Arduino ESP32 3.3.2 SPIFFS.begin(true) floods Serial with "task_wdt: esp_task_wdt_reset(707): task not found" and takes 30 seconds

[PhiJu5]

Board

DOIT ESP32 DEVKIT V1

Device Description

------------------------------------------
Flash Info:
------------------------------------------
  Chip Size         :  4194304 B (4 MB)
  Block Size        :    65536 B (  64.0 KB)
  Sector Size       :     4096 B (   4.0 KB)
  Page Size         :      256 B (   0.2 KB)
  Bus Speed         : 80 MHz
  Flash Frequency   : 80 MHz (source: 80 MHz, divider: 1)
  Bus Mode          : DIO
------------------------------------------
Partitions Info:
------------------------------------------
                nvs : addr: 0x00009000, size:    20.0 KB, type: DATA, subtype: NVS
            otadata : addr: 0x0000E000, size:     8.0 KB, type: DATA, subtype: OTA
               app0 : addr: 0x00010000, size:  1280.0 KB, type:  APP, subtype: OTA_0
               app1 : addr: 0x00150000, size:  1280.0 KB, type:  APP, subtype: OTA_1
             spiffs : addr: 0x00290000, size:  1408.0 KB, type: DATA, subtype: SPIFFS
           coredump : addr: 0x003F0000, size:    64.0 KB, type: DATA, subtype: COREDUMP
------------------------------------------
Software Info:
------------------------------------------
  Compile Date/Time : Oct 17 2025 09:08:33
  Compile Host OS   : windows
  ESP-IDF Version   : v5.5.1-255-g07e9bf4970
  Arduino Version   : 3.3.2
------------------------------------------
Board Info:
------------------------------------------
  Arduino Board     : ESP32_DEV
  Arduino Variant   : doitESP32devkitV1
  Arduino FQBN      : esp32:esp32:esp32doit-devkit-v1:UploadSpeed=921600,FlashFreq=80,DebugLevel=verbose,EraseFlash=all
============ Before Setup End ============

Hardware Configuration

Default

Version

v3.3.2

Type

Bug

IDE Name

ARDUINO IDE 2.3.6

Operating System

WIN11

Flash frequency

80MHZ

PSRAM enabled

no

Upload speed

921600

Description

Arduino ESP32 3.3.2 SPIFFS.begin(true) floods Serial with "task_wdt: esp_task_wdt_reset(707): task not found" and takes 30 seconds

Core debug level is none.

spiffsOk = SPIFFS.begin(true);

Arduino ESP32 1.0.4: no such behavior.

------------------------------------------
Flash Info:
------------------------------------------
  Chip Size         :  4194304 B (4 MB)
  Block Size        :    65536 B (  64.0 KB)
  Sector Size       :     4096 B (   4.0 KB)
  Page Size         :      256 B (   0.2 KB)
  Bus Speed         : 80 MHz
  Flash Frequency   : 80 MHz (source: 80 MHz, divider: 1)
  Bus Mode          : DIO
------------------------------------------
Partitions Info:
------------------------------------------
                nvs : addr: 0x00009000, size:    20.0 KB, type: DATA, subtype: NVS
            otadata : addr: 0x0000E000, size:     8.0 KB, type: DATA, subtype: OTA
               app0 : addr: 0x00010000, size:  1280.0 KB, type:  APP, subtype: OTA_0
               app1 : addr: 0x00150000, size:  1280.0 KB, type:  APP, subtype: OTA_1
             spiffs : addr: 0x00290000, size:  1408.0 KB, type: DATA, subtype: SPIFFS
           coredump : addr: 0x003F0000, size:    64.0 KB, type: DATA, subtype: COREDUMP
------------------------------------------
Software Info:
------------------------------------------
  Compile Date/Time : Oct 17 2025 09:08:33
  Compile Host OS   : windows
  ESP-IDF Version   : v5.5.1-255-g07e9bf4970
  Arduino Version   : 3.3.2
------------------------------------------
Board Info:
------------------------------------------
  Arduino Board     : ESP32_DEV
  Arduino Variant   : doitESP32devkitV1
  Arduino FQBN      : esp32:esp32:esp32doit-devkit-v1:UploadSpeed=921600,FlashFreq=80,DebugLevel=verbose,EraseFlash=all
============ Before Setup End ============

Sketch

#include <SPIFFS.h>

void setup() {
SPIFFS.begin(true);
}

void loop() {
}

Debug Message

------------------------------------------
Flash Info:
------------------------------------------
  Chip Size         :  4194304 B (4 MB)
  Block Size        :    65536 B (  64.0 KB)
  Sector Size       :     4096 B (   4.0 KB)
  Page Size         :      256 B (   0.2 KB)
  Bus Speed         : 80 MHz
  Flash Frequency   : 80 MHz (source: 80 MHz, divider: 1)
  Bus Mode          : DIO
------------------------------------------
Partitions Info:
------------------------------------------
                nvs : addr: 0x00009000, size:    20.0 KB, type: DATA, subtype: NVS
            otadata : addr: 0x0000E000, size:     8.0 KB, type: DATA, subtype: OTA
               app0 : addr: 0x00010000, size:  1280.0 KB, type:  APP, subtype: OTA_0
               app1 : addr: 0x00150000, size:  1280.0 KB, type:  APP, subtype: OTA_1
             spiffs : addr: 0x00290000, size:  1408.0 KB, type: DATA, subtype: SPIFFS
           coredump : addr: 0x003F0000, size:    64.0 KB, type: DATA, subtype: COREDUMP
------------------------------------------
Software Info:
------------------------------------------
  Compile Date/Time : Oct 17 2025 09:08:33
  Compile Host OS   : windows
  ESP-IDF Version   : v5.5.1-255-g07e9bf4970
  Arduino Version   : 3.3.2
------------------------------------------
Board Info:
------------------------------------------
  Arduino Board     : ESP32_DEV
  Arduino Variant   : doitESP32devkitV1
  Arduino FQBN      : esp32:esp32:esp32doit-devkit-v1:UploadSpeed=921600,FlashFreq=80,DebugLevel=verbose,EraseFlash=all
============ Before Setup End ============

Other Steps to Reproduce

No response

I have checked existing issues, online documentation and the Troubleshooting Guide

• I confirm I have checked existing issues, online documentation and Troubleshooting guide.

[PhiJu5]

Arduino ESP32 1.0.4: no such behavior.