fix unsafe_put_user()



__put_user_size() relies upon its first argument having the same type as what
the second one points to; the only other user makes sure of that and
unsafe_put_user() should do the same.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

parent 2ea659a9

arch/x86/include/asm/uaccess.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -703,7 +703,7 @@ extern struct movsl_mask {
		#define unsafe_put_user(x, ptr, err_label) \
		do { \
		int __pu_err; \
		__put_user_size((x), (ptr), sizeof(*(ptr)), __pu_err, -EFAULT); \
		__put_user_size((__typeof__((ptr)))(x), (ptr), sizeof((ptr)), __pu_err, -EFAULT); \
		if (unlikely(__pu_err)) goto err_label; \
		} while (0)