diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/test_kasan.c | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/lib/test_kasan.c b/lib/test_kasan.c index c1efb1b61017..c32f3b0048dc 100644 --- a/lib/test_kasan.c +++ b/lib/test_kasan.c @@ -138,6 +138,71 @@ static noinline void __init kmalloc_oob_16(void) kfree(ptr2); } +static noinline void __init kmalloc_oob_memset_2(void) +{ + char *ptr; + size_t size = 8; + + pr_info("out-of-bounds in memset2\n"); + ptr = kmalloc(size, GFP_KERNEL); + if (!ptr) { + pr_err("Allocation failed\n"); + return; + } + + memset(ptr+7, 0, 2); + kfree(ptr); +} + +static noinline void __init kmalloc_oob_memset_4(void) +{ + char *ptr; + size_t size = 8; + + pr_info("out-of-bounds in memset4\n"); + ptr = kmalloc(size, GFP_KERNEL); + if (!ptr) { + pr_err("Allocation failed\n"); + return; + } + + memset(ptr+5, 0, 4); + kfree(ptr); +} + + +static noinline void __init kmalloc_oob_memset_8(void) +{ + char *ptr; + size_t size = 8; + + pr_info("out-of-bounds in memset8\n"); + ptr = kmalloc(size, GFP_KERNEL); + if (!ptr) { + pr_err("Allocation failed\n"); + return; + } + + memset(ptr+1, 0, 8); + kfree(ptr); +} + +static noinline void __init kmalloc_oob_memset_16(void) +{ + char *ptr; + size_t size = 16; + + pr_info("out-of-bounds in memset16\n"); + ptr = kmalloc(size, GFP_KERNEL); + if (!ptr) { + pr_err("Allocation failed\n"); + return; + } + + memset(ptr+1, 0, 16); + kfree(ptr); +} + static noinline void __init kmalloc_oob_in_memset(void) { char *ptr; @@ -264,6 +329,10 @@ static int __init kmalloc_tests_init(void) kmalloc_oob_krealloc_less(); kmalloc_oob_16(); kmalloc_oob_in_memset(); + kmalloc_oob_memset_2(); + kmalloc_oob_memset_4(); + kmalloc_oob_memset_8(); + kmalloc_oob_memset_16(); kmalloc_uaf(); kmalloc_uaf_memset(); kmalloc_uaf2(); |