 0.000000] Initializing CPU#0 [ 0.000000] Initializing HighMem for node 0 (00000000:00000000) [ 0.000000] Memory: 279468K/327280K available (8136K kernel code, 862K rwdata, 3716K rodata, 536K init, 6536K bss, 47812K reserved, 0K highmem) [ 0.000000] virtual kernel memory layout: [ 0.000000] fixmap : 0xfff8d000 - 0xfffff000 ( 456 kB) [ 0.000000] pkmap : 0xff800000 - 0xffc00000 (4096 kB) [ 0.000000] vmalloc : 0x947fe000 - 0xff7fe000 (1712 MB) [ 0.000000] lowmem : 0x80000000 - 0x93ffe000 ( 319 MB) [ 0.000000] .init : 0x81c6e000 - 0x81cf4000 ( 536 kB) [ 0.000000] .data : 0x817f270c - 0x81c6c9c0 (4584 kB) [ 0.000000] .text : 0x81000000 - 0x817f270c (8137 kB) [ 0.000000] Checking if this processor honours the WP bit even in supervisor mode...Ok. [ 0.000000] SLUB: HWalign=128, Order=0-3, MinObjects=0, CPUs=1, Nodes=1 [ 0.000000] Preemptible hierarchical RCU implementation. [ 0.000000] NR_IRQS:2304 nr_irqs:256 16 [ 0.000000] CPU 0 irqstacks, hard=80092000 soft=80094000 [ 0.000000] console [ttyS0] enabled [ 0.000000] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar [ 0.000000] ... MAX_LOCKDEP_SUBCLASSES: 8 [ 0.000000] ... MAX_LOCK_DEPTH: 48 [ 0.000000] ... MAX_LOCKDEP_KEYS: 8191 [ 0.000000] ... CLASSHASH_SIZE: 4096 [ 0.000000] ... MAX_LOCKDEP_ENTRIES: 32768 [ 0.000000] ... MAX_LOCKDEP_CHAINS: 65536 [ 0.000000] ... CHAINHASH_SIZE: 32768 [ 0.000000] memory used by lock dependency info: 4895 kB [ 0.000000] per task-struct memory footprint: 1152 bytes [ 0.000000] ------------------------ [ 0.000000] | Locking API testsuite: [ 0.000000] ---------------------------------------------------------------------------- [ 0.000000] | spin |wlock |rlock |mutex | wsem | rsem | [ 0.000000] -------------------------------------------------------------------------- [ 0.000000] A-A deadlock:failed|failed| ok |failed|failed|failed| [ 0.000000] A-B-B-A deadlock:failed|failed| ok |failed|failed|failed| [ 0.000000] A-B-B-C-C-A deadlock:failed|failed| ok |failed|failed|failed| [ 0.000000] A-B-C-A-B-C deadlock:failed|failed| ok |failed|failed|failed| [ 0.000000] A-B-B-C-C-D-D-A deadlock:failed|failed| ok |failed|failed|failed| [ 0.000000] A-B-C-D-B-D-D-A deadlock:failed|failed| ok |failed|failed|failed| [ 0.000000] A-B-C-D-B-C-D-A deadlock:failed|failed| ok |failed|failed|failed| [ 0.000000] double unlock: ok | ok | ok | ok | ok | ok | [ 0.000000] initialize held: ok | ok | ok | ok | ok | ok | [ 0.000000] bad unlock order: ok | ok | ok | ok | ok | ok | [ 0.000000] -------------------------------------------------------------------------- [ 0.000000] recursive read-lock: | ok | |failed| [ 0.000000] recursive read-lock #2: | ok | |failed| [ 0.000000] mixed read-write-lock: |failed| |failed| [ 0.000000] mixed write-read-lock: |failed| |failed| [ 0.000000] -------------------------------------------------------------------------- [ 0.000000] hard-irqs-on + irq-safe-A/12:failed|failed| ok | [ 0.000000] soft-irqs-on + irq-safe-A/12:failed|failed| ok | [ 0.000000] hard-irqs-on + irq-safe-A/21:failed|failed| ok | [ 0.000000] soft-irqs-on + irq-safe-A/21:failed|failed| ok | [ 0.000000] sirq-safe-A => hirqs-on/12:failed|failed| ok | [ 0.000000] sirq-safe-A => hirqs-on/21:failed|failed| ok | [ 0.000000] hard-safe-A + irqs-on/12:failed|failed| ok | [ 0.000000] soft-safe-A + irqs-on/12:failed|failed| ok | [ 0.000000] hard-safe-A + irqs-on/21:failed|failed| ok | [ 0.000000] soft-safe-A + irqs-on/21:failed|failed| ok | [ 0.000000] hard-safe-A + unsafe-B #1/123:failed|failed| ok | [ 0.000000] soft-safe-A + unsafe-B #1/123:failed|failed| ok | [ 0.000000] hard-safe-A + unsafe-B #1/132:failed|failed| ok | [ 0.000000] soft-safe-A + unsafe-B #1/132:failed|failed| ok | [ 0.000000] hard-safe-A + unsafe-B #1/213:failed|failed| ok | [ 0.000000] soft-safe-A + unsafe-B #1/213:failed|failed| ok | [ 0.000000] hard-safe-A + unsafe-B #1/231:failed|failed| ok | [ 0.000000] soft-safe-A + unsafe-B #1/231:failed|failed| ok | [ 0.000000] hard-safe-A + unsafe-B #1/312:failed|failed| ok | [ 0.000000] soft-safe-A + unsafe-B #1/312:failed|failed| ok | [ 0.000000] hard-safe-A + unsafe-B #1/321:failed|failed| ok | [ 0.000000] soft-safe-A + unsafe-B #1/321:failed|failed| ok | [ 0.000000] hard-safe-A + unsafe-B #2/123:failed|failed| ok | [ 0.000000] soft-safe-A + unsafe-B #2/123:failed|failed| ok | [ 0.000000] hard-safe-A + unsafe-B #2/132:failed|failed| ok | [ 0.000000] soft-safe-A + unsafe-B #2/132:failed|failed| ok | [ 0.000000] hard-safe-A + unsafe-B #2/213:failed|failed| ok | [ 0.000000] soft-safe-A + unsafe-B #2/213:failed|failed| ok | [ 0.000000] hard-safe-A + unsafe-B #2/231:failed|failed| ok | [ 0.000000] soft-safe-A + unsafe-B #2/231:failed|failed| ok | [ 0.000000] hard-safe-A + unsafe-B #2/312:failed|failed| ok | [ 0.000000] soft-safe-A + unsafe-B #2/312:failed|failed| ok | [ 0.000000] hard-safe-A + unsafe-B #2/321:failed|failed| ok | [ 0.000000] soft-safe-A + unsafe-B #2/321:failed|failed| ok | [ 0.000000] hard-irq lock-inversion/123:failed|failed| ok | [ 0.000000] soft-irq lock-inversion/123:failed|failed| ok | [ 0.000000] hard-irq lock-inversion/132:failed|failed| ok | [ 0.000000] soft-irq lock-inversion/132:failed|failed| ok | [ 0.000000] hard-irq lock-inversion/213:failed|failed| ok | [ 0.000000] soft-irq lock-inversion/213:failed|failed| ok | [ 0.000000] hard-irq lock-inversion/231:failed|failed| ok | [ 0.000000] soft-irq lock-inversion/231:failed|failed| ok | [ 0.000000] hard-irq lock-inversion/312:failed|failed| ok | [ 0.000000] soft-irq lock-inversion/312:failed|failed| ok | [ 0.000000] hard-irq lock-inversion/321:failed|failed| ok | [ 0.000000] soft-irq lock-inversion/321:failed|failed| ok | [ 0.000000] hard-irq read-recursion/123: ok | [ 0.000000] soft-irq read-recursion/123: ok | [ 0.000000] hard-irq read-recursion/132: ok | [ 0.000000] soft-irq read-recursion/132: ok | [ 0.000000] hard-irq read-recursion/213: ok | [ 0.000000] soft-irq read-recursion/213: ok | [ 0.000000] hard-irq read-recursion/231: ok | [ 0.000000] soft-irq read-recursion/231: ok | [ 0.000000] hard-irq read-recursion/312: ok | [ 0.000000] soft-irq read-recursion/312: ok | [ 0.000000] hard-irq read-recursion/321: ok | [ 0.000000] soft-irq read-recursion/321: ok | [ 0.000000] -------------------------------------------------------------------------- [ 0.000000] | Wound/wait tests | [ 0.000000] --------------------- [ 0.000000] ww api failures: ok | ok | ok | [ 0.000000] ww contexts mixing:failed| ok | [ 0.000000] finishing ww context: ok | ok | ok | ok | [ 0.000000] locking mismatches: ok | ok | ok | [ 0.000000] EDEADLK handling: ok | ok | ok | ok | ok | ok | ok | ok | ok | ok | [ 0.000000] spinlock nest unlocked: ok | [ 0.000000] ----------------------------------------------------- [ 0.000000] |block | try |context| [ 0.000000] ----------------------------------------------------- [ 0.000000] context:failed| ok | ok | [ 0.000000] try:failed| ok |failed| [ 0.000000] block:failed| ok |failed| [ 0.000000] spinlock:failed| ok |failed| [ 0.000000] -------------------------------------------------------- [ 0.000000] 141 out of 253 testcases failed, as expected. | [ 0.000000] ---------------------------------------------------- [ 0.000000] hpet clockevent registered [ 0.000000] tsc: Detected 2693.506 MHz processor [ 0.020000] Calibrating delay loop (skipped) preset value.. 5387.01 BogoMIPS (lpj=26935060) [ 0.020000] pid_max: default: 4096 minimum: 301 [ 0.020000] ACPI: Core revision 20140424 [ 0.020000] ACPI: All ACPI Tables successfully acquired [ 0.020000] Security Framework initialized [ 0.020000] Yama: becoming mindful. [ 0.020000] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes) [ 0.020000] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes) [ 0.020227] ------------[ cut here ]------------ [ 0.020756] WARNING: CPU: 0 PID: 0 at kernel/cgroup.c:2988 cgroup_init_cftypes+0x7f/0x86() [ 0.021827] CPU: 0 PID: 0 Comm: swapper Not tainted 3.16.0-rc2-00005-g53fcf10 #369 [ 0.022644] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 [ 0.023510] 00000000 00000000 81b97f50 817e52a2 81b97f80 8103257a 81a73029 00000000 [ 0.024469] 00000000 81a79d73 00000bac 8106e0cc 8106e0cc 81bb29d8 81bb271c 00000000 [ 0.025427] 81b97f90 81032626 00000009 00000000 81b97fa4 8106e0cc 00000000 00020800 [ 0.026389] Call Trace: [ 0.026665] [<817e52a2>] dump_stack+0x16/0x18 [ 0.027162] [<8103257a>] warn_slowpath_common+0x6b/0x82 [ 0.027734] [<8106e0cc>] ? cgroup_init_cftypes+0x7f/0x86 [ 0.028322] [<8106e0cc>] ? cgroup_init_cftypes+0x7f/0x86 [ 0.028903] [<81032626>] warn_slowpath_null+0x1d/0x1f [ 0.029467] [<8106e0cc>] cgroup_init_cftypes+0x7f/0x86 [ 0.030015] [<81c8213c>] cgroup_init+0x15/0x1a9 [ 0.030518] [<810f123b>] ? proc_mkdir+0x14/0x16 [ 0.031030] [<81c6eb40>] start_kernel+0x41c/0x453 [ 0.031546] [<81c6e4da>] ? set_init_arg+0x49/0x49 [ 0.032074] [<81c6e2cb>] i386_start_kernel+0x79/0x7d [ 0.032622] ---[ end trace f7c9b96c96ca301f ]--- [ 0.033214] Initializing cgroup subsys perf_event [ 0.033728] Initializing cgroup subsys debug [ 0.034235] ------------[ cut here ]------------ [ 0.034752] WARNING: CPU: 0 PID: 0 at arch/x86/kernel/cpu/common.c:1422 warn_pre_alternatives+0x22/0x24() [ 0.035964] You're using static_cpu_has before alternatives have run! [ 0.036671] CPU: 0 PID: 0 Comm: swapper Tainted: G W 3.16.0-rc2-00005-g53fcf10 #369 [ 0.037613] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 [ 0.040000] 81b97e88 81b97e88 81b97e48 817e52a2 81b97e78 8103257a 81a6af06 81b97ea4 [ 0.040000] 00000000 81a6ae52 0000058e 8100c71b 8100c71b 81b97f54 00000000 00000000 [ 0.040000] 81b97e90 810325d8 00000009 81b97e88 81a6af06 81b97ea4 81b97ea4 8100c71b [ 0.040000] Call Trace: [ 0.040000] [<817e52a2>] dump_stack+0x16/0x18 [ 0.040000] [<8103257a>] warn_slowpath_common+0x6b/0x82 [ 0.040000] [<8100c71b>] ? warn_pre_alternatives+0x22/0x24 [ 0.040000] [<8100c71b>] ? warn_pre_alternatives+0x22/0x24 [ 0.040000] [<810325d8>] warn_slowpath_fmt+0x2e/0x30 [ 0.040000] [<8100c71b>] warn_pre_alternatives+0x22/0x24 [ 0.040000] [<81021f8c>] __do_page_fault+0x7f/0x38a [ 0.040000] [<810f7532>] ? kernfs_activate+0x91/0xa2 [ 0.040000] [<810f7628>] ? kernfs_add_one+0xe5/0x110 [ 0.040000] [<810f7459>] ? kernfs_new_node+0x32/0x3d [ 0.040000] [<810f768c>] ? kernfs_create_dir_ns+0x39/0x54 [ 0.040000] [<810f8e5d>] ? sysfs_create_dir_ns+0x3c/0x6a [ 0.040000] [<810209cb>] ? kvm_read_and_reset_pf_reason+0x1f/0x1f [ 0.040000] [<81022348>] do_page_fault+0x25/0x29 [ 0.040000] [<810209ee>] do_async_page_fault+0x23/0x49 [ 0.040000] [<817f1ced>] error_code+0x65/0x6c [ 0.040000] [<81376bf6>] ? strchr+0xa/0x1e [ 0.040000] [<810ca0bc>] register_filesystem+0x13/0x5e [ 0.040000] [<81c8228e>] cgroup_init+0x167/0x1a9 [ 0.040000] [<81c6eb40>] start_kernel+0x41c/0x453 [ 0.040000] [<81c6e4da>] ? set_init_arg+0x49/0x49 [ 0.040000] [<81c6e2cb>] i386_start_kernel+0x79/0x7d [ 0.040000] ---[ end trace f7c9b96c96ca3020 ]--- [ 0.040000] BUG: unable to handle kernel NULL pointer dereference at (null) [ 0.040000] IP: [<81376bf6>] strchr+0xa/0x1e [ 0.040000] *pde = 00000000 [ 0.040000] Oops: 0000 [#1] PREEMPT [ 0.040000] CPU: 0 PID: 0 Comm: swapper Tainted: G W 3.16.0-rc2-00005-g53fcf10 #369 [ 0.040000] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 [ 0.040000] task: 81b9e374 ti: 81b96000 task.ti: 81b96000 [ 0.040000] EIP: 0060:[<81376bf6>] EFLAGS: 00210286 CPU: 0 [ 0.040000] EIP is at strchr+0xa/0x1e [ 0.040000] EAX: 00002e2e EBX: 81bb2a28 ECX: 00000000 EDX: 0000002e [ 0.040000] ESI: 00000000 EDI: 00000000 EBP: 81b97f94 ESP: 81b97f90 [ 0.040000] DS: 007b ES: 007b FS: 0000 GS: 00e0 SS: 0068 [ 0.040000] CR0: 8005003b CR2: 00000000 CR3: 01cf7000 CR4: 00000690 [ 0.040000] Stack: [ 0.040000] 0000000c 81b97fa4 810ca0bc 81bb1ef0 0000000c 81b97fc4 81c8228e 00000002 [ 0.040000] 000000d0 81bb3560 00000000 00020800 81cf8800 81b97fe8 81c6eb40 000002e7 [ 0.040000] ffffffff ffffffff 81c6e4da 81cbc390 611cf1c9 00000800 81b97ff8 81c6e2cb [ 0.040000] Call Trace: [ 0.040000] [<810ca0bc>] register_filesystem+0x13/0x5e [ 0.040000] [<81c8228e>] cgroup_init+0x167/0x1a9 [ 0.040000] [<81c6eb40>] start_kernel+0x41c/0x453 [ 0.040000] [<81c6e4da>] ? set_init_arg+0x49/0x49 [ 0.040000] [<81c6e2cb>] i386_start_kernel+0x79/0x7d [ 0.040000] Code: c3 55 89 e5 57 89 d7 56 89 c6 49 78 08 ac ae 75 08 84 c0 75 f5 31 c0 eb 04 19 c0 0c 01 5e 5f 5d c3 55 89 e5 56 89 c6 89 d0 88 c4 38 e0 74 09 84 c0 75 f7 be 01 00 00 00 89 f0 48 5e 5d c3 55 [ 0.040000] EIP: [<81376bf6>] strchr+0xa/0x1e SS:ESP 0068:81b97f90 [ 0.040000] CR2: 0000000000000000 [ 0.040000] ---[ end trace f7c9b96c96ca3021 ]--- [ 0.040000] Kernel panic - not syncing: Attempted to kill the idle task! [ 0.040000] Rebooting in 10 seconds.. Elapsed time: 10 qemu-system-x86_64 -cpu kvm64 -enable-kvm -kernel /kernel/i386-randconfig-ha1-0704/53fcf10b90f01b8dbdaa9fd380ebe64a10ffbc78/vmlinuz-3.16.0-rc2-00005-g53fcf10 -append '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/i386-randconfig-ha1-0704/linux-devel:devel-lkp-hsx01-i386-201407040014:53fcf10b90f01b8dbdaa9fd380ebe64a10ffbc78:bisect-linux5/.vmlinuz-53fcf10b90f01b8dbdaa9fd380ebe64a10ffbc78-20140704090344-2-ivb42 branch=linux-devel/devel-lkp-hsx01-i386-201407040014 BOOT_IMAGE=/kernel/i386-randconfig-ha1-0704/53fcf10b90f01b8dbdaa9fd380ebe64a10ffbc78/vmlinuz-3.16.0-rc2-00005-g53fcf10 drbd.minor_count=8' -initrd /kernel-tests/initrd/quantal-core-i386.cgz -m 320 -smp 2 -net nic,vlan=1,model=e1000 -net user,vlan=1 -boot order=nc -no-reboot -watchdog i6300esb -rtc base=localtime -pidfile /dev/shm/kboot/pid-quantal-ivb42-17 -serial file:/dev/shm/kboot/serial-quantal-ivb42-17 -daemonize -display none -monitor null