Guru Meditation Error: Core 0 panic'ed (StoreProhibited). Exception was unhandled.

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Problem Description

Hi, I wrote a simple A2DP sink to HTTP Server WAV to be able to stream a bluetooth device to a uPNP/DNLA player.

The application compiles and starts correctly, this is the serial output:

Connecting to WiFi.
Connected! Stream URL: http://192.168.1.39/stream.wav
Starting Bluetooth...
[I] A2DPStream.h : 142 - Connecting to A2DP-Streamer
[I] A2DPStream.h : 183 - Starting a2dp_sink...
[W] A2DPStream.h : 347 - ==> state: Connecting
E (11752) I2S: i2s_set_clk(1620): I2S0 has not installed yet
[ 11790][E][BluetoothA2DPOutput.cpp:170] set_sample_rate(): [BT_AV] i2s_set_clk failed with samplerate=44100
[W] A2DPStream.h : 347 - ==> state: Connected
[I] A2DPStream.h : 196 - a2dp_sink is connected...
Starting HTTP Server...
[I] CodecWAV.h : 577 - sample_rate: 44100
[I] CodecWAV.h : 578 - channels: 2
[I] CodecWAV.h : 589 - is_streamed! because length is 2147418112
[I] CodecWAV.h : 577 - sample_rate: 44100
[I] CodecWAV.h : 578 - channels: 2
[I] CodecWAV.h : 589 - is_streamed! because length is 4294967295
IP address: 192.168.1.39
System Ready.

Once I connect the HTTP player I receive this error:

[I] AudioServerT.h : 265 - New Client:
[ 40389][E][WiFiClient.cpp:67] fillBuffer(): Not enough memory to allocate buffer
[ 40397][E][WiFiClient.cpp:474] read(): fail on fd 49, errno: 11, "No more processes"
[I] AudioServerT.h : 265 - New Client:
[I] AudioServerT.h : 275 - Request: GET /stream.wav HTTP/1.1
[I] AudioServerT.h : 275 - Request: Host: 192.168.1.39
[I] AudioServerT.h : 275 - Request: User-Agent: curl/8.7.1
[I] AudioServerT.h : 275 - Request: Accept: */*
[I] AudioServerT.h : 275 - Request: 
[I] AudioEncodedServerT.h : 165 - sendReply - Returning encoded stream...
[I] StreamCopy.h : 63 - buffer_size=1024
Guru Meditation Error: Core  0 panic'ed (StoreProhibited). Exception was unhandled.

Core  0 register dump:
PC      : 0x4011630b  PS      : 0x00060d30  A0      : 0x801156e4  A1      : 0x3ffeb250  
A2      : 0x3fffe884  A3      : 0x000003cd  A4      : 0x000002ab  A5      : 0x00000080  
A6      : 0x3fffe88c  A7      : 0x00000000  A8      : 0x00001100  A9      : 0x3ffeb230  
A10     : 0x00000000  A11     : 0x3fffe88d  A12     : 0x000002ab  A13     : 0x00060023  
A14     : 0x00060021  A15     : 0x00000001  SAR     : 0x0000001a  EXCCAUSE: 0x0000001d  
EXCVADDR: 0x00000002  LBEG    : 0x40091d00  LEND    : 0x40091d16  LCOUNT  : 0xffffffff  


Backtrace: 0x40116308:0x3ffeb250 0x401156e1:0x3ffeb280 0x4014d089:0x3ffeb2a0 0x4013e6a1:0x3ffeb2e0 0x4013e637:0x3ffeb300

This is the decoded backtrace:

0x40116308: reassemble_and_dispatch at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/bt/host/bluedroid/hci/packet_fragmenter.c:178
0x40116308: reassemble_and_dispatch at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/bt/host/bluedroid/hci/packet_fragmenter.c:136
0x401156e1: hal_says_packet_ready at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/bt/host/bluedroid/hci/hci_layer.c:416
0x4014d089: hci_hal_h4_hdl_rx_packet at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/bt/host/bluedroid/hci/hci_hal_h4.c:471
0x4014d089: hci_upstream_data_handler at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/bt/host/bluedroid/hci/hci_hal_h4.c:231
0x4013e6a1: osi_thread_generic_event_handler at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/bt/common/osi/thread.c:425
0x4013e6a1: osi_thread_generic_event_handler at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/bt/common/osi/thread.c:418
0x4013e637: osi_thread_run at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/bt/common/osi/thread.c:165

Any help/suggestion is well accepted.

Device Description

M5Stack Atom Lite
M5Camera

Sketch

/**
 * ESP32 Bluetooth A2DP to HTTP WAV Streamer
 * * Flow: Bluetooth (Source) -> A2DPStream -> StreamCopy -> WAVEncoder -> AudioServer (HTTP)
 */

#include <Arduino.h>
#include <WiFi.h>

// 1. Include AudioTools
#include "AudioTools.h"
#include "AudioTools/Communication/AudioHttp.h"

// 2. Include the A2DP Library extensions
// Note: We use A2DPStream which wraps the ESP32-A2DP library into a streamable object
#include "AudioTools/Communication/A2DPStream.h"

// --- Configuration ---
const char *ssid = "***";
const char *password = "***";
const char *bt_name = "A2DP-Streamer";

// --- Global Objects ---

// The Audio Server acts as the Output destination (Sink)
// It creates a webserver on port 80
AudioEncoderServer server(new WAVEncoder(),ssid,password,);  

// The A2DP Stream acts as the Audio Source (Input)
// It internally manages the BluetoothA2DPSink
A2DPStream in;

void setup() {
  Serial.begin(115200);
  AudioLogger::instance().begin(Serial, AudioLogger::Info);

  // 1. Setup Wi-Fi
  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, password);

  Serial.print("Connecting to WiFi");
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println();
  Serial.print("Connected! Stream URL: http://");
  Serial.print(WiFi.localIP());
  Serial.println("/stream.wav");

  // 2. Setup A2DP Source
  Serial.println("Starting Bluetooth...");
  auto cfg = in.defaultConfig(RX_MODE);
  cfg.name = bt_name;
  in.begin(cfg); 

  // // 3. Setup HTTP Server
  Serial.println("Starting HTTP Server...");
  server.begin(in);
  
  Serial.println("System Ready.");
}

void loop() {
  // This is the core engine. It checks if data is available from Bluetooth
  // and copies it to the HTTP server buffer.
  // The AudioServer handles client connections automatically in the background.
  server.doLoop();
}

Other Steps to Reproduce

Compile and upload, connect bluetooth device, open http endpoint

What is your development environment (incl. core version info)

PlatformIO

[env:esp32dev]
platform = espressif32
board = m5stack-atom
framework = arduino
monitor_speed = 115200
upload_speed = 115200

; High CPU frequency is recommended for audio processing
board_build.f_cpu = 240000000L

; Increase partition size for app (Audio libraries are large)
board_build.partitions = huge_app.csv

lib_deps =
    ; The core audio framework
    https://github.com/pschatzmann/arduino-audio-tools.git
    ; The Bluetooth A2DP library
    https://github.com/pschatzmann/ESP32-A2DP.git

build_flags =
    -DCORE_DEBUG_LEVEL=1
    ; Essential to prevent WiFi sleep from killing the audio stream jitter
    -DCONFIG_WIFI_ENABLED=1

I have checked existing issues, discussions and online documentation (incl. the Wiki)

• I confirm I have checked existing issues, discussions and online documentation