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author | Andrey Konovalov <andreyknvl@google.com> | 2023-12-21 23:04:52 +0300 |
---|---|---|
committer | Andrew Morton <akpm@linux-foundation.org> | 2023-12-29 22:58:45 +0300 |
commit | 3ab9304db6ab13a8d4b5f99ef0bbd9302f26c741 (patch) | |
tree | a3b8b2141ba3e675aba286e16b106d169b488213 /mm/kasan/kasan_test.c | |
parent | f2fffc0cfcfa9ed2ed7448705a5e187cabee6af4 (diff) | |
download | linux-3ab9304db6ab13a8d4b5f99ef0bbd9302f26c741.tar.xz |
kasan: remove SLUB checks for page_alloc fallbacks in tests
A number of KASAN tests rely on the fact that calling kmalloc with a size
larger than an order-1 page falls back onto page_alloc.
This fallback was originally only implemented for SLUB, but since commit
d6a71648dbc0 ("mm/slab: kmalloc: pass requests larger than order-1 page to
page allocator"), it is also implemented for SLAB.
Thus, drop the SLUB checks from the tests.
Link: https://lkml.kernel.org/r/c82099b6fb365b6f4c2c21b112d4abb4dfd83e53.1703188911.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Marco Elver <elver@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/kasan/kasan_test.c')
-rw-r--r-- | mm/kasan/kasan_test.c | 26 |
1 files changed, 2 insertions, 24 deletions
diff --git a/mm/kasan/kasan_test.c b/mm/kasan/kasan_test.c index 9b1024a6e580..691c15fc7cdb 100644 --- a/mm/kasan/kasan_test.c +++ b/mm/kasan/kasan_test.c @@ -215,7 +215,7 @@ static void kmalloc_node_oob_right(struct kunit *test) /* * Check that KASAN detects an out-of-bounds access for a big object allocated - * via kmalloc(). But not as big as to trigger the page_alloc fallback for SLUB. + * via kmalloc(). But not as big as to trigger the page_alloc fallback. */ static void kmalloc_big_oob_right(struct kunit *test) { @@ -233,8 +233,7 @@ static void kmalloc_big_oob_right(struct kunit *test) /* * The kmalloc_large_* tests below use kmalloc() to allocate a memory chunk * that does not fit into the largest slab cache and therefore is allocated via - * the page_alloc fallback for SLUB. SLAB has no such fallback, and thus these - * tests are not supported for it. + * the page_alloc fallback. */ static void kmalloc_large_oob_right(struct kunit *test) @@ -242,8 +241,6 @@ static void kmalloc_large_oob_right(struct kunit *test) char *ptr; size_t size = KMALLOC_MAX_CACHE_SIZE + 10; - KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_SLUB); - ptr = kmalloc(size, GFP_KERNEL); KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr); @@ -258,8 +255,6 @@ static void kmalloc_large_uaf(struct kunit *test) char *ptr; size_t size = KMALLOC_MAX_CACHE_SIZE + 10; - KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_SLUB); - ptr = kmalloc(size, GFP_KERNEL); KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr); kfree(ptr); @@ -272,8 +267,6 @@ static void kmalloc_large_invalid_free(struct kunit *test) char *ptr; size_t size = KMALLOC_MAX_CACHE_SIZE + 10; - KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_SLUB); - ptr = kmalloc(size, GFP_KERNEL); KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr); @@ -407,18 +400,12 @@ static void krealloc_less_oob(struct kunit *test) static void krealloc_large_more_oob(struct kunit *test) { - /* page_alloc fallback is only implemented for SLUB. */ - KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_SLUB); - krealloc_more_oob_helper(test, KMALLOC_MAX_CACHE_SIZE + 201, KMALLOC_MAX_CACHE_SIZE + 235); } static void krealloc_large_less_oob(struct kunit *test) { - /* page_alloc fallback is only implemented for SLUB. */ - KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_SLUB); - krealloc_less_oob_helper(test, KMALLOC_MAX_CACHE_SIZE + 235, KMALLOC_MAX_CACHE_SIZE + 201); } @@ -1156,9 +1143,6 @@ static void mempool_kmalloc_large_uaf(struct kunit *test) size_t size = KMALLOC_MAX_CACHE_SIZE + 1; void *extra_elem; - /* page_alloc fallback is only implemented for SLUB. */ - KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_SLUB); - extra_elem = mempool_prepare_kmalloc(test, &pool, size); mempool_uaf_helper(test, &pool, false); @@ -1227,9 +1211,6 @@ static void mempool_kmalloc_large_double_free(struct kunit *test) size_t size = KMALLOC_MAX_CACHE_SIZE + 1; char *extra_elem; - /* page_alloc fallback is only implemented for SLUB. */ - KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_SLUB); - extra_elem = mempool_prepare_kmalloc(test, &pool, size); mempool_double_free_helper(test, &pool); @@ -1284,9 +1265,6 @@ static void mempool_kmalloc_large_invalid_free(struct kunit *test) size_t size = KMALLOC_MAX_CACHE_SIZE + 1; char *extra_elem; - /* page_alloc fallback is only implemented for SLUB. */ - KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_SLUB); - extra_elem = mempool_prepare_kmalloc(test, &pool, size); mempool_kmalloc_invalid_free_helper(test, &pool); |