--- zzzz-none-000/linux-3.10.107/arch/mips/kernel/binfmt_elfo32.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/arch/mips/kernel/binfmt_elfo32.c	2021-02-04 17:41:59.000000000 +0000
@@ -28,6 +28,18 @@
 typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
 
 /*
+ * In order to be sure that we don't attempt to execute an O32 binary which
+ * requires 64 bit FP (FR=1) on a system which does not support it we refuse
+ * to execute any binary which has bits specified by the following macro set
+ * in its ELF header flags.
+ */
+#ifdef CONFIG_MIPS_O32_FP64_SUPPORT
+# define __MIPS_O32_FP64_MUST_BE_ZERO	0
+#else
+# define __MIPS_O32_FP64_MUST_BE_ZERO	EF_MIPS_FP64
+#endif
+
+/*
  * This is used to ensure we don't load something for the wrong architecture.
  */
 #define elf_check_arch(hdr)						\
@@ -44,6 +56,8 @@
 	if (((__h->e_flags & EF_MIPS_ABI) != 0) &&			\
 	    ((__h->e_flags & EF_MIPS_ABI) != EF_MIPS_ABI_O32))		\
 		__res = 0;						\
+	if (__h->e_flags & __MIPS_O32_FP64_MUST_BE_ZERO)		\
+		__res = 0;						\
 									\
 	__res;								\
 })