Calling SD.begin() when no SD-card is inserted and CONFIG_DISABLE_HAL_LOCKS is not set causes LoadProhibited error

[Gelemikke]

Board

LilyGo T-SIM7000, LilyGo T-SIM7600

Device Description

Hardware Configuration

Version

v3.0.4

IDE Name

PlatformIO

Operating System

Windows 11

Flash frequency

40MHz

PSRAM enabled

yes

Upload speed

115200

Description

Calling SD.begin() when no SD card is inserted and CONFIG_DISABLE_HAL_LOCKS is not set in sdkconfig causes a LoadProhibited error and crashes the code. The expectation is that SD.begin() would instead return false when no SD card is inserted.

Following the backtrace, the error is caused when xSemaphoreGive(spi->lock); is called in void spiEndTransaction(spi_t *spi). I assume this fails because spi->lock does not point to a valid mutex. However, I can't figure out why that would be the case since do {} while (xSemaphoreTake(spi->lock, portMAX_DELAY) != pdPASS) appears to be called a little bit earlier in sdcard_uninit and there it does not throw an error.

I unfortunately don't have a working debugger at the moment, so I can't properly step through the code in any more detail. Setting CONFIG_DISABLE_HAL_LOCKS=y in sdkconfig appears to be a working remedy but has its side effects as it disables all HAL mutexes.

Sketch

#include <Arduino.h>
#include <FS.h>
#include <SPI.h>
#include <SD.h>

#define SD_MISO             2
#define SD_MOSI             15
#define SD_SCLK             14
#define SD_CS               13

extern "C" void app_main()
{
    initArduino();
    //Initialize SDCard
    SPI.begin(SD_SCLK, SD_MISO, SD_MOSI, SD_CS);
    pinMode(SD_CS,OUTPUT);
    digitalWrite(SD_CS,HIGH);

    if (SD.begin(SD_CS)){ // This crashes if no SD-card is inserted and CONFIG_DISABLE_HAL_LOCKS is not set

    }
}

Debug Message

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

Core  0 register dump:
PC      : 0x400d8f3b  PS      : 0x00060730  A0      : 0x800d1ae1  A1      : 0x3ffbbb90
A2      : 0xcc491807  A3      : 0x00000000  A4      : 0x00000014  A5      : 0x00000063  
A6      : 0x00000063  A7      : 0x00000054  A8      : 0x80085d55  A9      : 0x3ffbbb70
A10     : 0x3ffb8000  A11     : 0x00000000  A12     : 0x00000000  A13     : 0x00000000  
A14     : 0xb33fffff  A15     : 0xb33fffff  SAR     : 0x0000001f  EXCCAUSE: 0x0000001c
EXCVADDR: 0xcc49180b  LBEG    : 0x40089f89  LEND    : 0x40089f99  LCOUNT  : 0xfffffffc  


Backtrace: 0x400d8f38:0x3ffbbb90 0x400d1ade:0x3ffbbbb0 0x400d2c6e:0x3ffbbbd0 0x400d1ca3:0x3ffbbc00 0x400d1845:0x3ffbbc30 0x400fc45e:0x3ffbbc60 0x4008e6ba:0x3ffbbc80
  #0  0x400d8f38 in spiEndTransaction at C:/Users/mikfr01/.platformio/packages/framework-arduinoespressif32/cores/esp32/esp32-hal-spi.c:1126
  #1  0x400d1ade in SPIClass::endTransaction() at C:/Users/mikfr01/.platformio/packages/framework-arduinoespressif32/libraries/SPI/src/SPI.cpp:193
  #2  0x400d2c6e in sdcard_uninit(unsigned char) at C:/Users/mikfr01/.platformio/packages/framework-arduinoespressif32/libraries/SD/src/sd_diskio.cpp:451
      (inlined by) sdcard_uninit(unsigned char) at C:/Users/mikfr01/.platformio/packages/framework-arduinoespressif32/libraries/SD/src/sd_diskio.cpp:685
  #3  0x400d1ca3 in fs::SDFS::begin(unsigned char, SPIClass&, unsigned long, char const*, unsigned char, bool) at C:/Users/mikfr01/.platformio/packages/framework-arduinoespressif32/libraries/SD/src/SD.cpp:39
  #4  0x400d1845 in app_main at src/main.cpp:20
  #5  0x400fc45e in main_task at C:\Users\mikfr01\.platformio\packages\framework-espidf\components\freertos/app_startup.c:208 (discriminator 13)
  #6  0x4008e6ba in vPortTaskWrapper at C:\Users\mikfr01\.platformio\packages\framework-espidf\components\freertos\FreeRTOS-Kernel\portable\xtensa/port.c:162

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.

[P-R-O-C-H-Y]

Hi @Gelemikke, I am unable to reproduce the issue using Arduino IDE.
Looks you are using Arduino as a component in IDF. What IDF version are you using?

[Gelemikke]

@P-R-O-C-H-Y Yes, thats true! I'm running ESP-IDF version 5.1.4.240801

[P-R-O-C-H-Y]

Thanks for quick response, Will try to reproduce there.

[P-R-O-C-H-Y]

I can confirm the crash using Arduino as component. I will take look on what's wrong there. Thank you for reporting.

[P-R-O-C-H-Y]

This issue was solved by #10122. The fix will be available in the 3.0.5 release.
I am closing this as solved.