early console in setup code
Probing EDD (edd=off to disable)... ok
early console in decompress_kernel
KASLR using RDTSC...

Decompressing Linux... Parsing ELF... Performing relocations... done.
Booting the kernel.
[    0.000000] Initializing cgroup subsys cpuset
[    0.000000] Initializing cgroup subsys cpu
[    0.000000] Linux version 3.12.0-rc4-00008-g6e6a493 (wfg@bee) (gcc version 4.8.1 (Debian 4.8.1-3) ) #614 SMP Mon Jan 13 02:25:31 CST 2014
[    0.000000] Command line: hung_task_panic=1 earlyprintk=ttyS0,115200 debug apic=debug sysrq_always_enabled panic=10  prompt_ramdisk=0 console=ttyS0,115200 console=tty0 vga=normal  root=/dev/ram0 rw link=/kernel-tests/run-queue/kvm/x86_64-randconfig-s1-01101738/next:master:6e6a4932b0f569b1a5bb4fcbf5dde1b1a42f01bb:bisect-mm/.vmlinuz-6e6a4932b0f569b1a5bb4fcbf5dde1b1a42f01bb-20140113022701-571-roam branch=next/master BOOT_IMAGE=/kernel/x86_64-randconfig-s1-01101738/6e6a4932b0f569b1a5bb4fcbf5dde1b1a42f01bb/vmlinuz-3.12.0-rc4-00008-g6e6a493
[    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 0x0000000000100000-0x000000000fffdfff] usable
[    0.000000] BIOS-e820: [mem 0x000000000fffe000-0x000000000fffffff] 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] 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 = 0xfffe 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] 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 [0x0c486000, 0x0c486fff] PGTABLE
[    0.000000] BRK [0x0c487000, 0x0c487fff] PGTABLE
[    0.000000] BRK [0x0c488000, 0x0c488fff] PGTABLE
PANIC: early exception 0e rip 10:ffffffff8ae04c6e error 0 cr2 ffffffff81972b28
[    0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 3.12.0-rc4-00008-g6e6a493 #614
PANIC: early exception 0e rip 10:ffffffff8ae04f22 error 0 cr2 ffffffff81972b28

BUG: kernel boot hang
Elapsed time: 610
qemu-system-x86_64 -cpu kvm64 -enable-kvm -kernel /kernel/x86_64-randconfig-s1-01101738/6e6a4932b0f569b1a5bb4fcbf5dde1b1a42f01bb/vmlinuz-3.12.0-rc4-00008-g6e6a493 -append 'hung_task_panic=1 earlyprintk=ttyS0,115200 debug apic=debug sysrq_always_enabled panic=10  prompt_ramdisk=0 console=ttyS0,115200 console=tty0 vga=normal  root=/dev/ram0 rw link=/kernel-tests/run-queue/kvm/x86_64-randconfig-s1-01101738/next:master:6e6a4932b0f569b1a5bb4fcbf5dde1b1a42f01bb:bisect-mm/.vmlinuz-6e6a4932b0f569b1a5bb4fcbf5dde1b1a42f01bb-20140113022701-571-roam branch=next/master BOOT_IMAGE=/kernel/x86_64-randconfig-s1-01101738/6e6a4932b0f569b1a5bb4fcbf5dde1b1a42f01bb/vmlinuz-3.12.0-rc4-00008-g6e6a493'  -initrd /kernel-tests/initrd/yocto-minimal-x86_64.cgz -m 256M -smp 2 -net nic,vlan=1,model=e1000 -net user,vlan=1,hostfwd=tcp::17854-:22 -boot order=nc -no-reboot -watchdog i6300esb -rtc base=localtime -drive file=/fs/LABEL=KVM/disk0-yocto-roam-17,media=disk,if=virtio -drive file=/fs/LABEL=KVM/disk1-yocto-roam-17,media=disk,if=virtio -drive file=/fs/LABEL=KVM/disk2-yocto-roam-17,media=disk,if=virtio -drive file=/fs/LABEL=KVM/disk3-yocto-roam-17,media=disk,if=virtio -drive file=/fs/LABEL=KVM/disk4-yocto-roam-17,media=disk,if=virtio -drive file=/fs/LABEL=KVM/disk5-yocto-roam-17,media=disk,if=virtio -pidfile /dev/shm/kboot/pid-yocto-roam-17 -serial file:/dev/shm/kboot/serial-yocto-roam-17 -daemonize -display none -monitor null