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kasan: unify report headers 

Unify KASAN report header format for different kinds of bad memory
accesses.  Makes the code simpler.

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>
This commit is contained in:
Andrey Konovalov 2017-05-03 14:56:28 -07:00 committed by Linus Torvalds
parent 5e82cd1203
commit 7d418f7b0d
1 changed files with 13 additions and 13 deletions
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26
mm/kasan/report.c
View File

@ -121,16 +121,22 @@ 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)
@ -297,17 +303,11 @@ 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);
}