diff options
| author | Andrey Konovalov <andreyknvl@google.com> | 2022-03-25 04:12:55 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-03-25 05:06:49 +0300 |
| commit | 31c65110b90c76153b41b9b7e22c361ff2fb4525 (patch) | |
| tree | 2e2ddbd6038acaf135cfdc4a23b7f38d03f7929a /mm/kasan/kasan.h | |
| parent | be8631a17620ccf3d4fca74a6d6a218737e5b9cc (diff) | |
| download | linux-31c65110b90c76153b41b9b7e22c361ff2fb4525.tar.xz | |
kasan: call print_report from kasan_report_invalid_free
Call print_report() in kasan_report_invalid_free() instead of calling
printing functions directly. Compared to the existing implementation of
kasan_report_invalid_free(), print_report() makes sure that the buggy
address has metadata before printing it.
The change requires adding a report type field into kasan_access_info and
using it accordingly.
kasan_report_async() is left as is, as using print_report() will only
complicate the code.
Link: https://lkml.kernel.org/r/9ea6f0604c5d2e1fb28d93dc6c44232c1f8017fe.1646237226.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Cc: 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/kasan.h')
| -rw-r--r-- | mm/kasan/kasan.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/mm/kasan/kasan.h b/mm/kasan/kasan.h index 40b863e289ec..8c9a855152c2 100644 --- a/mm/kasan/kasan.h +++ b/mm/kasan/kasan.h @@ -127,7 +127,13 @@ static inline bool kasan_sync_fault_possible(void) #define META_MEM_BYTES_PER_ROW (META_BYTES_PER_ROW * KASAN_GRANULE_SIZE) #define META_ROWS_AROUND_ADDR 2 +enum kasan_report_type { + KASAN_REPORT_ACCESS, + KASAN_REPORT_INVALID_FREE, +}; + struct kasan_access_info { + enum kasan_report_type type; void *access_addr; void *first_bad_addr; size_t access_size; |