include/linux/instrumented.h

102  * @to: destination address
104  * @n: number of bytes to copy
106  * Instrument reads from kernel memory, that are due to copy_to_user (and
110 instrument_copy_to_user(void __user *to, const void *from, unsigned long n)
114 	kmsan_copy_to_user(to, from, n, 0);
119  * @to: destination address
121  * @n: number of bytes to copy
123  * Instrument writes to kernel memory, that are due to copy_from_user (and
127 instrument_copy_from_user_before(const void *to, const void __user *from, unsigned long n)
129 	kasan_check_write(to, n);
130 	kcsan_check_write(to, n);
135  * @to: destination address
137  * @n: number of bytes to copy
140  * Instrument writes to kernel memory, that are due to copy_from_user (and
144 instrument_copy_from_user_after(const void *to, const void __user *from,
147 	kmsan_unpoison_memory(to, n - left);
152  * @to: destination address
154  * @n: number of bytes to copy
159 static __always_inline void instrument_memcpy_before(void *to, const void *from,
162 	kasan_check_write(to, n);
164 	kcsan_check_write(to, n);
170  * @to: destination address
172  * @n: number of bytes to copy
178 static __always_inline void instrument_memcpy_after(void *to, const void *from,
182 	kmsan_memmove(to, from, n - left);
186  * instrument_get_user() - add instrumentation to get_user()-like macros
187  * @to: destination variable, may not be address-taken
193 #define instrument_get_user(to)				\
195 	u64 __tmp = (u64)(to);				\
197 	to = __tmp;					\
202  * instrument_put_user() - add instrumentation to put_user()-like macros
204  * @ptr: userspace pointer to copy to
205  * @size: number of bytes to copy