1 files changed, 6 insertions, 1 deletions

diff --git a/arch/x86_64/ia32/sys_ia32.c b/arch/x86_64/ia32/sys_ia32.c
index 26a01717cc1a..c9bac3af29d6 100644
--- a/arch/x86_64/ia32/sys_ia32.c
+++ b/arch/x86_64/ia32/sys_ia32.c
@@ -76,6 +76,8 @@
 
 int cp_compat_stat(struct kstat *kbuf, struct compat_stat __user *ubuf)
 {
+        compat_ino_t ino;
+
         typeof(ubuf->st_uid) uid = 0;
         typeof(ubuf->st_gid) gid = 0;
         SET_UID(uid, kbuf->uid);
@@ -84,9 +86,12 @@ int cp_compat_stat(struct kstat *kbuf, struct compat_stat __user *ubuf)
                 return -EOVERFLOW;
         if (kbuf->size >= 0x7fffffff)
                 return -EOVERFLOW;
+        ino = kbuf->ino;
+        if (sizeof(ino) < sizeof(kbuf->ino) && ino != kbuf->ino)
+                return -EOVERFLOW;
         if (!access_ok(VERIFY_WRITE, ubuf, sizeof(struct compat_stat)) ||
             __put_user (old_encode_dev(kbuf->dev), &ubuf->st_dev) ||
-            __put_user (kbuf->ino, &ubuf->st_ino) ||
+            __put_user (ino, &ubuf->st_ino) ||
             __put_user (kbuf->mode, &ubuf->st_mode) ||
             __put_user (kbuf->nlink, &ubuf->st_nlink) ||
             __put_user (uid, &ubuf->st_uid) ||