misc/lkdtm/usercopy.c

57 	unsigned long user_addr;
81 	user_addr = vm_mmap(NULL, 0, PAGE_SIZE,
84 	if (user_addr >= TASK_SIZE) {
91 		if (copy_to_user((void __user *)user_addr, good_stack,
98 		if (copy_to_user((void __user *)user_addr, bad_stack,
112 		if (copy_from_user(good_stack, (void __user *)user_addr,
119 		if (copy_from_user(bad_stack, (void __user *)user_addr,
127 	vm_munmap(user_addr, PAGE_SIZE);
136 	unsigned long user_addr;
149 	user_addr = vm_mmap(NULL, 0, PAGE_SIZE,
152 	if (user_addr >= TASK_SIZE) {
160 	test_user_addr = (void __user *)(user_addr + 16);
192 	vm_munmap(user_addr, PAGE_SIZE);
206 	unsigned char __user *user_addr;
232 	user_addr = (void __user *)user_alloc;
242 		if (copy_to_user(user_addr, buf + offset, size)) {
248 		if (copy_to_user(user_addr, buf + offset - 1, size)) {
254 		if (copy_from_user(buf + offset, user_addr, size)) {
260 		if (copy_from_user(buf + offset - 1, user_addr, size)) {
313 	unsigned long user_addr;
315 	user_addr = vm_mmap(NULL, 0, PAGE_SIZE,
318 	if (user_addr >= TASK_SIZE) {
325 	if (copy_to_user((void __user *)user_addr, test_text,
333 	if (copy_to_user((void __user *)user_addr, vm_mmap,
342 	vm_munmap(user_addr, PAGE_SIZE);