4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Al Viro <v...@zeniv.linux.org.uk>

commit e69d700535ac43a18032b3c399c69bf4639e89a2 upstream.

Signed-off-by: Al Viro <v...@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 arch/mips/include/asm/uaccess.h |    3 +++
 1 file changed, 3 insertions(+)

--- a/arch/mips/include/asm/uaccess.h
+++ b/arch/mips/include/asm/uaccess.h
@@ -14,6 +14,7 @@
 #include <linux/kernel.h>
 #include <linux/errno.h>
 #include <linux/thread_info.h>
+#include <linux/string.h>
 #include <asm/asm-eva.h>
 
 /*
@@ -1170,6 +1171,8 @@ extern size_t __copy_in_user_eva(void *_
                        __cu_len = __invoke_copy_from_user(__cu_to,     \
                                                           __cu_from,   \
                                                           __cu_len);   \
+               } else {                                                \
+                       memset(__cu_to, 0, __cu_len);                   \
                }                                                       \
        }                                                               \
        __cu_len;                                                       \


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