1 /* Inject a hwpoison memory failure on a arbitary pfn */
2 #include <linux/module.h>
3 #include <linux/debugfs.h>
4 #include <linux/kernel.h>
7 static struct dentry *hwpoison_dir, *corrupt_pfn;
9 static int hwpoison_inject(void *data, u64 val)
11 if (!capable(CAP_SYS_ADMIN))
13 printk(KERN_INFO "Injecting memory failure at pfn %Lx\n", val);
14 return __memory_failure(val, 18, 0);
17 DEFINE_SIMPLE_ATTRIBUTE(hwpoison_fops, NULL, hwpoison_inject, "%lli\n");
19 static void pfn_inject_exit(void)
22 debugfs_remove_recursive(hwpoison_dir);
25 static int pfn_inject_init(void)
27 hwpoison_dir = debugfs_create_dir("hwpoison", NULL);
28 if (hwpoison_dir == NULL)
30 corrupt_pfn = debugfs_create_file("corrupt-pfn", 0600, hwpoison_dir,
31 NULL, &hwpoison_fops);
32 if (corrupt_pfn == NULL) {
39 module_init(pfn_inject_init);
40 module_exit(pfn_inject_exit);
41 MODULE_LICENSE("GPL");