diff --git a/drivers/misc/lkdtm_perms.c b/drivers/misc/lkdtm_perms.c
index 45f1c0f966123c7b3870e4f42d724270f4f75e5f..c7635a79341fb3e52d527135db2a1c958cc7e087 100644
--- a/drivers/misc/lkdtm_perms.c
+++ b/drivers/misc/lkdtm_perms.c
@@ -60,15 +60,18 @@ static noinline void execute_location(void *dst, bool write)
 
 static void execute_user_location(void *dst)
 {
+	int copied;
+
 	/* Intentionally crossing kernel/user memory boundary. */
 	void (*func)(void) = dst;
 
 	pr_info("attempting ok execution at %p\n", do_nothing);
 	do_nothing();
 
-	if (copy_to_user((void __user *)dst, do_nothing, EXEC_SIZE))
+	copied = access_process_vm(current, (unsigned long)dst, do_nothing,
+				   EXEC_SIZE, FOLL_WRITE);
+	if (copied < EXEC_SIZE)
 		return;
-	flush_icache_range((unsigned long)dst, (unsigned long)dst + EXEC_SIZE);
 	pr_info("attempting bad execution at %p\n", func);
 	func();
 }
diff --git a/mm/memory.c b/mm/memory.c
index e18c57bdc75c4c96e3ef79546afe11fab5a3c07a..485f12d8ad5c84abdf93fae26e4c92d175b4a13e 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -3966,6 +3966,7 @@ int access_process_vm(struct task_struct *tsk, unsigned long addr,
 
 	return ret;
 }
+EXPORT_SYMBOL_GPL(access_process_vm);
 
 /*
  * Print the name of a VMA.
diff --git a/mm/nommu.c b/mm/nommu.c
index 8b8faaf2a9e95cfc607ff1a5a37c83eadfda59fe..9720e0bab0298fcec3855d7300934eb9e6223b4c 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -1878,6 +1878,7 @@ int access_process_vm(struct task_struct *tsk, unsigned long addr, void *buf, in
 	mmput(mm);
 	return len;
 }
+EXPORT_SYMBOL_GPL(access_process_vm);
 
 /**
  * nommu_shrink_inode_mappings - Shrink the shared mappings on an inode