我想加载模块和驱动程序。 最初有类似以下错误：
CONFIG_UNWINDER_ORC = y, please install libelf-dev, libelf-devel or elfutils-libelf-devel
因此，我按照此处所述进行了操作：
https://askubuntu.com/questions/1070066/how-to-install-libelf-devel-or-elfutils-libelf-devel-in-ubuntu-18-04-hp-laptop-a
但是，我仍然无法创建ko文件。
这是错误：
make -C /lib/modules/4.15.0-48-generic/build M=/home/ex6 modules
make[1]: Entering directory '/usr/src/linux-headers-4.15.0-48-generic'
make[1]: Warning: File '/home/ex6/.cache.mk' has modification time 0.56 s in the future
make[2]: Warning: File '/home/ex6/.cache.mk' has modification time 0.52 s in the future
CC [M] /home/ex6/chardev.o
/home/ex6/chardev.o: Operation not permitted
/home/ex6/chardev.o: failed
scripts/Makefile.build:337: recipe for target '/home/ex6/chardev.o' failed
make[2]: *** [/home/ex6/chardev.o] Error 1
Makefile:1552: recipe for target '_module_/home/ex6' failed
make[1]: *** [_module_/home/ex6] Error 2
make[1]: Leaving directory '/usr/src/linux-headers-4.15.0-48-generic'
Makefile:6: recipe for target 'all' failed
make: *** [all] Error 2
这是Makefile：
obj-m := chardev.o
KDIR := /lib/modules/$(shell uname -r)/build
PWD := $(shell pwd)
all:
$(MAKE) -C $(KDIR) M=$(PWD) modules
clean:
$(MAKE) -C $(KDIR) M=$(PWD) clean