From: andrey.konovalov@linux.dev
To: Marco Elver <elver@google.com>, Alexander Potapenko <glider@google.com>
Cc: Andrey Konovalov <andreyknvl@gmail.com>,
Dmitry Vyukov <dvyukov@google.com>,
Andrey Ryabinin <ryabinin.a.a@gmail.com>,
kasan-dev@googlegroups.com,
Andrew Morton <akpm@linux-foundation.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Andrey Konovalov <andreyknvl@google.com>
Subject: [PATCH mm 02/22] kasan: more line breaks in reports
Date: Wed, 2 Mar 2022 17:36:22 +0100 [thread overview]
Message-ID: <8682c4558e533cd0f99bdb964ce2fe741f2a9212.1646237226.git.andreyknvl@google.com> (raw)
In-Reply-To: <cover.1646237226.git.andreyknvl@google.com>
From: Andrey Konovalov <andreyknvl@google.com>
Add a line break after each part that describes the buggy address.
Improves readability of reports.
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
---
mm/kasan/report.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/mm/kasan/report.c b/mm/kasan/report.c
index 607a8c2e4674..ded648c0a0e4 100644
--- a/mm/kasan/report.c
+++ b/mm/kasan/report.c
@@ -250,11 +250,13 @@ static void print_address_description(void *addr, u8 tag)
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(void *addr, u8 tag)
" [%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(void *addr, u8 tag)
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 *object, unsigned long ip)
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 addr, size_t size, bool is_write,
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);
--
2.25.1
next prev parent reply other threads:[~2022-03-02 16:37 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-02 16:36 [PATCH mm 00/22] kasan: report clean-ups and improvements andrey.konovalov
2022-03-02 16:36 ` [PATCH mm 01/22] kasan: drop addr check from describe_object_addr andrey.konovalov
2022-03-02 17:27 ` Alexander Potapenko
2022-03-02 16:36 ` andrey.konovalov [this message]
2022-03-02 17:28 ` [PATCH mm 02/22] kasan: more line breaks in reports Alexander Potapenko
2022-03-02 16:36 ` [PATCH mm 03/22] kasan: rearrange stack frame info " andrey.konovalov
2022-03-02 17:29 ` Alexander Potapenko
2022-03-02 16:36 ` [PATCH mm 04/22] kasan: improve " andrey.konovalov
2022-03-02 17:31 ` Alexander Potapenko
2022-03-02 16:36 ` [PATCH mm 05/22] kasan: print basic stack frame info for SW_TAGS andrey.konovalov
2022-03-02 17:34 ` Alexander Potapenko
2022-03-08 14:09 ` Andrey Konovalov
2022-03-02 16:36 ` [PATCH mm 06/22] kasan: simplify async check in end_report andrey.konovalov
2022-03-02 17:37 ` Alexander Potapenko
2022-03-08 14:09 ` Andrey Konovalov
2022-03-02 16:36 ` [PATCH mm 07/22] kasan: simplify kasan_update_kunit_status and call sites andrey.konovalov
2022-03-02 17:46 ` Alexander Potapenko
2022-03-02 16:36 ` [PATCH mm 08/22] kasan: check CONFIG_KASAN_KUNIT_TEST instead of CONFIG_KUNIT andrey.konovalov
2022-03-02 17:57 ` Alexander Potapenko
2022-03-02 16:36 ` [PATCH mm 09/22] kasan: move update_kunit_status to start_report andrey.konovalov
2022-03-02 16:36 ` [PATCH mm 10/22] kasan: move disable_trace_on_warning " andrey.konovalov
2022-03-02 18:00 ` Alexander Potapenko
2022-03-02 16:36 ` [PATCH mm 11/22] kasan: split out print_report from __kasan_report andrey.konovalov
2022-03-02 16:36 ` [PATCH mm 12/22] kasan: simplify kasan_find_first_bad_addr call sites andrey.konovalov
2022-03-02 16:36 ` [PATCH mm 13/22] kasan: restructure kasan_report andrey.konovalov
2022-03-02 16:36 ` [PATCH mm 14/22] kasan: merge __kasan_report into kasan_report andrey.konovalov
2022-03-02 16:36 ` [PATCH mm 15/22] kasan: call print_report from kasan_report_invalid_free andrey.konovalov
2022-03-02 16:36 ` [PATCH mm 16/22] kasan: move and simplify kasan_report_async andrey.konovalov
2022-03-02 16:36 ` [PATCH mm 17/22] kasan: rename kasan_access_info to kasan_report_info andrey.konovalov
2022-03-02 16:36 ` [PATCH mm 18/22] kasan: add comment about UACCESS regions to kasan_report andrey.konovalov
2022-03-02 16:36 ` [PATCH mm 19/22] kasan: respect KASAN_BIT_REPORTED in all reporting routines andrey.konovalov
2022-03-02 16:36 ` [PATCH mm 20/22] kasan: reorder reporting functions andrey.konovalov
2022-03-02 16:36 ` [PATCH mm 21/22] kasan: move and hide kasan_save_enable/restore_multi_shot andrey.konovalov
2022-03-02 16:36 ` [PATCH mm 22/22] kasan: disable LOCKDEP when printing reports andrey.konovalov
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