From: Andrey Konovalov <andreyknvl@xxxxxxxxxx> Subject: kasan: more line breaks in reports Add a line break after each part that describes the buggy address. Improves readability of reports. Link: https://lkml.kernel.org/r/8682c4558e533cd0f99bdb964ce2fe741f2a9212.1646237226.git.andreyknvl@xxxxxxxxxx Signed-off-by: Andrey Konovalov <andreyknvl@xxxxxxxxxx> Reviewed-by: Alexander Potapenko <glider@xxxxxxxxxx> Cc: Andrey Ryabinin <ryabinin.a.a@xxxxxxxxx> Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx> Cc: Marco Elver <elver@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/kasan/report.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) --- a/mm/kasan/report.c~kasan-more-line-breaks-in-reports +++ a/mm/kasan/report.c @@ -250,11 +250,13 @@ static void print_address_description(vo void *object = nearest_obj(cache, slab, addr); describe_object(cache, object, addr, tag); + pr_err("\n"); } if (kernel_or_module_addr(addr) && !init_task_stack_addr(addr)) { pr_err("The buggy address belongs to the variable:\n"); pr_err(" %pS\n", addr); + pr_err("\n"); } if (is_vmalloc_addr(addr)) { @@ -265,6 +267,7 @@ static void print_address_description(vo " [%px, %px) created by:\n" " %pS\n", va->addr, va->addr + va->size, va->caller); + pr_err("\n"); page = vmalloc_to_page(page); } @@ -273,9 +276,11 @@ static void print_address_description(vo if (page) { pr_err("The buggy address belongs to the physical page:\n"); dump_page(page, "kasan: bad access detected"); + pr_err("\n"); } kasan_print_address_stack_frame(addr); + pr_err("\n"); } static bool meta_row_is_guilty(const void *row, const void *addr) @@ -382,7 +387,6 @@ void kasan_report_invalid_free(void *obj kasan_print_tags(tag, object); pr_err("\n"); print_address_description(object, tag); - pr_err("\n"); print_memory_metadata(object); end_report(&flags, (unsigned long)object); } @@ -443,7 +447,6 @@ static void __kasan_report(unsigned long if (addr_has_metadata(untagged_addr)) { print_address_description(untagged_addr, get_tag(tagged_addr)); - pr_err("\n"); print_memory_metadata(info.first_bad_addr); } else { dump_stack_lvl(KERN_ERR); _
