Stack Smashing

[varun2200]

13:36:40.995 -> BLE Advertised Device found: Name: , Address: 4f:94:11:6f:26:4e, manufacturer data: 4c001005229870d425, txPower: 8, rssi: -74
13:36:40.995 -> BLE Advertised Device found: Name: , Address: 06:ad:cd:18:de:2f, manufacturer data: 06000109212a5b65e3ab75c44a6967734c656e6f766f, rssi: -96
13:36:42.531 -> Found our service
13:36:42.531 ->
13:36:42.531 -> Stack smashing protect failure!
13:36:42.531 ->
13:36:42.531 ->
13:36:42.531 -> Backtrace: 0x40082399:0x3ffc84c0 0x4009372d:0x3ffc84e0 0x400823aa:0x3ffc8500 0x400d5e92:0x3ffc8520 0x400d5f91:0x3ffc85c0 0x400d68c7:0x3ffc8610 0x400d69fe:0x3ffc86b0 0x400d235d:0x3ffc8710 0x400d256d:0x3ffc8750 0x400da2e0:0x3ffc8770

the BLE client application is restarting again and again when it attempts to connect to an ios device on which the server is hosted
And there is a stack smashing protect failure
I am not able to find where the issue is.
If the ble library is compatible with ios devices, it should work

[RASPIAUDIO]

exact same bug here

[RASPIAUDIO]

downgarded to ESP version 2.0.17 and no more crash but still no notification

[HexfeT78]

@varun2200 @RASPIAUDIO

Find the following function in the BLERemoteCharacteristic.cpp file and replace it with it. The problem will be solved.

void BLERemoteCharacteristic::retrieveDescriptors() {
  log_v(">> retrieveDescriptors() for characteristic: %s", getUUID().toString().c_str());

  // Remove any existing descriptors.
  removeDescriptors();  

  uint16_t offset = 0;
  esp_gattc_descr_elem_t result[10];  // Array to hold multiple results.
  while (true) {
    uint16_t count = 10;  // Number of descriptors to retrieve in each call.
    esp_gatt_status_t status = ::esp_ble_gattc_get_all_descr(
      getRemoteService()->getClient()->getGattcIf(), 
      getRemoteService()->getClient()->getConnId(), 
      getHandle(), 
      result, 
      &count, 
      offset
    );

    if (status == ESP_GATT_INVALID_OFFSET) {  // End of the entries.
      break;
    }

    if (status != ESP_GATT_OK) {
      log_e("esp_ble_gattc_get_all_descr: %s", BLEUtils::gattStatusToString(status).c_str());
      break;
    }

    if (count == 0) {
      break;
    }

    for (int i = 0; i < count; i++) {
      log_d("Found a descriptor: Handle: %d, UUID: %s", result[i].handle, BLEUUID(result[i].uuid).toString().c_str());

      BLERemoteDescriptor *pNewRemoteDescriptor = new BLERemoteDescriptor(result[i].handle, BLEUUID(result[i].uuid), this);
      m_descriptorMap.insert(std::pair<String, BLERemoteDescriptor *>(pNewRemoteDescriptor->getUUID().toString(), pNewRemoteDescriptor));
    }

    offset += count;  // Increment the offset by the number of descriptors retrieved.
  }

  log_v("<< retrieveDescriptors(): Found %d descriptors.", m_descriptorMap.size());
}