early console in setup code
early console in decompress_kernel
KASLR using RDTSC...

Decompressing Linux... Parsing ELF... Performing relocations... done.
Booting the kernel.
[    0.000000] Initializing cgroup subsys cpu
[    0.000000] Linux version 3.12.0-rc4-00005-g82fa963 (kbuild@lkp-ib04) (gcc version 4.9.1 (Debian 4.9.1-11) ) #1 SMP Sat Sep 20 20:07:43 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=-1 softlockup_panic=1 nmi_watchdog=panic oops=panic load_ramdisk=2 prompt_ramdisk=0 console=ttyS0,115200 console=tty0 vga=normal  root=/dev/ram0 rw link=/kbuild-tests/run-queue/kvm/x86_64-randconfig-ib1-09191856/next:master:82fa9637a2ba285bcc7c5050c73010b2c1b3d803:bisect-linux-5/.vmlinuz-82fa9637a2ba285bcc7c5050c73010b2c1b3d803-20140920200809-480-ivb41 branch=next/master BOOT_IMAGE=/kernel/x86_64-randconfig-ib1-09191856/82fa9637a2ba285bcc7c5050c73010b2c1b3d803/vmlinuz-3.12.0-rc4-00005-g82fa963 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 0x0000000000100000-0x0000000013fdffff] usable
[    0.000000] BIOS-e820: [mem 0x0000000013fe0000-0x0000000013ffffff] 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] 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 = 0x13fe0 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] 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 0x000f0ed0-0x000f0edf] mapped at [ffff8800000f0ed0]
[    0.000000]   mpc: f0ee0-f0fb0
[    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 [0x06bd4000, 0x06bd4fff] PGTABLE
[    0.000000] BRK [0x06bd5000, 0x06bd5fff] PGTABLE
[    0.000000] BRK [0x06bd6000, 0x06bd6fff] PGTABLE
PANIC: early exception 0e rip 10:ffffffff842122df error 0 cr2 ffffffff829c9798
[    0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 3.12.0-rc4-00005-g82fa963 #1
PANIC: early exception 0e rip 10:ffffffff842126f6 error 0 cr2 ffffffff829c9798

BUG: kernel boot hang
Elapsed time: 305
qemu-system-x86_64 -cpu kvm64 -enable-kvm -kernel /kernel/x86_64-randconfig-ib1-09191856/82fa9637a2ba285bcc7c5050c73010b2c1b3d803/vmlinuz-3.12.0-rc4-00005-g82fa963 -append 'hung_task_panic=1 earlyprintk=ttyS0,115200 debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100 panic=-1 softlockup_panic=1 nmi_watchdog=panic oops=panic load_ramdisk=2 prompt_ramdisk=0 console=ttyS0,115200 console=tty0 vga=normal  root=/dev/ram0 rw link=/kbuild-tests/run-queue/kvm/x86_64-randconfig-ib1-09191856/next:master:82fa9637a2ba285bcc7c5050c73010b2c1b3d803:bisect-linux-5/.vmlinuz-82fa9637a2ba285bcc7c5050c73010b2c1b3d803-20140920200809-480-ivb41 branch=next/master BOOT_IMAGE=/kernel/x86_64-randconfig-ib1-09191856/82fa9637a2ba285bcc7c5050c73010b2c1b3d803/vmlinuz-3.12.0-rc4-00005-g82fa963 drbd.minor_count=8'  -initrd /kernel-tests/initrd/yocto-minimal-x86_64.cgz -m 320 -smp 1 -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-yocto-ivb41-24 -serial file:/dev/shm/kboot/serial-yocto-ivb41-24 -daemonize -display none -monitor null