| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.4 098/118] s390: get_user() should zero on failure | Date | Thu, 22 Sep 2016 19:29:58 +0200 |
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4.4-stable review patch. If anyone has any objections, please let me know.
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From: Al Viro <viro@zeniv.linux.org.uk>
commit fd2d2b191fe75825c4c7a6f12f3fef35aaed7dd7 upstream.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- arch/s390/include/asm/uaccess.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
--- a/arch/s390/include/asm/uaccess.h +++ b/arch/s390/include/asm/uaccess.h @@ -215,28 +215,28 @@ int __put_user_bad(void) __attribute__(( __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; \
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