1 files changed, 8 insertions, 1 deletions

diff --git a/arch/powerpc/kernel/module_64.c b/arch/powerpc/kernel/module_64.c
index 2c53de9f3b6a..8661eea78503 100644
--- a/arch/powerpc/kernel/module_64.c
+++ b/arch/powerpc/kernel/module_64.c
@@ -680,7 +680,14 @@ int apply_relocate_add(Elf64_Shdr *sechdrs,
 
                 case R_PPC64_REL32:
                         /* 32 bits relative (used by relative exception tables) */
-                        *(u32 *)location = value - (unsigned long)location;
+                        /* Convert value to relative */
+                        value -= (unsigned long)location;
+                        if (value + 0x80000000 > 0xffffffff) {
+                                pr_err("%s: REL32 %li out of range!\n",
+                                       me->name, (long int)value);
+                                return -ENOEXEC;
+                        }
+                        *(u32 *)location = value;
                         break;
 
                 case R_PPC64_TOCSAVE: