rx_task栈空间不足***ERROR*** A stack overflow in task uart_rx_task has been detected.

[GalaxyNeo]

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1. static void rx_task(void *arg)
2. {
3.     static const char *RX_TASK_TAG = "RX_TASK";
4.     esp_log_level_set(RX_TASK_TAG, ESP_LOG_INFO);
5.     uint8_t* RXdata = (uint8_t*) malloc(RX_BUF_SIZE+1);
6.  
7.     while (1) {
8.         const int rxBytes = uart_read_bytes(UART_NUM_2, RXdata, RX_BUF_SIZE, 2000 / portTICK_PERIOD_MS);
9.         if (rxBytes > 0) {
10.             RXdata[rxBytes] = '\0'; // 添加字符串结束符
11.             ESP_LOGI(RX_TASK_TAG, "Read %d bytes: '%s'", rxBytes, RXdata);
12.             ESP_LOG_BUFFER_HEXDUMP(RX_TASK_TAG, RXdata, rxBytes, ESP_LOG_INFO);
13.             //esp_mqtt_client_publish(MQTT_client, AliyunPublishTopic_user_update, (char *)RXdata, rxBytes, 1, 0);
14.  
15.             // 构建 JSON 字符串
16.             char json_message[512]; // 假设消息长度不超过 512 个字符
17.             snprintf(json_message, sizeof(json_message), "{\"method\":\"thing.service.property.set\",\"id\":\"1428164640\",\"params\":{\"MS72SF1:RemainParkSpace\":%s},\"version\":\"1.0.0\"}", RXdata);
18.             esp_mqtt_client_publish(MQTT_client, AliyunPublishTopic_user_update, json_message, strlen(json_message), 1, 0);
19.         }
20.     }
21.     free(RXdata);
22. }

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每当运行到 snprintf(json_message, sizeof(json_message), "{\"method\":\"thing.service.property.set\",\"id\":\"1428164640\",\"params\":{\"MS72SF1:RemainParkSpace\":%s},\"version\":\"1.0.0\"}", RXdata);这一句的时候，都会因为***ERROR*** A stack overflow in task uart_rx_task has been detected.而重启，是什么导致栈空间不足。