From dc1a635a97bbbebd74d965447384c20d34d08526 Mon Sep 17 00:00:00 2001
From: Piyush Shah <piyush.shah@espressif.com>
Date: Mon, 30 Mar 2020 19:58:43 +0530
Subject: [PATCH] esp_mqtt_abort_connection: Fixed an issue which could result
 in a race condition and subsequent crash

---
 mqtt_client.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/mqtt_client.c b/mqtt_client.c
index 9372512..3186618 100644
--- a/mqtt_client.c
+++ b/mqtt_client.c
@@ -571,6 +571,7 @@ static esp_err_t esp_mqtt_connect(esp_mqtt_client_handle_t client, int timeout_m
 
 static esp_err_t esp_mqtt_abort_connection(esp_mqtt_client_handle_t client)
 {
+    MQTT_API_LOCK(client);
     esp_transport_close(client->transport);
     client->wait_timeout_ms = client->config->reconnect_timeout_ms;
     client->reconnect_tick = platform_tick_get_ms();
@@ -579,6 +580,7 @@ static esp_err_t esp_mqtt_abort_connection(esp_mqtt_client_handle_t client)
     client->event.event_id = MQTT_EVENT_DISCONNECTED;
     client->wait_for_ping_resp = false;
     esp_mqtt_dispatch_event_with_msgid(client);
+    MQTT_API_UNLOCK(client);
     return ESP_OK;
 }