[PATCH v2 0/8] kasan: test: avoid crashing the kernel with HW_TAGS

[andrey . konovalov]

From: Andrey Konovalov <andreyknvl@xxxxxxxxx>

KASAN tests do out-of-bounds and use-after-free accesses. Running the
tests works fine for the GENERIC mode, as it uses qurantine and redzones.
But the HW_TAGS mode uses neither, and running the tests might crash
the kernel.

Rework the tests to avoid corrupting kernel memory.

Changes v1->v2:
- Touch both good and bad memory in memset tests as suggested by Marco.

Andrey Konovalov (8):
  kasan: test: rework kmalloc_oob_right
  kasan: test: avoid writing invalid memory
  kasan: test: avoid corrupting memory via memset
  kasan: test: disable kmalloc_memmove_invalid_size for HW_TAGS
  kasan: test: only do kmalloc_uaf_memset for generic mode
  kasan: test: clean up ksize_uaf
  kasan: test: avoid corrupting memory in copy_user_test
  kasan: test: avoid corrupting memory in kasan_rcu_uaf

 lib/test_kasan.c        | 80 +++++++++++++++++++++++++++++------------
 lib/test_kasan_module.c | 20 +++++------
 2 files changed, 66 insertions(+), 34 deletions(-)

-- 
2.25.1