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authorAndrey Konovalov <andreyknvl@google.com>2022-03-25 04:12:17 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2022-03-25 05:06:49 +0300
commit038fd2b4cb42c64afa3cacad53f9e0f514b8d02a (patch)
treed763749f141dbea79af1f2725e96ce663781e5a5 /mm/kasan
parent7131c883f995df9288f70879e501016119d4d971 (diff)
downloadlinux-038fd2b4cb42c64afa3cacad53f9e0f514b8d02a.tar.xz
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@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Reviewed-by: 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>
Diffstat (limited to 'mm/kasan')
-rw-r--r--mm/kasan/report.c7
1 files 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);