使用uart_async_rxtxtasks例程，添加打印后会出现stack overflow

[june111]

硬件：ESP32-S3-WROOM-1
软件版本：V5.2.3
开发环境:VS Code
修改的代码如下

Code: Untitled.c Select all

static void rx_task(void *arg)

{

    static const char *RX_TASK_TAG = "RX_TASK";

    esp_log_level_set(RX_TASK_TAG, ESP_LOG_INFO);

    uint8_t* data = (uint8_t*) malloc(RX_BUF_SIZE + 1);

    //uint32_t userFree = 0;

    volatile int32_t userFree = 0;

    userFree = (int32_t)uxTaskGetStackHighWaterMark(NULL);

    ESP_LOGW(RX_TASK_TAG, "111:%d", 0);

    userFree = (int32_t)uxTaskGetStackHighWaterMark(NULL);

    ESP_LOGI(RX_TASK_TAG, "start is %ld", (int32_t)uxTaskGetStackHighWaterMark(NULL));

    userFree = (int32_t)uxTaskGetStackHighWaterMark(NULL);



    while (1) {

        ESP_LOGI(RX_TASK_TAG, "min free stack size is %ld", (int32_t)uxTaskGetStackHighWaterMark(NULL));

        userFree = (int32_t)uxTaskGetStackHighWaterMark(NULL);    

        const int rxBytes = uart_read_bytes(UART_NUM_1, data, RX_BUF_SIZE, 1000 / portTICK_PERIOD_MS);

        if (rxBytes > 0) {

            data[rxBytes] = 0;

            //userFree = uxTaskGetStackHighWaterMark(NULL);

            ESP_LOGI(RX_TASK_TAG, "Read %d bytes: '%s'", rxBytes, data);

            ESP_LOG_BUFFER_HEXDUMP(RX_TASK_TAG, data, rxBytes, ESP_LOG_INFO);

        }

    }

    ESP_LOGW(RX_TASK_TAG, "error:%d", 0);

    free(data);

}

异常日志如下：

Code: Untitled.txt Select all

I (318) main_task: Calling app_main()

W (35288) RX_TASK: 111:0

I (65258) RX_TASK: start is 68

I (98038) RX_TASK: min free stack size is 68

I (103248) tx_task: min free stack size is 1388

I (103248) TX_TASK: Wrote 11 bytes

I (103248) main: free is 2044

I (103248) main_task: Returned from app_main()

I (104248) RX_TASK: Read 11 bytes: 'Hello world'

I (108858) tx_task: min free stack size is 76

I (114978) TX_TASK: Wrote 11 bytes

I (114978) RX_TASK: 0x3fc9d36c   48 65 6c 6c 6f 20 77 6f  72 6c 64                 |Hello world|

I (123198) tx_task: min free stack size is 76

I (132958) TX_TASK: Wrote 11 bytes

I (133718) RX_TASK: min free stack size is 0



***ERROR*** A stack overflow in task uart_rx_task has been detected.

Setting breakpoint at 0x403759ed and returning...

--- 0x403759ed: panic_abort at D:/Programs/Espressif/frameworks/esp-idf-v5.2.3/components/esp_system/panic.c:466

疑问：
1、ESP_LOGW函数调用之后没有释放栈内存？
调用了一次ESP_LOGW(RX_TASK_TAG, "111:%d", 0);之后，后继查看uxTaskGetStackHighWaterMark(NULL)没有变回原来的大小。
2、是否不应该使用uxTaskGetStackHighWaterMark查看，但没有找到获取当前线程剩余栈空间大小的函数接口

调试过程请查看附件

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