Messages in this thread | | | From | andrey.konovalov@linux ... | Subject | [PATCH v2 0/8] kasan: test: avoid crashing the kernel with HW_TAGS | Date | Thu, 12 Aug 2021 16:53:27 +0200 |
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From: Andrey Konovalov <andreyknvl@gmail.com>
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
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