diff options
| author | Dmitry Vyukov <dvyukov@google.com> | 2016-12-01 02:54:16 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-12-01 03:32:52 +0300 |
| commit | 828347f8f9a558cf1af2faa46387a26564f2ac3e (patch) | |
| tree | 4acb63366cc89b3e87e85805530911300dd4ab19 /mm/kasan/report.c | |
| parent | 045d599a286bc01daa3510d59272440a17b23c2e (diff) | |
| download | linux-828347f8f9a558cf1af2faa46387a26564f2ac3e.tar.xz | |
kasan: support use-after-scope detection
Gcc revision 241896 implements use-after-scope detection. Will be
available in gcc 7. Support it in KASAN.
Gcc emits 2 new callbacks to poison/unpoison large stack objects when
they go in/out of scope. Implement the callbacks and add a test.
[dvyukov@google.com: v3]
Link: http://lkml.kernel.org/r/1479998292-144502-1-git-send-email-dvyukov@google.com
Link: http://lkml.kernel.org/r/1479226045-145148-1-git-send-email-dvyukov@google.com
Signed-off-by: Dmitry Vyukov <dvyukov@google.com>
Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: <stable@vger.kernel.org> [4.0+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/kasan/report.c')
| -rw-r--r-- | mm/kasan/report.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/mm/kasan/report.c b/mm/kasan/report.c index 24c1211fe9d5..073325aedc68 100644 --- a/mm/kasan/report.c +++ b/mm/kasan/report.c @@ -90,6 +90,9 @@ static void print_error_description(struct kasan_access_info *info) case KASAN_KMALLOC_FREE: bug_type = "use-after-free"; break; + case KASAN_USE_AFTER_SCOPE: + bug_type = "use-after-scope"; + break; } pr_err("BUG: KASAN: %s in %pS at addr %p\n", |