1 files changed, 18 insertions, 1 deletions

diff --git a/kernel/sys.c b/kernel/sys.c
index a8c9f5a7dda6..a03d9cd23ed7 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -97,6 +97,12 @@
 #ifndef MPX_DISABLE_MANAGEMENT
 # define MPX_DISABLE_MANAGEMENT(a)      (-EINVAL)
 #endif
+#ifndef GET_FP_MODE
+# define GET_FP_MODE(a)         (-EINVAL)
+#endif
+#ifndef SET_FP_MODE
+# define SET_FP_MODE(a,b)       (-EINVAL)
+#endif
 
 /*
  * this is where the system-wide overflow UID and GID are defined, for
@@ -1102,6 +1108,7 @@ DECLARE_RWSEM(uts_sem);
 /*
  * Work around broken programs that cannot handle "Linux 3.0".
  * Instead we map 3.x to 2.6.40+x, so e.g. 3.0 would be 2.6.40
+ * And we map 4.x to 2.6.60+x, so 4.0 would be 2.6.60.
  */
 static int override_release(char __user *release, size_t len)
 {
@@ -1121,7 +1128,7 @@ static int override_release(char __user *release, size_t len)
                                 break;
                         rest++;
                 }
-                v = ((LINUX_VERSION_CODE >> 8) & 0xff) + 40;
+                v = ((LINUX_VERSION_CODE >> 8) & 0xff) + 60;
                 copy = clamp_t(size_t, len, 1, sizeof(buf));
                 copy = scnprintf(buf, copy, "2.6.%u%s", v, rest);
                 ret = copy_to_user(release, buf, copy + 1);
@@ -2210,11 +2217,21 @@ SYSCALL_DEFINE5(prctl, int, option, unsigned long, arg2, unsigned long, arg3,
                 up_write(&me->mm->mmap_sem);
                 break;
         case PR_MPX_ENABLE_MANAGEMENT:
+                if (arg2 || arg3 || arg4 || arg5)
+                        return -EINVAL;
                 error = MPX_ENABLE_MANAGEMENT(me);
                 break;
         case PR_MPX_DISABLE_MANAGEMENT:
+                if (arg2 || arg3 || arg4 || arg5)
+                        return -EINVAL;
                 error = MPX_DISABLE_MANAGEMENT(me);
                 break;
+        case PR_SET_FP_MODE:
+                error = SET_FP_MODE(me, arg2);
+                break;
+        case PR_GET_FP_MODE:
+                error = GET_FP_MODE(me);
+                break;
         default:
                 error = -EINVAL;
                 break;