CORE DUMP - MODETH Lib

[Andrea Picillo]

Hi there!

I'm having some problems regarding some sporadic Core Dump Errors.

Traceback log is something like that:

Guru Meditation Error: Core  1 panic'ed (LoadProhibited). Exception was unhandled.
Core 1 register dump:
PC      : 0x40096ca3  PS      : 0x00060833  A0      : 0x80095afd  A1      : 0x3ffd1c00  
A2      : 0x3ffd1e68  A3      : 0x00060823  A4      : 0x3ffd1e4c  A5      : 0x00000001  
A6      : 0x000000fe  A7      : 0x3fbc2fec  A8      : 0x00000000  A9      : 0x3ffd1e68  
A10     : 0x3ffd1e68  A11     : 0x0000abab  A12     : 0x3ffd1e4c  A13     : 0x00000001  
A14     : 0x000000fe  A15     : 0x00000000  SAR     : 0x0000001e  EXCCAUSE: 0x0000001c  
EXCVADDR: 0x00000004  LBEG    : 0x400929b0  LEND    : 0x400929de  LCOUNT  : 0x00000000  

Backtrace gives to me the following result:

uxListRemove
/home/peter/docs/pycom-esp-idf/components/freertos/list.c:218
xTaskRemoveFromEventList
/home/peter/docs/pycom-esp-idf/components/freertos/tasks.c:3092
xQueueGenericSend
/home/peter/docs/pycom-esp-idf/components/freertos/queue.c:767
sys_sem_signal
/home/peter/docs/pycom-esp-idf/components/lwip/port/esp32/freertos/sys_arch.c:133
sys_arch_unprotect
/home/peter/docs/pycom-esp-idf/components/lwip/port/esp32/freertos/sys_arch.c:483
do_memp_malloc_pool
/home/peter/docs/pycom-esp-idf/components/lwip/lwip/src/core/memp.c:346
memp_malloc
/home/peter/docs/pycom-esp-idf/components/lwip/lwip/src/core/memp.c:398
tcpip_inpkt
/home/peter/docs/pycom-esp-idf/components/lwip/lwip/src/api/tcpip.c:207
tcpip_input
/home/peter/docs/pycom-esp-idf/components/lwip/lwip/src/api/tcpip.c:248
ethernetif_input
/home/peter/docs/pycom-esp-idf/components/lwip/port/esp32/netif/ethernetif.c:224
tcpip_adapter_eth_input
/home/peter/docs/pycom-esp-idf/components/tcpip_adapter/tcpip_adapter_lwip.c:1096
process_rx
/media/Project/esp32/mods/modeth.c:249

Please could you help me in finding out some causes about that?
I would appreciate that.
Thank you very much.

Greetings,
Andrea

[Andrea Picillo]

I also noticed that somethings different happens into TCP packets:

As you can see I received plenty good packets without any errors.
Suddenly I start receiving some "TCP Retransmission" or "DUP ACK".
The situation doesn't change in time when that happens. I mean that these "abnormal" packets will be received forever.

It seems that the at final stage it brings to the stuck of the Pycom Module and the Core Dump or WDT time out.