mirror of
https://github.com/espressif/esp-idf.git
synced 2025-10-30 20:51:41 +00:00
b7fc067c8c
When realloc-ing to a smaller buffer size which ends up allocated in a different heap, the heap structure is corrupted. This can only happen: * If heap checking is Comprehensive (meaning buffers are never shrunk in place) and the heap the buffer was originally allocated in is full. * Calling heap_caps_realloc() to deliberately move a buffer to a different capabilities type, and shrink it at the same time. Probable fix for https://github.com/espressif/esp-idf/issues/1582 Probably the same issue: https://www.esp32.com/viewtopic.php?f=2&t=4583 https://www.esp32.com/viewtopic.php?f=13&t=3717
51 lines
1.2 KiB
C
51 lines
1.2 KiB
C
/*
|
|
Generic test for realloc
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include "unity.h"
|
|
#include "sdkconfig.h"
|
|
#include "esp_heap_caps.h"
|
|
|
|
|
|
#ifndef CONFIG_HEAP_POISONING_COMPREHENSIVE
|
|
/* (can't realloc in place if comprehensive is enabled) */
|
|
|
|
TEST_CASE("realloc shrink buffer in place", "[heap]")
|
|
{
|
|
void *x = malloc(64);
|
|
TEST_ASSERT(x);
|
|
void *y = realloc(p, 48);
|
|
TEST_ASSERT_EQUAL_PTR(x, y);
|
|
}
|
|
|
|
#endif
|
|
|
|
TEST_CASE("realloc move data to a new heap type", "[heap]")
|
|
{
|
|
const char *test = "I am some test content to put in the heap";
|
|
char buf[64];
|
|
memset(buf, 0xEE, 64);
|
|
strlcpy(buf, test, 64);
|
|
|
|
char *a = malloc(64);
|
|
memcpy(a, buf, 64);
|
|
|
|
// move data from 'a' to IRAM
|
|
char *b = heap_caps_realloc(a, 64, MALLOC_CAP_EXEC);
|
|
TEST_ASSERT_NOT_NULL(b);
|
|
TEST_ASSERT_NOT_EQUAL(a, b);
|
|
TEST_ASSERT(heap_caps_check_integrity(MALLOC_CAP_INVALID, true));
|
|
TEST_ASSERT_EQUAL_HEX32_ARRAY(buf, b, 64/sizeof(uint32_t));
|
|
|
|
// Move data back to DRAM
|
|
char *c = heap_caps_realloc(b, 48, MALLOC_CAP_8BIT);
|
|
TEST_ASSERT_NOT_NULL(c);
|
|
TEST_ASSERT_NOT_EQUAL(b, c);
|
|
TEST_ASSERT(heap_caps_check_integrity(MALLOC_CAP_INVALID, true));
|
|
TEST_ASSERT_EQUAL_HEX8_ARRAY(buf, c, 48);
|
|
|
|
free(c);
|
|
}
|