42 static bool is_zeroed(void *from, size_t size)  in is_zeroed()  argument
44 	return memchr_inv(from, 0x0, size) == NULL;  in is_zeroed()
47 static int test_check_nonzero_user(char *kmem, char __user *umem, size_t size)  in test_check_nonzero_user()  argument
52 	if (test(size < 2 * PAGE_SIZE, "buffer too small"))  in test_check_nonzero_user()
57 	 * effectively. We also don't want to make the size we scan too large,  in test_check_nonzero_user()
61 	size = 1024;  in test_check_nonzero_user()
62 	start = PAGE_SIZE - (size / 2);  in test_check_nonzero_user()
67 	zero_start = size / 4;  in test_check_nonzero_user()
68 	zero_end = size - zero_start;  in test_check_nonzero_user()
81 	memset(kmem, 0x0, size);  in test_check_nonzero_user()
84 	for (i = zero_end; i < size; i += 2)  in test_check_nonzero_user()
87 	ret |= test(copy_to_user(umem, kmem, size),  in test_check_nonzero_user()
90 	for (start = 0; start <= size; start++) {  in test_check_nonzero_user()
91 		for (end = start; end <= size; end++) {  in test_check_nonzero_user()
106 				      size_t size)  in test_copy_struct_from_user()  argument
112 	umem_src = kmalloc(size, GFP_KERNEL);  in test_copy_struct_from_user()
117 	expected = kmalloc(size, GFP_KERNEL);  in test_copy_struct_from_user()
123 	memset(umem_src, 0x3e, size);  in test_copy_struct_from_user()
124 	ret |= test(copy_to_user(umem, umem_src, size),  in test_copy_struct_from_user()
128 	ksize = size;  in test_copy_struct_from_user()
129 	usize = size;  in test_copy_struct_from_user()
133 	memset(kmem, 0x0, size);  in test_copy_struct_from_user()
140 	ksize = size;  in test_copy_struct_from_user()
141 	usize = size / 2;  in test_copy_struct_from_user()
146 	memset(kmem, 0x0, size);  in test_copy_struct_from_user()
153 	ksize = size / 2;  in test_copy_struct_from_user()
154 	usize = size;  in test_copy_struct_from_user()
156 	memset(kmem, 0x0, size);  in test_copy_struct_from_user()
161 	ksize = size / 2;  in test_copy_struct_from_user()
162 	usize = size;  in test_copy_struct_from_user()
168 	memset(kmem, 0x0, size);  in test_copy_struct_from_user()
222 #define test_legit(size, check)						  \  in test_user_copy_init()  argument
224 		val_##size = check;					  \  in test_user_copy_init()
225 		ret |= test(put_user(val_##size, (size __user *)usermem), \  in test_user_copy_init()
226 		    "legitimate put_user (" #size ") failed");		  \  in test_user_copy_init()
227 		val_##size = 0;						  \  in test_user_copy_init()
228 		ret |= test(get_user(val_##size, (size __user *)usermem), \  in test_user_copy_init()
229 		    "legitimate get_user (" #size ") failed");		  \  in test_user_copy_init()
230 		ret |= test(val_##size != check,			  \  in test_user_copy_init()
231 		    "legitimate get_user (" #size ") failed to do copy"); \  in test_user_copy_init()
232 		if (val_##size != check) {				  \  in test_user_copy_init()
234 				(unsigned long long)val_##size,		  \  in test_user_copy_init()
287 #define test_illegal(size, check)					    \  in test_user_copy_init()  argument
289 		val_##size = (check);					    \  in test_user_copy_init()
290 		ret |= test(!get_user(val_##size, (size __user *)kmem),	    \  in test_user_copy_init()
291 		    "illegal get_user (" #size ") passed");		    \  in test_user_copy_init()
292 		ret |= test(val_##size != (size)0,			    \  in test_user_copy_init()
293 		    "zeroing failure for illegal get_user (" #size ")");    \  in test_user_copy_init()
294 		if (val_##size != (size)0) {				    \  in test_user_copy_init()
296 				(unsigned long long)val_##size);	    \  in test_user_copy_init()
298 		ret |= test(!put_user(val_##size, (size __user *)kmem),	    \  in test_user_copy_init()
299 		    "illegal put_user (" #size ") passed");		    \  in test_user_copy_init()