linux 内核 dump_page

操作系统：openEuler 22.03 LTS

内核版本 5.10.0-60.18.0.50.oe2203.x86_64

#include 
#include 
#include 
#include 
//#include 
#include 
static int *p = NULL;
 
static int __init kmalloc_test_init(void)
{
	//p = kmalloc(PAGE_SIZE, GFP_KERNEL);		
	//printk(KERN_INFO "address: %p\n", p);
	
	//p = kmalloc_array(1025, 4 * 1024, GFP_KERNEL);
	struct page *page;
	p = kzalloc(4 * 1024 * 1024, GFP_KERNEL);
	page = virt_to_page(p);
	printk(KERN_INFO "address: %p\n", p);
	dump_page(page, "hyq - test");
	return 0;
}
 
static void __exit kmalloc_test_exit(void)
{
	printk("exit\n");
	if (p != NULL)
		kfree(p);
}
 
module_init(kmalloc_test_init);
module_exit(kmalloc_test_exit);
MODULE_LICENSE("GPL");

Makefile

obj-m+=kmalloc_test.o
CONFIG_MODULE_SIG=n
all:
	make -C /lib/modules/$(shell uname -r)/build/ M=$(PWD) modules
clean:
	make -C /lib/modules/$(shell uname -r)/build/ M=$(PWD) clean

运行结果：