1. 将/prebuild/gcc/linux-x86/arm/arm-linux-androideabi-4.6/bin/arm-linux-androideabi-gdb 拷贝到/usr/local/bin下
2. 进入out/target/product/工程名xxx/obj/KERNEL_OBJ 目录，找到文件vmlinux
3. 执行arm-linux-androideabi-gdb vmlinux，进入gdb调试界面
4. 输入 list * 函数名+行号，会显示出错对应的文件和行号
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