--- a/fs/binfmt_elf.c	2012-12-08 21:23:48.238319253 +0100
+++ a/fs/binfmt_elf.c	2012-12-08 21:24:59.032340545 +0100
@@ -781,6 +781,9 @@ 
 		switch (xattr_value[i]) {
 		default:
 			return ~0UL;
+		case '-':
+			/* ignore not set flag */
+			break;
 
 #define parse_flag(option1, option2, flag)			\
 		case option1:					\