esp32: gnrc_networking crashing

[haukepetersen]

Description

Currently, I am no able to get gnrc_networking working on an esp32. When I flash gnrc_networking on a esp32-wroom-32, the serial port is constantly disconnecting. This happens independent of the Wifi configuration.

/home/hauke/dev/riot/RIOT/dist/tools/pyterm/pyterm -p "/dev/ttyUSB0" -b "115200"  
Twisted not available, please install it if you want to use pyterm's JSON capabilities
2022-05-10 12:02:39,293 # Connect to serial port /dev/ttyUSB0
Welcome to pyterm!
Type '/exit' to exit.
2022-05-10 12:02:40,326 # Initializing. RAM available for dynamic allocation:
2022-05-10 12:02:40,326 # At 3FFAE6E0 len 00001920 (6 KiB): DRAM
2022-05-10 12:02:40,327 # At 3FFBC580 len 00023A80 (142 KiB): DRAM
2022-05-10 12:02:40,327 # At 3FFE0440 len 0001FBC0 (126 KiB): D/IRAM
2022-05-10 12:02:40,328 # At 40078000 len 00008000 (32 KiB): IRAM
2022-05-10 12:02:40,328 # At 4008E630 len 000119D0 (70 KiB): IRAM
2022-05-10 12:02:40,686 # 32 kHz XTAL not found, switching to internal 150 kHz oscillator
2022-05-10 12:02:40,737 # 
2022-05-10 12:02:42,492 # Serial port disconnected, waiting to get reconnected...
2022-05-10 12:02:43,493 # Serial port disconnected, waiting to get reconnected...
2022-05-10 12:02:44,495 # Serial port disconnected, waiting to get reconnected...
2022-05-10 12:02:45,496 # Serial port disconnected, waiting to get reconnected...
2022-05-10 12:02:46,497 # Serial port disconnected, waiting to get reconnected...
2022-05-10 12:02:47,498 # Serial port disconnected, waiting to get reconnected...
2022-05-10 12:02:48,499 # Serial port disconnected, waiting to get reconnected...
2022-05-10 12:02:49,501 # Serial port disconnected, waiting to get reconnected...
2022-05-10 12:02:50,502 # Serial port disconnected, waiting to get reconnected...
2022-05-10 12:02:51,503 # Try to reconnect to /dev/ttyUSB0 again...                       # <- here i pressed the reset button
2022-05-10 12:02:51,538 # Reconnected to serial port /dev/ttyUSB0
2022-05-10 12:02:52,527 # 32 kHz XTAL not found, switching to internal 150 kHz oscillator
2022-05-10 12:02:52,578 # 
2022-05-10 12:02:54,332 # Serial port disconnected, waiting to get reconnected...
2022-05-10 12:02:55,333 # Serial port disconnected, waiting to get reconnected...
2022-05-10 12:02:56,334 # Serial port disconnected, waiting to get reconnected...
2022-05-10 12:02:57,335 # Serial port disconnected, waiting to get reconnected...
2022-05-10 12:02:58,336 # Serial port disconnected, waiting to get reconnected...

Pyterm is constantly reconnecting to the serial port roughly once a second, looks a little bit like the esp32 is stuck in a reboot loop of some kind?! Could this be something watchdog related?

Flashing hello-world on the same board works just as expected:

2022-05-10 11:56:39,246 # 
2022-05-10 11:56:39,251 # rst:0x1 (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
2022-05-10 11:56:39,253 # configsip: 0, SPIWP:0xee
2022-05-10 11:56:39,260 # clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
2022-05-10 11:56:39,262 # mode:DOUT, clock div:2
2022-05-10 11:56:39,264 # load:0x3fff0030,len:1452
2022-05-10 11:56:39,266 # ho 0 tail 12 room 4
2022-05-10 11:56:39,268 # load:0x40078000,len:11460
2022-05-10 11:56:39,271 # load:0x40080400,len:2780
2022-05-10 11:56:39,272 # entry 0x400805ac
2022-05-10 11:56:40,595 # 32 kHz XTAL not found, switching to internal 150 kHz oscillator
2022-05-10 11:56:40,645 # 
2022-05-10 11:56:40,653 # main(): This is RIOT! (Version: 2022.04-devel-941-gcf568-HEAD)
2022-05-10 11:56:40,654 # Hello World!
2022-05-10 11:56:40,659 # You are running RIOT on a(n) esp32-wroom-32 board.
2022-05-10 11:56:40,662 # This board features a(n) esp32 MCU.

The behavior can be reproduced both on current master (59ec6f1) as well as with using #17601.

I am using the current toolchain setup as included in RIOT (xtensa-esp32-elf-gcc (crosstool-NG esp-2021r2-patch3) 8.4.0).

Steps to reproduce the issue

Flash vanilla gnrc_networking on esp32-wroom-32 board. You should see the serial disconnecting periodically roughly once a second.

Expected results

gnrc_networking should be stable :-)

Actual results

see above

Versions

see above

[haukepetersen]

Just gave this issue some more testing on my notebook (different host machine then the other two I tried before): with both using Docker and a native toolchain installed via the provided installation scripts (/dist/tools/esptools) everything is working just fine. I don't quite now what is going wrong on my other hosts, but it seems that this is somehow related to local misconfiguration. @miri64 was so nice to also confirm everything working as expected using the identical hardware board.

As this seems to a local problem on my side, I consider this issue solved.