kasan: separate report parts by empty lines

Makes the report easier to read.

Link: http://lkml.kernel.org/r/20170302134851.101218-10-andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Acked-by: Dmitry Vyukov <dvyukov@google.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Alexander Potapenko <glider@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 7d3d9670e2334ecc2d93dea21db7ab772947d134..beee0e980e2dd3385b007fbcb119f599207dacc0 100644 (file)
--- a/mm/kasan/report.c
+++ b/mm/kasan/report.c
@@ -237,7 +237,9 @@ static void describe_object(struct kmem_cache *cache, void *object,
 
        if (cache->flags & SLAB_KASAN) {
                print_track(&alloc_info->alloc_track, "Allocated");
+               pr_err("\n");
                print_track(&alloc_info->free_track, "Freed");
+               pr_err("\n");
        }
 
        describe_object_addr(cache, object, addr);
@@ -248,6 +250,7 @@ static void print_address_description(void *addr)
        struct page *page = addr_to_page(addr);
 
        dump_stack();
+       pr_err("\n");
 
        if (page && PageSlab(page)) {
                struct kmem_cache *cache = page->slab_cache;
@@ -326,7 +329,9 @@ void kasan_report_double_free(struct kmem_cache *cache, void *object,
 
        kasan_start_report(&flags);
        pr_err("BUG: KASAN: double-free or invalid-free in %pS\n", ip);
+       pr_err("\n");
        print_address_description(object);
+       pr_err("\n");
        print_shadow_for_address(object);
        kasan_end_report(&flags);
 }
@@ -338,11 +343,13 @@ static void kasan_report_error(struct kasan_access_info *info)
        kasan_start_report(&flags);
 
        print_error_description(info);
+       pr_err("\n");
 
        if (!addr_has_shadow(info)) {
                dump_stack();
        } else {
                print_address_description((void *)info->access_addr);
+               pr_err("\n");
                print_shadow_for_address(info->first_bad_addr);
        }