diff options
Diffstat (limited to 'programs/test/metatest.c')
| -rw-r--r-- | programs/test/metatest.c | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/programs/test/metatest.c b/programs/test/metatest.c index b8dffa9..79c57d1 100644 --- a/programs/test/metatest.c +++ b/programs/test/metatest.c @@ -28,10 +28,13 @@ #define MBEDTLS_ALLOW_PRIVATE_ACCESS +#include <mbedtls/debug.h> #include <mbedtls/platform.h> #include <mbedtls/platform_util.h> #include "test/helpers.h" #include "test/macros.h" +#include "test/memory.h" +#include "common.h" #include <stdio.h> #include <string.h> @@ -59,6 +62,15 @@ static void set_to_zero_but_the_compiler_does_not_know(volatile void *p, size_t memset((void *) p, false_but_the_compiler_does_not_know, n); } +/* Simulate an access to the given object, to avoid compiler optimizations + * in code that prepares or consumes the object. */ +static void do_nothing_with_object(void *p) +{ + (void) p; +} +void(*volatile do_nothing_with_object_but_the_compiler_does_not_know)(void *) = + do_nothing_with_object; + /****************************************************************/ /* Test framework features */ @@ -143,6 +155,65 @@ void memory_leak(const char *name) /* Leak of a heap object */ } +/* name = "test_memory_poison_%(start)_%(offset)_%(count)_%(direction)" + * Poison a region starting at start from an 8-byte aligned origin, + * encompassing count bytes. Access the region at offset from the start. + * %(start), %(offset) and %(count) are decimal integers. + * %(direction) is either the character 'r' for read or 'w' for write. + */ +void test_memory_poison(const char *name) +{ + size_t start = 0, offset = 0, count = 0; + char direction = 'r'; + if (sscanf(name, + "%*[^0-9]%" MBEDTLS_PRINTF_SIZET + "%*[^0-9]%" MBEDTLS_PRINTF_SIZET + "%*[^0-9]%" MBEDTLS_PRINTF_SIZET + "_%c", + &start, &offset, &count, &direction) != 4) { + mbedtls_fprintf(stderr, "%s: Bad name format: %s\n", __func__, name); + return; + } + + union { + long long ll; + unsigned char buf[32]; + } aligned; + memset(aligned.buf, 'a', sizeof(aligned.buf)); + + if (start > sizeof(aligned.buf)) { + mbedtls_fprintf(stderr, + "%s: start=%" MBEDTLS_PRINTF_SIZET + " > size=%" MBEDTLS_PRINTF_SIZET, + __func__, start, sizeof(aligned.buf)); + return; + } + if (start + count > sizeof(aligned.buf)) { + mbedtls_fprintf(stderr, + "%s: start+count=%" MBEDTLS_PRINTF_SIZET + " > size=%" MBEDTLS_PRINTF_SIZET, + __func__, start + count, sizeof(aligned.buf)); + return; + } + if (offset >= count) { + mbedtls_fprintf(stderr, + "%s: offset=%" MBEDTLS_PRINTF_SIZET + " >= count=%" MBEDTLS_PRINTF_SIZET, + __func__, offset, count); + return; + } + + MBEDTLS_TEST_MEMORY_POISON(aligned.buf + start, count); + + if (direction == 'w') { + aligned.buf[start + offset] = 'b'; + do_nothing_with_object_but_the_compiler_does_not_know(aligned.buf); + } else { + do_nothing_with_object_but_the_compiler_does_not_know(aligned.buf); + mbedtls_printf("%u\n", (unsigned) aligned.buf[start + offset]); + } +} + /****************************************************************/ /* Threading */ @@ -291,6 +362,22 @@ metatest_t metatests[] = { { "double_free", "asan", double_free }, { "read_uninitialized_stack", "msan", read_uninitialized_stack }, { "memory_leak", "asan", memory_leak }, + { "test_memory_poison_0_0_8_r", "poison", test_memory_poison }, + { "test_memory_poison_0_0_8_w", "poison", test_memory_poison }, + { "test_memory_poison_0_7_8_r", "poison", test_memory_poison }, + { "test_memory_poison_0_7_8_w", "poison", test_memory_poison }, + { "test_memory_poison_0_0_1_r", "poison", test_memory_poison }, + { "test_memory_poison_0_0_1_w", "poison", test_memory_poison }, + { "test_memory_poison_0_1_2_r", "poison", test_memory_poison }, + { "test_memory_poison_0_1_2_w", "poison", test_memory_poison }, + { "test_memory_poison_7_0_8_r", "poison", test_memory_poison }, + { "test_memory_poison_7_0_8_w", "poison", test_memory_poison }, + { "test_memory_poison_7_7_8_r", "poison", test_memory_poison }, + { "test_memory_poison_7_7_8_w", "poison", test_memory_poison }, + { "test_memory_poison_7_0_1_r", "poison", test_memory_poison }, + { "test_memory_poison_7_0_1_w", "poison", test_memory_poison }, + { "test_memory_poison_7_1_2_r", "poison", test_memory_poison }, + { "test_memory_poison_7_1_2_w", "poison", test_memory_poison }, { "mutex_lock_not_initialized", "pthread", mutex_lock_not_initialized }, { "mutex_unlock_not_initialized", "pthread", mutex_unlock_not_initialized }, { "mutex_free_not_initialized", "pthread", mutex_free_not_initialized }, |