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/* Copyright 2023 The ChromiumOS Authors
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "common.h"
#include "shared_mem.h"
#include "stdlib.h"
#include "test_util.h"
#include <malloc.h>
struct malloc_data {
uint32_t size;
uint8_t val;
uint8_t *data;
};
static struct malloc_data test_data[] = {
{ .size = 15, .val = 1, .data = NULL },
{ .size = 1024, .val = 2, .data = NULL },
{ .size = 86096, .val = 3, .data = NULL }
};
test_static int test_malloc_different_sizes(void)
{
/* Trim to make sure that previous tests haven't fragmented the heap. */
malloc_trim(0);
for (int i = 0; i < ARRAY_SIZE(test_data); i++) {
uint8_t *volatile ptr = malloc(test_data[i].size);
TEST_NE(ptr, NULL, "%p");
test_data[i].data = ptr;
for (int j = 0; j < test_data[i].size; j++) {
ptr[j] = test_data[i].val;
}
}
for (int i = 0; i < ARRAY_SIZE(test_data); i++) {
uint8_t *ptr = test_data[i].data;
/* Using TEST_EQ results in too much logging. */
for (int j = 0; j < test_data[i].size; j++) {
if (ptr[j] != test_data[i].val) {
TEST_ASSERT(false);
}
}
}
for (int i = 0; i < ARRAY_SIZE(test_data); i++) {
free(test_data[i].data);
}
return EC_SUCCESS;
}
test_static int test_free_null(void)
{
free(NULL);
return EC_SUCCESS;
}
test_static int test_malloc_large(void)
{
/* Trim to make sure that previous tests haven't fragmented the heap. */
malloc_trim(0);
uint8_t *volatile ptr = malloc(shared_mem_size() * 0.8);
TEST_NE(ptr, NULL, "%p");
free(ptr);
return EC_SUCCESS;
}
test_static int test_malloc_too_large(void)
{
/* Trim to make sure that previous tests haven't fragmented the heap. */
malloc_trim(0);
uint8_t *volatile ptr = malloc(shared_mem_size() + 1);
TEST_EQ(ptr, NULL, "%p");
free(ptr);
return EC_SUCCESS;
}
/**
* Useful for manually testing the behavior of double frees.
*
* For example, if you compile the malloc implementation provided by newlib
* with the patch in https://crrev.com/c/4406822, you'll get something like:
*
* assertion "inuse(p)" failed: file "newlib/libc/stdlib/mallocr.c",
* line 1841, function: do_check_inuse_chunk
* _exit called with rc: 1
*
* If you run the host tests you'll get something like:
*
* free(): double free detected in tcache 2
* Aborted
*/
test_static int test_malloc_double_free(void)
{
uint8_t *volatile ptr = malloc(10);
TEST_NE(ptr, NULL, "%p");
free(ptr);
free(ptr);
return EC_SUCCESS;
}
void run_test(int argc, const char **argv)
{
test_reset();
RUN_TEST(test_free_null);
RUN_TEST(test_malloc_different_sizes);
RUN_TEST(test_malloc_large);
if (!IS_ENABLED(BOARD_HOST))
RUN_TEST(test_malloc_too_large);
test_print_result();
}
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