BUG: kernel early hang without any printk output
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/i386-randconfig-hsxa0-11280759/next:master:34bf7903e195347898a225220357f3a49dd65e7e:bisect-linux-2/.vmlinuz-34bf7903e195347898a225220357f3a49dd65e7e-20141128125733-65-client4 branch=next/master BOOT_IMAGE=/kernel/i386-randconfig-hsxa0-11280759/34bf7903e195347898a225220357f3a49dd65e7e/vmlinuz-3.18.0-rc6-00200-g34bf790 drbd.minor_count=8
Early hang kernel: vmlinuz-3.18.0-rc6-00200-g34bf790 3.18.0-rc6-00200-g34bf790 #15
Elapsed time: 95
qemu-system-x86_64 -cpu kvm64 -enable-kvm -kernel /kernel/i386-randconfig-hsxa0-11280759/34bf7903e195347898a225220357f3a49dd65e7e/vmlinuz-3.18.0-rc6-00200-g34bf790 -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/i386-randconfig-hsxa0-11280759/next:master:34bf7903e195347898a225220357f3a49dd65e7e:bisect-linux-2/.vmlinuz-34bf7903e195347898a225220357f3a49dd65e7e-20141128125733-65-client4 branch=next/master BOOT_IMAGE=/kernel/i386-randconfig-hsxa0-11280759/34bf7903e195347898a225220357f3a49dd65e7e/vmlinuz-3.18.0-rc6-00200-g34bf790 drbd.minor_count=8'  -initrd /kernel-tests/initrd/yocto-minimal-i386.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-client4-11 -serial file:/dev/shm/kboot/serial-yocto-client4-11 -daemonize -display none -monitor null