kasan: unify report headers
Unify KASAN report header format for different kinds of bad memory
accesses. Makes the code simpler.
Change-Id: If5f118d3e33a09caeeb91a21ef220db0fe75e931
Link: http://lkml.kernel.org/r/20170302134851.101218-3-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>
Git-commit: 7d418f7b0d3407b93ec70f3b380cc5beafa1fa68
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
Signed-off-by: Trilok Soni <tsoni@codeaurora.org>
diff --git a/mm/kasan/report.c b/mm/kasan/report.c
index d6ede9e..ff3a99b 100644
--- a/mm/kasan/report.c
+++ b/mm/kasan/report.c
@@ -118,16 +118,22 @@ const char *get_wild_bug_type(struct kasan_access_info *info)
return bug_type;
}
+static const char *get_bug_type(struct kasan_access_info *info)
+{
+ if (addr_has_shadow(info))
+ return get_shadow_bug_type(info);
+ return get_wild_bug_type(info);
+}
+
static void print_error_description(struct kasan_access_info *info)
{
- const char *bug_type = get_shadow_bug_type(info);
+ const char *bug_type = get_bug_type(info);
pr_err("BUG: KASAN: %s in %pS at addr %p\n",
- bug_type, (void *)info->ip,
- info->access_addr);
+ bug_type, (void *)info->ip, info->access_addr);
pr_err("%s of size %zu by task %s/%d\n",
- info->is_write ? "Write" : "Read",
- info->access_size, current->comm, task_pid_nr(current));
+ info->is_write ? "Write" : "Read", info->access_size,
+ current->comm, task_pid_nr(current));
}
static inline bool kernel_or_module_addr(const void *addr)
@@ -292,17 +298,11 @@ static void kasan_report_error(struct kasan_access_info *info)
kasan_start_report(&flags);
+ print_error_description(info);
+
if (!addr_has_shadow(info)) {
- const char *bug_type = get_wild_bug_type(info);
- pr_err("BUG: KASAN: %s on address %p\n",
- bug_type, info->access_addr);
- pr_err("%s of size %zu by task %s/%d\n",
- info->is_write ? "Write" : "Read",
- info->access_size, current->comm,
- task_pid_nr(current));
dump_stack();
} else {
- print_error_description(info);
print_address_description(info);
print_shadow_for_address(info->first_bad_addr);
}