diff options
Diffstat (limited to 'lib/test_kasan.c')
| -rw-r--r-- | lib/test_kasan.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/lib/test_kasan.c b/lib/test_kasan.c index e9c5d765be66..a808d81b409d 100644 --- a/lib/test_kasan.c +++ b/lib/test_kasan.c @@ -523,6 +523,54 @@ static noinline void __init kasan_alloca_oob_right(void) *(volatile char *)p; } +static noinline void __init kmem_cache_double_free(void) +{ + char *p; + size_t size = 200; + struct kmem_cache *cache; + + cache = kmem_cache_create("test_cache", size, 0, 0, NULL); + if (!cache) { + pr_err("Cache allocation failed\n"); + return; + } + pr_info("double-free on heap object\n"); + p = kmem_cache_alloc(cache, GFP_KERNEL); + if (!p) { + pr_err("Allocation failed\n"); + kmem_cache_destroy(cache); + return; + } + + kmem_cache_free(cache, p); + kmem_cache_free(cache, p); + kmem_cache_destroy(cache); +} + +static noinline void __init kmem_cache_invalid_free(void) +{ + char *p; + size_t size = 200; + struct kmem_cache *cache; + + cache = kmem_cache_create("test_cache", size, 0, SLAB_TYPESAFE_BY_RCU, + NULL); + if (!cache) { + pr_err("Cache allocation failed\n"); + return; + } + pr_info("invalid-free of heap object\n"); + p = kmem_cache_alloc(cache, GFP_KERNEL); + if (!p) { + pr_err("Allocation failed\n"); + kmem_cache_destroy(cache); + return; + } + + kmem_cache_free(cache, p + 1); + kmem_cache_destroy(cache); +} + static int __init kmalloc_tests_init(void) { /* @@ -560,6 +608,8 @@ static int __init kmalloc_tests_init(void) ksize_unpoisons_memory(); copy_user_test(); use_after_scope_test(); + kmem_cache_double_free(); + kmem_cache_invalid_free(); kasan_restore_multi_shot(multishot); |