diff options
| author | Andrey Konovalov <andreyknvl@google.com> | 2022-09-05 23:05:48 +0200 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-10-03 14:03:02 -0700 |
| commit | 1f538e1f2d294cf8a9486fb1a7d4d4f0d16e2b01 (patch) | |
| tree | 90463481097a8961c6926c96f486f1ffdc80289c /lib | |
| parent | 80b92bfe3bb75aa6688f58af9df356757a46f659 (diff) | |
kasan: better identify bug types for tag-based modes
Identify the bug type for the tag-based modes based on the stack trace
entries found in the stack ring.
If a free entry is found first (meaning that it was added last), mark the
bug as use-after-free. If an alloc entry is found first, mark the bug as
slab-out-of-bounds. Otherwise, assign the common bug type.
This change returns the functionalify of the previously dropped
CONFIG_KASAN_TAGS_IDENTIFY.
Link: https://lkml.kernel.org/r/13ce7fa07d9d995caedd1439dfae4d51401842f2.1662411800.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Reviewed-by: Marco Elver <elver@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Evgenii Stepanov <eugenis@google.com>
Cc: Peter Collingbourne <pcc@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'lib')
0 files changed, 0 insertions, 0 deletions