Make UART4 the default UART for kernel messages

[linux-beck.git] / lib / test_kasan.c

diff --git a/lib/test_kasan.c b/lib/test_kasan.c
index 5e51872b3fc163af2fe82e6d7010b4aba08b612a..fbdf87920093b9b1dbd94e4b370a24e43d6bb8f7 100644 (file)
--- a/lib/test_kasan.c
+++ b/lib/test_kasan.c
@@ -20,6 +20,11 @@
 #include <linux/uaccess.h>
 #include <linux/module.h>
 
+/*
+ * Note: test functions are marked noinline so that their names appear in
+ * reports.
+ */
+
 static noinline void __init kmalloc_oob_right(void)
 {
        char *ptr;
@@ -411,6 +416,29 @@ static noinline void __init copy_user_test(void)
        kfree(kmem);
 }
 
+static noinline void __init use_after_scope_test(void)
+{
+       volatile char *volatile p;
+
+       pr_info("use-after-scope on int\n");
+       {
+               int local = 0;
+
+               p = (char *)&local;
+       }
+       p[0] = 1;
+       p[3] = 1;
+
+       pr_info("use-after-scope on array\n");
+       {
+               char local[1024] = {0};
+
+               p = local;
+       }
+       p[0] = 1;
+       p[1023] = 1;
+}
+
 static int __init kmalloc_tests_init(void)
 {
        kmalloc_oob_right();
@@ -436,6 +464,7 @@ static int __init kmalloc_tests_init(void)
        kasan_global_oob();
        ksize_unpoisons_memory();
        copy_user_test();
+       use_after_scope_test();
        return -EAGAIN;
 }