diff options
| author | Dmitry Vyukov <dvyukov@google.com> | 2016-11-30 15:54:16 -0800 |
|---|---|---|
| committer | Paul Lawrence <paullawrence@google.com> | 2017-12-14 08:24:13 -0800 |
| commit | 1d16d8b51ecdeb4f589b7c4890b6444ca42abaf7 (patch) | |
| tree | 2b11ad0345aedb5234de25c663a0ed0fedaeaf2a /mm/kasan/report.c | |
| parent | 7efecacc26bf592f1f66e712539d2b720682b695 (diff) | |
UPSTREAM: 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>
Bug: 64145065
(cherry-picked from 828347f8f9a558cf1af2faa46387a26564f2ac3e)
Change-Id: Ib9cb585efbe98ba11a7efbd233ebd97cb4214a92
Signed-off-by: Paul Lawrence <paullawrence@google.com>
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 1a79218f79be..8ca412aebcf1 100644 --- a/mm/kasan/report.c +++ b/mm/kasan/report.c @@ -91,6 +91,9 @@ 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", |