kasan: move and simplify kasan_report_async

Place kasan_report_async() next to the other main reporting routines.
Also simplify printed information.

Link: https://lkml.kernel.org/r/52d942ef3ffd29bdfa225bbe8e327bc5bda7ab09.1646237226.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Marco Elver <elver@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/mm/kasan/report.c b/mm/kasan/report.c
index 73348f83b81305a0808b82340f7cb31ab81879d7..162fd2d6209e7e7fc16395ffe632c7d10d561bed 100644 (file)
--- a/mm/kasan/report.c
+++ b/mm/kasan/report.c
@@ -392,20 +392,6 @@ static bool report_enabled(void)
        return !test_and_set_bit(KASAN_BIT_REPORTED, &kasan_flags);
 }
 
-#ifdef CONFIG_KASAN_HW_TAGS
-void kasan_report_async(void)
-{
-       unsigned long flags;
-
-       start_report(&flags, false);
-       pr_err("BUG: KASAN: invalid-access\n");
-       pr_err("Asynchronous mode enabled: no access details available\n");
-       pr_err("\n");
-       dump_stack_lvl(KERN_ERR);
-       end_report(&flags, NULL);
-}
-#endif /* CONFIG_KASAN_HW_TAGS */
-
 static void print_report(struct kasan_access_info *info)
 {
        void *tagged_addr = info->access_addr;
@@ -477,6 +463,20 @@ out:
        return ret;
 }
 
+#ifdef CONFIG_KASAN_HW_TAGS
+void kasan_report_async(void)
+{
+       unsigned long flags;
+
+       start_report(&flags, false);
+       pr_err("BUG: KASAN: invalid-access\n");
+       pr_err("Asynchronous fault: no details available\n");
+       pr_err("\n");
+       dump_stack_lvl(KERN_ERR);
+       end_report(&flags, NULL);
+}
+#endif /* CONFIG_KASAN_HW_TAGS */
+
 #ifdef CONFIG_KASAN_INLINE
 /*
  * With CONFIG_KASAN_INLINE, accesses to bogus pointers (outside the high