From: Al Viro Date: Mon, 22 Aug 2016 02:00:54 +0000 (-0400) Subject: s390: get_user() should zero on failure X-Git-Tag: v4.8-rc7~23^2~10 X-Git-Url: http://git.cascardo.info/?p=cascardo%2Flinux.git;a=commitdiff_plain;h=fd2d2b191fe75825c4c7a6f12f3fef35aaed7dd7;hp=224264657b8b228f949b42346e09ed8c90136a8e s390: get_user() should zero on failure Cc: stable@vger.kernel.org Signed-off-by: Al Viro --- diff --git a/arch/s390/include/asm/uaccess.h b/arch/s390/include/asm/uaccess.h index 9b49cf1daa8f..2c5d292ff752 100644 --- a/arch/s390/include/asm/uaccess.h +++ b/arch/s390/include/asm/uaccess.h @@ -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; \