ESP32-C3 Guru Meditation Error: Core 0 panic'ed (Instruction access fault)

serge_t · February 24, 2026, 5:27pm

I try to run a matter example (MatterCommissionTest.ino) on a ESP32-C3 super mini. I have done all the recommanded settings : Huge APP, Erase all flash, etc. But the board always reboot with the error message "Guru Meditation Error: Core 0 panic'ed (Instruction access fault). Exception was unhandled."

I don't see anything else in the full verbose log that can help me find the problem. Do you have any idea?

Here is the complete verbose log:

Rebooting...
ESP-ROM:esp32c3-api1-20210207
Build:Feb  7 2021
rst:0xc (RTC_SW_CPU_RST),boot:0xd (SPI_FAST_FLASH_BOOT)
Saved PC:0x40048b92
SPIWP:0xee
mode:DIO, clock div:1
load:0x3fcd5820,len:0x110c
load:0x403cbf10,len:0xb54
load:0x403ce710,len:0x2f8c
entry 0x403cbf10
[    13][V][esp32-hal-periman.c:235] perimanSetBusDeinit(): Deinit function for type USB_DM (38) successfully set to 0x42001338
[    24][V][esp32-hal-periman.c:160] perimanSetPinBus(): Pin 18 successfully set to type USB_DM (38) with bus 0x3fc98f74
[    35][V][esp32-hal-periman.c:235] perimanSetBusDeinit(): Deinit function for type USB_DP (39) successfully set to 0x42001338
[    46][V][esp32-hal-periman.c:160] perimanSetPinBus(): Pin 19 successfully set to type USB_DP (39) with bus 0x3fc98f74
=========== Before Setup Start ===========
Chip Info:
------------------------------------------
  Model             : ESP32-C3
  Package           : 0
  Revision          : 0.04
  Cores             : 1
  CPU Frequency     : 160 MHz
  XTAL Frequency    : 40 MHz
  Features Bitfield : 0x00000012
  Embedded Flash    : No
  Embedded PSRAM    : No
  2.4GHz WiFi       : Yes
  Classic BT        : No
  BT Low Energy     : Yes
  IEEE 802.15.4     : No
------------------------------------------
INTERNAL Memory Info:
------------------------------------------
  Total Size        :   222556 B ( 217.3 KB)
  Free Bytes        :   181424 B ( 177.2 KB)
  Allocated Bytes   :    36604 B (  35.7 KB)
  Minimum Free Bytes:   181424 B ( 177.2 KB)
  Largest Free Block:   114676 B ( 112.0 KB)
------------------------------------------
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          : QIO
------------------------------------------
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:  3072.0 KB, type:  APP, subtype: OTA_0
             spiffs : addr: 0x00310000, size:   896.0 KB, type: DATA, subtype: SPIFFS
           coredump : addr: 0x003F0000, size:    64.0 KB, type: DATA, subtype: COREDUMP
------------------------------------------
Software Info:
------------------------------------------
  Compile Date/Time : Feb 24 2026 12:03:21
  Compile Host OS   : windows
  ESP-IDF Version   : v5.5.2-729-g87912cd291
  Arduino Version   : 3.3.7
------------------------------------------
Board Info:
------------------------------------------
  Arduino Board     : ESP32C3_DEV
  Arduino Variant   : esp32c3
  Arduino FQBN      : esp32:esp32:esp32c3:UploadSpeed=921600,CDCOnBoot=cdc,CPUFreq=160,FlashFreq=80,FlashMode=qio,FlashSize=4M,PartitionScheme=huge_app,DebugLevel=verbose,EraseFlash=all,JTAGAdapter=default,ZigbeeMode=default
============ Before Setup End ============
[   167][V][esp32-hal-periman.c:251] perimanClearBusDeinit(): Deinit function for type UART_RX (2) cleared
[   167][V][esp32-hal-periman.c:251] perimanClearBusDeinit(): Deinit function for type UART_TX (3) cleared
[   168][V][esp32-hal-periman.c:251] perimanClearBusDeinit(): Deinit function for type UART_CTS (4) cleared
[   168][V][esp32-hal-periman.c:251] perimanClearBusDeinit(): Deinit function for type UART_RTS (5) cleared
[   169][V][esp32-hal-periman.c:160] perimanSetPinBus(): Pin 20 successfully set to type UART_RX (2) with bus 0x3fc951b8
[   169][V][esp32-hal-periman.c:235] perimanSetBusDeinit(): Deinit function for type UART_RX (2) successfully set to 0x420052fc
[   170][V][esp32-hal-periman.c:160] perimanSetPinBus(): Pin 21 successfully set to type UART_TX (3) with bus 0x3fc951b8
[   170][V][esp32-hal-periman.c:235] perimanSetBusDeinit(): Deinit function for type UART_TX (3) successfully set to 0x420051c4
[   171][I][esp32-hal-periman.c:141] perimanSetPinBus(): Pin 18 already has type USB_DM (38) with bus 0x3fc98f74
[   171][I][esp32-hal-periman.c:141] perimanSetPinBus(): Pin 19 already has type USB_DP (39) with bus 0x3fc98f74
[   176][V][MatterEndPoint.cpp:66] setEndPointId(): Endpoint ID set to 1
[   176][I][MatterOnOffLight.cpp:81] begin(): On-Off Light created with endpoint_id 1
btdm: bss start 0x3fcdf0a8, len 40
btdm: data start 0x3fcdf09c, data start rom 0x400591fc, len 12
MAGIC fadebead VERSION 0001000a
MAGIC fadebead VERSION 00010001
Guru Meditation Error: Core  0 panic'ed (Instruction access fault). Exception was unhandled.

Core  0 register dump:
MEPC    : 0x00000000  RA      : 0x420ab268  SP      : 0x3fcc3470  GP      : 0x3fc95800  
TP      : 0x3fcc36f0  T0      : 0x420a7096  T1      : 0x0000000f  T2      : 0x00000001  
S0/FP   : 0x3fce0000  S1      : 0x3fce0000  A0      : 0x00000001  A1      : 0x0000011c  
A2      : 0x3fcc4948  A3      : 0x00000003  A4      : 0x00000000  A5      : 0x00000000  
A6      : 0x80000000  A7      : 0x00000010  S2      : 0x3fce0000  S3      : 0x3fce0000  
S4      : 0x3fce0000  S5      : 0x3fcdf96c  S6      : 0x3fca03f8  S7      : 0x3fca03f0  
S8      : 0x00000000  S9      : 0x00000000  S10     : 0x00000000  S11     : 0x00000000  
T3      : 0x00000000  T4      : 0x004b0005  T5      : 0x01010000  T6      : 0x00000064  
MSTATUS : 0x00001881  MTVEC   : 0x40380001  MCAUSE  : 0x00000001  MTVAL   : 0x00000000  
MHARTID : 0x00000000  

Stack memory:
3fcc3470: 0x00000000 0x004b0005 0x3fcdf96c 0x420a70a0 0x00000001 0x3fcc3528 0x00000001 0x00000001
3fcc3490: 0x00fff000 0x0000000c 0x00000000 0x600c2000 0x80000000 0x00000010 0x3fc97000 0x3fc90006
3fcc34b0: 0x3fc97000 0x00000001 0x3fca03f8 0x3fca03f0 0x3fca03f8 0x00000001 0x3fc97000 0x3fc97000
3fcc34d0: 0x3fc97000 0x3fcc3528 0x00000001 0x42019104 0x3fcdf96c 0x0000005c 0x3fcdf96c 0x40390ef6
3fcc34f0: 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xbaad5678 0xa5a5a5a5 0x0000005c 0x3fca0409 0x3fcab000
3fcc3510: 0x3fcab000 0x3fca0418 0x00000000 0x4209ca38 0xa5a5a5a5 0x00000804 0x5a5aa5a5 0x02509280
3fcc3530: 0x00171000 0x00000601 0x001e0000 0x01000000 0x00000000 0x000b0000 0x00000001 0x00640001
3fcc3550: 0x00000064 0x01010000 0x004b0005 0x00000000 0x01000001 0x01000001 0x01010001 0x00000100
3fcc3570: 0x3fcab000 0x3fca0418 0x00000000 0x420508f8 0xa5a5a5a5 0xa5a5a5a5 0x3fca0409 0x00000001
3fcc3590: 0x3fcab000 0x3fca03e8 0x3fca0418 0x420512a0 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5
3fcc35b0: 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5
3fcc35d0: 0xa5a5a5a5 0x00000000 0x3fc95858 0x4204fce6 0x00000000 0x00000000 0x3fcbff44 0x190b340c
3fcc35f0: 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0x3fcab000 0x000000bc 0x3fca03e8 0x3fcc3648 0x4204f604
3fcc3610: 0x3fca03f8 0x00000001 0x3fca0409 0x3fcab000 0x00000001 0x3fca0000 0x3fca03e8 0x4204fa96
3fcc3630: 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xffffffff 0xa5a5a5a5 0x00a5a5a5 0x00000002 0x00000000
3fcc3650: 0x42051530 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
3fcc3670: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x190b340c
3fcc3690: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
3fcc36b0: 0x00000000 0x00000000 0x00000000 0x4038cce2 0x00000000 0x00000000 0x00000000 0x00000000
3fcc36d0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5
3fcc36f0: 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xbaad5678 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5
3fcc3710: 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5
3fcc3730: 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5
3fcc3750: 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5
3fcc3770: 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5
3fcc3790: 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5
3fcc37b0: 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5
3fcc37d0: 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5
3fcc37f0: 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5
3fcc3810: 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5
3fcc3830: 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5
3fcc3850: 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5



ELF file SHA256: cc298acf2

Rebooting...

maxgerhardt · February 24, 2026, 5:53pm

If you followed arduino-esp32/libraries/Matter/examples/MatterCommissionTest at 3.3.7 · espressif/arduino-esp32 · GitHub to the letter and are running the verbatim test sketch, then you've fund a bug. File it in https://github.com/espressif/arduino-esp32/issues

All the log indicates is that it's attempting to jump to a nullpointer (0x00000000). To further decode the error message, you must use https://github.com/dankeboy36/esp-exception-decoder/tree/1.1.1.

serge_t · February 24, 2026, 6:31pm

Thank you for your help @maxgerhardt I have submit a bug I'll let you know if there is any solution.

ptillisch · February 25, 2026, 12:09am

In order to make relevant information available to any who are interested in this subject, I'll share a link to the formal bug report @serge_t submitted to the developers of the "esp32" boards platform:

github.com/espressif/arduino-esp32

ESP32-C3 Guru Meditation Error: Core 0 panic'ed (Instruction access fault)

opened 06:27PM - 24 Feb 26 UTC

toley00-arduino

Status: Awaiting triage Area: Matter

### Board ESP32-C3 Super Mini ### Device Description Only the Board itself #…## Hardware Configuration Nothing except USB ### Version v3.3.7 ### Type Bug ### IDE Name Arduino IDE 2.3.7 ### Operating System Windows 11 ### Flash frequency 80 MHz ### PSRAM enabled yes ### Upload speed 921600 ### Description I try to run a matter example (MatterCommissionTest.ino) on a ESP32-C3 super mini. I have done all the recommanded settings : Huge APP, Erase all flash, etc. But the board always reboot with the error message "Guru Meditation Error: Core 0 panic'ed (Instruction access fault). Exception was unhandled." ### Sketch ```cpp MatterCommissionTest example with only SSID and PASSWORD modified ``` ### Debug Message ```plain `Rebooting... ESP-ROM:esp32c3-api1-20210207 Build:Feb 7 2021 rst:0xc (RTC_SW_CPU_RST),boot:0xd (SPI_FAST_FLASH_BOOT) Saved PC:0x40048b92 SPIWP:0xee mode:DIO, clock div:1 load:0x3fcd5820,len:0x110c load:0x403cbf10,len:0xb54 load:0x403ce710,len:0x2f8c entry 0x403cbf10 [ 13][V][esp32-hal-periman.c:235] perimanSetBusDeinit(): Deinit function for type USB_DM (38) successfully set to 0x42001338 [ 24][V][esp32-hal-periman.c:160] perimanSetPinBus(): Pin 18 successfully set to type USB_DM (38) with bus 0x3fc98f74 [ 35][V][esp32-hal-periman.c:235] perimanSetBusDeinit(): Deinit function for type USB_DP (39) successfully set to 0x42001338 [ 46][V][esp32-hal-periman.c:160] perimanSetPinBus(): Pin 19 successfully set to type USB_DP (39) with bus 0x3fc98f74 =========== Before Setup Start =========== Chip Info: ------------------------------------------ Model : ESP32-C3 Package : 0 Revision : 0.04 Cores : 1 CPU Frequency : 160 MHz XTAL Frequency : 40 MHz Features Bitfield : 0x00000012 Embedded Flash : No Embedded PSRAM : No 2.4GHz WiFi : Yes Classic BT : No BT Low Energy : Yes IEEE 802.15.4 : No ------------------------------------------ INTERNAL Memory Info: ------------------------------------------ Total Size : 222556 B ( 217.3 KB) Free Bytes : 181424 B ( 177.2 KB) Allocated Bytes : 36604 B ( 35.7 KB) Minimum Free Bytes: 181424 B ( 177.2 KB) Largest Free Block: 114676 B ( 112.0 KB) ------------------------------------------ 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 : QIO ------------------------------------------ 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: 3072.0 KB, type: APP, subtype: OTA_0 spiffs : addr: 0x00310000, size: 896.0 KB, type: DATA, subtype: SPIFFS coredump : addr: 0x003F0000, size: 64.0 KB, type: DATA, subtype: COREDUMP ------------------------------------------ Software Info: ------------------------------------------ Compile Date/Time : Feb 24 2026 12:03:21 Compile Host OS : windows ESP-IDF Version : v5.5.2-729-g87912cd291 Arduino Version : 3.3.7 ------------------------------------------ Board Info: ------------------------------------------ Arduino Board : ESP32C3_DEV Arduino Variant : esp32c3 Arduino FQBN : esp32:esp32:esp32c3:UploadSpeed=921600,CDCOnBoot=cdc,CPUFreq=160,FlashFreq=80,FlashMode=qio,FlashSize=4M,PartitionScheme=huge_app,DebugLevel=verbose,EraseFlash=all,JTAGAdapter=default,ZigbeeMode=default ============ Before Setup End ============ [ 167][V][esp32-hal-periman.c:251] perimanClearBusDeinit(): Deinit function for type UART_RX (2) cleared [ 167][V][esp32-hal-periman.c:251] perimanClearBusDeinit(): Deinit function for type UART_TX (3) cleared [ 168][V][esp32-hal-periman.c:251] perimanClearBusDeinit(): Deinit function for type UART_CTS (4) cleared [ 168][V][esp32-hal-periman.c:251] perimanClearBusDeinit(): Deinit function for type UART_RTS (5) cleared [ 169][V][esp32-hal-periman.c:160] perimanSetPinBus(): Pin 20 successfully set to type UART_RX (2) with bus 0x3fc951b8 [ 169][V][esp32-hal-periman.c:235] perimanSetBusDeinit(): Deinit function for type UART_RX (2) successfully set to 0x420052fc [ 170][V][esp32-hal-periman.c:160] perimanSetPinBus(): Pin 21 successfully set to type UART_TX (3) with bus 0x3fc951b8 [ 170][V][esp32-hal-periman.c:235] perimanSetBusDeinit(): Deinit function for type UART_TX (3) successfully set to 0x420051c4 [ 171][I][esp32-hal-periman.c:141] perimanSetPinBus(): Pin 18 already has type USB_DM (38) with bus 0x3fc98f74 [ 171][I][esp32-hal-periman.c:141] perimanSetPinBus(): Pin 19 already has type USB_DP (39) with bus 0x3fc98f74 [ 176][V][MatterEndPoint.cpp:66] setEndPointId(): Endpoint ID set to 1 [ 176][I][MatterOnOffLight.cpp:81] begin(): On-Off Light created with endpoint_id 1 btdm: bss start 0x3fcdf0a8, len 40 btdm: data start 0x3fcdf09c, data start rom 0x400591fc, len 12 MAGIC fadebead VERSION 0001000a MAGIC fadebead VERSION 00010001 Guru Meditation Error: Core 0 panic'ed (Instruction access fault). Exception was unhandled. Core 0 register dump: MEPC : 0x00000000 RA : 0x420ab268 SP : 0x3fcc3470 GP : 0x3fc95800 TP : 0x3fcc36f0 T0 : 0x420a7096 T1 : 0x0000000f T2 : 0x00000001 S0/FP : 0x3fce0000 S1 : 0x3fce0000 A0 : 0x00000001 A1 : 0x0000011c A2 : 0x3fcc4948 A3 : 0x00000003 A4 : 0x00000000 A5 : 0x00000000 A6 : 0x80000000 A7 : 0x00000010 S2 : 0x3fce0000 S3 : 0x3fce0000 S4 : 0x3fce0000 S5 : 0x3fcdf96c S6 : 0x3fca03f8 S7 : 0x3fca03f0 S8 : 0x00000000 S9 : 0x00000000 S10 : 0x00000000 S11 : 0x00000000 T3 : 0x00000000 T4 : 0x004b0005 T5 : 0x01010000 T6 : 0x00000064 MSTATUS : 0x00001881 MTVEC : 0x40380001 MCAUSE : 0x00000001 MTVAL : 0x00000000 MHARTID : 0x00000000 Stack memory: 3fcc3470: 0x00000000 0x004b0005 0x3fcdf96c 0x420a70a0 0x00000001 0x3fcc3528 0x00000001 0x00000001 3fcc3490: 0x00fff000 0x0000000c 0x00000000 0x600c2000 0x80000000 0x00000010 0x3fc97000 0x3fc90006 3fcc34b0: 0x3fc97000 0x00000001 0x3fca03f8 0x3fca03f0 0x3fca03f8 0x00000001 0x3fc97000 0x3fc97000 3fcc34d0: 0x3fc97000 0x3fcc3528 0x00000001 0x42019104 0x3fcdf96c 0x0000005c 0x3fcdf96c 0x40390ef6 3fcc34f0: 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xbaad5678 0xa5a5a5a5 0x0000005c 0x3fca0409 0x3fcab000 3fcc3510: 0x3fcab000 0x3fca0418 0x00000000 0x4209ca38 0xa5a5a5a5 0x00000804 0x5a5aa5a5 0x02509280 3fcc3530: 0x00171000 0x00000601 0x001e0000 0x01000000 0x00000000 0x000b0000 0x00000001 0x00640001 3fcc3550: 0x00000064 0x01010000 0x004b0005 0x00000000 0x01000001 0x01000001 0x01010001 0x00000100 3fcc3570: 0x3fcab000 0x3fca0418 0x00000000 0x420508f8 0xa5a5a5a5 0xa5a5a5a5 0x3fca0409 0x00000001 3fcc3590: 0x3fcab000 0x3fca03e8 0x3fca0418 0x420512a0 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 3fcc35b0: 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 3fcc35d0: 0xa5a5a5a5 0x00000000 0x3fc95858 0x4204fce6 0x00000000 0x00000000 0x3fcbff44 0x190b340c 3fcc35f0: 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0x3fcab000 0x000000bc 0x3fca03e8 0x3fcc3648 0x4204f604 3fcc3610: 0x3fca03f8 0x00000001 0x3fca0409 0x3fcab000 0x00000001 0x3fca0000 0x3fca03e8 0x4204fa96 3fcc3630: 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xffffffff 0xa5a5a5a5 0x00a5a5a5 0x00000002 0x00000000 3fcc3650: 0x42051530 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 3fcc3670: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x190b340c 3fcc3690: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 3fcc36b0: 0x00000000 0x00000000 0x00000000 0x4038cce2 0x00000000 0x00000000 0x00000000 0x00000000 3fcc36d0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 3fcc36f0: 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xbaad5678 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 3fcc3710: 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 3fcc3730: 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 3fcc3750: 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 3fcc3770: 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 3fcc3790: 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 3fcc37b0: 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 3fcc37d0: 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 3fcc37f0: 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 3fcc3810: 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 3fcc3830: 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 3fcc3850: 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 ELF file SHA256: cc298acf2 Rebooting...` ``` ### 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.

serge_t · February 26, 2026, 5:05pm

The issue has been investigated and for now the conclusion is:
"No... it also crashes after commissioning... we will have to create a new Arduino Core release in order to fix it."
So I will wait for the next update and try it again ;)

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ESP32-C3 Guru Meditation Error: Core 0 panic'ed (Instruction access fault)

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