Esp32+lvgl+wifi=crash

Device : ESP32 devkit (4 MB flash, chip revision 1, ESP32-D0WDQ6)

ESP-IDF version : 4.3

Code source : lv_port_esp32 (lv_demo_widget) with wifi station connect task

Problem :
The problem only happens when I integrate a task that connects the esp32 to a wifi access point. In fact, the task is not even executed yet that I get a “Panic Core dump (LoadStore Error)”.
So the error does not come from an error in the task itself.

Console terminal result :

I (26) boot: ESP-IDF v4.3.1-dirty 2nd stage bootloader
I (26) boot: compile time 16:37:41
I (27) boot: chip revision: 1
I (30) boot_comm: chip revision: 1, min. bootloader chip revision: 0
I (37) boot.esp32: SPI Speed : 80MHz
I (41) boot.esp32: SPI Mode : DIO
I (46) boot.esp32: SPI Flash Size : 4MB
I (51) boot: Enabling RNG early entropy source…
I (56) boot: Partition Table:
I (60) boot: ## Label Usage Type ST Offset Length
I (67) boot: 0 nvs WiFi data 01 02 00009000 00006000
I (74) boot: 1 phy_init RF data 01 01 0000f000 00001000
I (82) boot: 2 factory factory app 00 00 00010000 00100000
I (89) boot: End of partition table
I (93) boot_comm: chip revision: 1, min. application chip revision: 0
I (100) esp_image: segment 0: paddr=00010020 vaddr=3f400020 size=9c1b0h (639408) map
I (302) esp_image: segment 1: paddr=000ac1d8 vaddr=3ffb0000 size=02f3ch ( 12092) load
I (306) esp_image: segment 2: paddr=000af11c vaddr=40080000 size=00efch ( 3836) load
I (309) esp_image: segment 3: paddr=000b0020 vaddr=400d0020 size=4a088h (303240) map
I (408) esp_image: segment 4: paddr=000fa0b0 vaddr=40080efc size=0e2b4h ( 58036) load
I (428) esp_image: segment 5: paddr=0010836c vaddr=50000000 size=00010h ( 16) load
I (436) boot: Loaded app from partition at offset 0x10000
I (436) boot: Disabling RNG early entropy source…
I (449) cpu_start: Pro cpu up.
I (449) cpu_start: Starting app cpu, entry point is 0x400813ec
0x400813ec: call_start_cpu1 at C:/Users/Utilisateur/esp/esp-idf/components/esp_system/port/cpu_start.c:141

I (0) cpu_start: App cpu up.
I (463) cpu_start: Pro cpu start user code
I (463) cpu_start: cpu freq: 240000000
I (463) cpu_start: Application information:
I (467) cpu_start: Project name: lvgl-demo
I (473) cpu_start: App version: 2.1.0.0
I (478) cpu_start: Compile time: May 3 2022 08:59:31
I (484) cpu_start: ELF file SHA256: 6721320b3e46e617…
I (490) cpu_start: ESP-IDF: v4.3.1-dirty
I (495) heap_init: Initializing. RAM available for dynamic allocation:
I (502) heap_init: At 3FFAE6E0 len 00001920 (6 KiB): DRAM
I (508) heap_init: At 3FFB3FE8 len 0002C018 (176 KiB): DRAM
I (515) heap_init: At 3FFE0440 len 00003AE0 (14 KiB): D/IRAM
I (521) heap_init: At 3FFE4350 len 0001BCB0 (111 KiB): D/IRAM
I (527) heap_init: At 4008F1B0 len 00010E50 (67 KiB): IRAM
I (534) spi_flash: detected chip: generic
I (538) spi_flash: flash io: dio
I (543) cpu_start: Starting scheduler on PRO CPU.
I (0) cpu_start: Starting scheduler on APP CPU.
I (553) I2C: i2c_initialisation
I (553) I2C: mcp23008_initialisation
I (563) gpio: GPIO[0]| InputEn: 0| OutputEn: 1| OpenDrain: 0| Pullup: 0| Pulldown: 0| Intr:0
I (573) gpio: GPIO[2]| InputEn: 0| OutputEn: 1| OpenDrain: 0| Pullup: 0| Pulldown: 0| Intr:0
I (583) gpio: GPIO[32]| InputEn: 1| OutputEn: 0| OpenDrain: 0| Pullup: 0| Pulldown: 0| Intr:3
I (593) gpio: GPIO[33]| InputEn: 1| OutputEn: 0| OpenDrain: 0| Pullup: 0| Pulldown: 0| Intr:3
I (603) gpio: GPIO[39]| InputEn: 1| OutputEn: 0| OpenDrain: 0| Pullup: 0| Pulldown: 0| Intr:3
I (603) gpio: GPIO[0]| InputEn: 0| OutputEn: 0| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0

Opening Non-Volatile Storage (NVS) handle… Done
Reading restart counter from NVS …
intervalle_lavage= 100
The value is not initialized yet!
I (633) lvgl_helpers: Display buffer size: 53248
I (633) lvgl_helpers: Initializing SPI master for FT81X
I (643) lvgl_helpers: Configuring SPI host VSPI_HOST (2)
I (643) lvgl_helpers: MISO pin: 19, MOSI pin: 23, SCLK pin: 18, IO2/WP pin: 16, IO3/HD pin: 4
I (663) lvgl_helpers: Max transfer size: 212992 (bytes)
I (663) lvgl_helpers: Initializing SPI bus…
I (663) disp_spi: Adding SPI device
I (673) disp_spi: Clock speed: 23000000Hz, mode: 0, CS pin: 5
I (753) FT81X: Switching to QIO mode
I (773) FT81X: DummyReadBits = 2
I (1773) FT81X: CHIP ID (Display EVE3) = 124
REG_FREQUENCY = 72000000
Guru Meditation Error: Core 0 panic’ed (LoadStoreError). Exception was unhandled.

Core 0 register dump:
PC : 0x40118fc0 PS : 0x00060f30 A0 : 0x800e0d4c A1 : 0x3ffbace0
0x40118fc0: lv_style_get_prop_inlined at C:\Users\Utilisateur\esp\esp-idf\lv_port_esp32_9\build/…/components/lvgl/src/misc/lv_style.h:373
(inlined by) lv_style_get_prop at C:\Users\Utilisateur\esp\esp-idf\lv_port_esp32_9\build/…/components/lvgl/src/misc/lv_style.c:214

A2 : 0x3f4867b8 A3 : 0x00001032 A4 : 0x3ffbad00 A5 : 0x00000000
A6 : 0x00000010 A7 : 0x00000001 A8 : 0x00000100 A9 : 0x00000000
A10 : 0x400f43d8 A11 : 0x400f43d8 A12 : 0x400f42d8 A13 : 0x00000040
0x400f43d8: lv_disp_draw_buf_init at C:\Users\Utilisateur\esp\esp-idf\lv_port_esp32_9\build/…/components/lvgl/src/hal/lv_hal_disp.c:108

0x400f43d8: lv_disp_draw_buf_init at C:\Users\Utilisateur\esp\esp-idf\lv_port_esp32_9\build/…/components/lvgl/src/hal/lv_hal_disp.c:108

0x400f42d8: lv_font_get_glyph_dsc_fmt_txt at C:\Users\Utilisateur\esp\esp-idf\lv_port_esp32_9\build/…/components/lvgl/src/font/lv_font_fmt_txt.c:150

A14 : 0x00001001 A15 : 0x00000000 SAR : 0x0000001d EXCCAUSE: 0x00000003
EXCVADDR: 0x400f43d8 LBEG : 0x400013f9 LEND : 0x4000140d LCOUNT : 0xfffffffa
0x400f43d8: lv_disp_draw_buf_init at C:\Users\Utilisateur\esp\esp-idf\lv_port_esp32_9\build/…/components/lvgl/src/hal/lv_hal_disp.c:108

Backtrace:0x40118fbd:0x3ffbace0 0x400e0d49:0x3ffbad00 0x400e0dac:0x3ffbad50 0x400de437:0x3ffbad80 0x400fb929:0x3ffbada0 0x400fc42e:0x3ffbae40 0x40117bb9:0x3ffbae80 0x400da9a3:0x3f
0x400e115d:0x3ffbaf20 0x400d82ae:0x3ffbaf40 0x400d979b:0x3ffbb050 0x400d987b:0x3ffbb070 0x400d6d37:0x3ffbb090 0x400d6df3:0x3ffbb0b0 0x4008afbd:0x3ffbb140
0x40118fbd: lv_style_get_prop_inlined at C:\Users\Utilisateur\esp\esp-idf\lv_port_esp32_9\build/…/components/lvgl/src/misc/lv_style.h:373
(inlined by) lv_style_get_prop at C:\Users\Utilisateur\esp\esp-idf\lv_port_esp32_9\build/…/components/lvgl/src/misc/lv_style.c:214

0x400e0d49: get_prop_core at C:\Users\Utilisateur\esp\esp-idf\lv_port_esp32_9\build/…/components/lvgl/src/core/lv_obj_style.c:587

0x400e0dac: lv_obj_get_style_prop at C:\Users\Utilisateur\esp\esp-idf\lv_port_esp32_9\build/…/components/lvgl/src/core/lv_obj_style.c:220

0x400de437: lv_obj_get_style_border_width at C:\Users\Utilisateur\esp\esp-idf\lv_port_esp32_9\build/…/components/lvgl/src/core/lv_obj_style_gen.h:298
(inlined by) lv_obj_get_content_coords at C:\Users\Utilisateur\esp\esp-idf\lv_port_esp32_9\build/…/components/lvgl/src/core/lv_obj_pos.c:573

0x400fb929: lv_label_refr_text at C:\Users\Utilisateur\esp\esp-idf\lv_port_esp32_9\build/…/components/lvgl/src/widgets/lv_label.c:891

0x400fc42e: lv_label_event at C:\Users\Utilisateur\esp\esp-idf\lv_port_esp32_9\build/…/components/lvgl/src/widgets/lv_label.c:758

0x40117bb9: lv_obj_event_base at C:\Users\Utilisateur\esp\esp-idf\lv_port_esp32_9\build/…/components/lvgl/src/core/lv_event.c:96

0x400da9a3: event_send_core at C:\Users\Utilisateur\esp\esp-idf\lv_port_esp32_9\build/…/components/lvgl/src/core/lv_event.c:414

0x400daa52: lv_event_send at C:\Users\Utilisateur\esp\esp-idf\lv_port_esp32_9\build/…/components/lvgl/src/core/lv_event.c:73

0x400e103d: lv_obj_refresh_style at C:\Users\Utilisateur\esp\esp-idf\lv_port_esp32_9\build/…/components/lvgl/src/core/lv_obj_style.c:182

0x400e115d: lv_obj_add_style at C:\Users\Utilisateur\esp\esp-idf\lv_port_esp32_9\build/…/components/lvgl/src/core/lv_obj_style.c:103

0x400d82ae: infos_create at C:\Users\Utilisateur\esp\esp-idf\lv_port_esp32_9\build/…/components/lv_examples/lv_examples/src/lv_confortum/lv_confortum.c:370

0x400d979b: main_page at C:\Users\Utilisateur\esp\esp-idf\lv_port_esp32_9\build/…/components/lv_examples/lv_examples/src/lv_confortum/lv_confortum.c:222

0x400d987b: lv_confortum at C:\Users\Utilisateur\esp\esp-idf\lv_port_esp32_9\build/…/components/lv_examples/lv_examples/src/lv_confortum/lv_confortum.c:192

0x400d6d37: create_demo_application at C:\Users\Utilisateur\esp\esp-idf\lv_port_esp32_9\build/…/main/main.c:552

0x400d6df3: guiTask at C:\Users\Utilisateur\esp\esp-idf\lv_port_esp32_9\build/…/main/main.c:526 (discriminator 2)

0x4008afbd: vPortTaskWrapper at C:/Users/Utilisateur/esp/esp-idf/components/freertos/port/xtensa/port.c:168

ELF file SHA256: 6721320b3e46e617

Rebooting…