Commit fd2d2b19 authored by Al Viro's avatar Al Viro
Browse files

s390: get_user() should zero on failure 



Cc: stable@vger.kernel.org
Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent 22426465

arch/s390/include/asm/uaccess.h

+4 −4
Original line number Diff line number Diff line
@@ -266,28 +266,28 @@ int __put_user_bad(void) __attribute__((noreturn)); 
	__chk_user_ptr(ptr);					\

	switch (sizeof(*(ptr))) {				\

	case 1: {						\

		unsigned char __x;				\

		unsigned char __x = 0;				\

		__gu_err = __get_user_fn(&__x, ptr,		\

					 sizeof(*(ptr)));	\

		(x) = *(__force __typeof__(*(ptr)) *) &__x;	\

		break;						\

	};							\

	case 2: {						\

		unsigned short __x;				\

		unsigned short __x = 0;				\

		__gu_err = __get_user_fn(&__x, ptr,		\

					 sizeof(*(ptr)));	\

		(x) = *(__force __typeof__(*(ptr)) *) &__x;	\

		break;						\

	};							\

	case 4: {						\

		unsigned int __x;				\

		unsigned int __x = 0;				\

		__gu_err = __get_user_fn(&__x, ptr,		\

					 sizeof(*(ptr)));	\

		(x) = *(__force __typeof__(*(ptr)) *) &__x;	\

		break;						\

	};							\

	case 8: {						\

		unsigned long long __x;				\

		unsigned long long __x = 0;			\

		__gu_err = __get_user_fn(&__x, ptr,		\

					 sizeof(*(ptr)));	\

		(x) = *(__force __typeof__(*(ptr)) *) &__x;	\