android6.0 编译boot.img烧写进nexus 6启动机器人倒地

[kernel] android-msm-shamu-3.10-lollipop-mr1

编译

export PATH=/home/fire/workspace/nexus6/prebuilts/gcc/linux-x86/arm/arm-eabi-4.8/bin:$PATH
export ARCH=arm
export SUBARCH=arm
export CROSS_COMPILE=arm-eabi-

make shamu_defconfig

make -j2


编译成功后在android 6.0编译

cp kernel/msm/arch/arm/boot/zImage-dtb  device/moto/shamu-kernel/

make bootimage -j2

成功后烧进nexus 6 启动后出现google **后机器人倒地

如果用device/moto/shamu-kernel/目录下默认的zImage-dtb生成的boot.img烧进手机是可以正常启动的，是我内核编译有问题吗？求大神指导，谢谢！！！