diff --git a/fs/open.c b/fs/open.c
index c32c89d6d8dbed71f831e94f8aa0c67eade8cfc1..8279c65d3befcdb963051a18ccbaf506bc620e1d 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -331,7 +331,9 @@ static long do_sys_ftruncate(unsigned int fd, loff_t length, int small)
 
 asmlinkage long sys_ftruncate(unsigned int fd, unsigned long length)
 {
-	return do_sys_ftruncate(fd, length, 1);
+	long ret = do_sys_ftruncate(fd, length, 1);
+	prevent_tail_call(ret);
+	return ret;
 }
 
 /* LFS versions of truncate are only needed on 32 bit machines */
@@ -343,7 +345,9 @@ asmlinkage long sys_truncate64(const char __user * path, loff_t length)
 
 asmlinkage long sys_ftruncate64(unsigned int fd, loff_t length)
 {
-	return do_sys_ftruncate(fd, length, 0);
+	long ret = do_sys_ftruncate(fd, length, 0);
+	prevent_tail_call(ret);
+	return ret;
 }
 #endif