always crashes (interrupt watchdog timeout) in a spinlock when doing "heavy" Ethernet traffic on a wt32-eth01

[folkertvanheusden]

Board

WT-ETH01

Device Description

This is a regular esp32 with an ethernet-port bolted on.

Hardware Configuration

There's an SD-Card reader attached to pins

#define pin_SD_MISO 12
#define pin_SD_MOSI 13
#define pin_SD_SCLK 14
#define pin_SD_CS 15

Version

v3.0.6

IDE Name

PlatformIO

Operating System

Ubuntu Linux 24.10

Flash frequency

default

PSRAM enabled

no

Upload speed

115200

Description

The problem occurs with an iSCSI target running on the ESP32. During setup (DHCP, iSCSI logon) all is good.
Yet when regular i/o occurs (e.g. reads and writes to the device), an interrupt watchdog happens.

Sketch

Sofar I haven't been able to make a smaller sketch showing the behaviour.
The same 'sketch' runs fine on teensy and on linux (yes).

Debug Message

Guru Meditation Error: Core  0 panic'ed (Interrupt wdt timeout on CPU0). 

Core  0 register dump:
PC      : 0x4008c651  PS      : 0x00060535  A0      : 0x80168ce2  A1      : 0x3ffb2aa0  
A2      : 0x3ffbddec  A3      : 0xffffffff  A4      : 0x0000cdcd  A5      : 0xb33fffff  
A6      : 0xb48bfd02  A7      : 0x00060523  A8      : 0x8008c651  A9      : 0x3ffb2a80  
A10     : 0x00000000  A11     : 0xb33f5454  A12     : 0x0000abab  A13     : 0x00003126  
A14     : 0x3ffdac88  A15     : 0x00000004  SAR     : 0x00000015  EXCCAUSE: 0x00000005  
EXCVADDR: 0x00000000  LBEG    : 0x40088f34  LEND    : 0x40088f4a  LCOUNT  : 0xffffffff  


Backtrace: 0x4008c64e:0x3ffb2aa0 0x40168cdf:0x3ffb2ad0 0x4008c771:0x3ffb2af0 0x401679c2:0x3ffb2b10 0x40109396:0x3ffb2b50 0x40109596:0x3ffb2b70 0x40109af8
:0x3ffb2b90 0x4010af42:0x3ffb2bb0 0x400fab05:0x3ffb2bd0

That backtrace resolves to:

/Users/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/esp_hw_support/include/spinlock.h:112
/Users/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/freertos/FreeRTOS-Kernel/portable/xtensa/include/freertos/portmacro.h:575
/Users/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/freertos/FreeRTOS-Kernel/queue.c:2414
/Users/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/freertos/FreeRTOS-Kernel/queue.c:906
/Users/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/lwip/port/freertos/sys_arch.c:77
/Users/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/lwip/port/freertos/sys_arch.c:483
/Users/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/lwip/lwip/src/api/api_lib.c:1149
/Users/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/lwip/lwip/src/api/api_msg.c:1899
/Users/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/lwip/lwip/src/api/tcpip.c:202

### Other Steps to Reproduce

_No response_

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

- [X] I confirm I have checked existing issues, online documentation and Troubleshooting guide.

[folkertvanheusden]

Another backtrace gave:

/Users/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/esp_hw_support/cpu.c:423
/Users/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/esp_hw_support/include/spinlock.h:112
...