Jakub Ladman

Hi I can't understand what it means here above. Why someone copied a bug report manual here? Anyway: After todays kernel update on my ubuntu 19.10 the libmodbus test crashes...

Oh, i have found it. The serial port involved disappeared from the system (the USB to serial dongle seems died overnight). So in my case, the bug is, that libmodbus...

[backtrace.log](https://github.com/psi-plus/main/files/1845616/backtrace.log)

How do i switch to debug mode?

[backtrace2.log](https://github.com/psi-plus/main/files/1845670/backtrace2.log)

Hi @BrunoLevy Thank you My module is now integrated and it definitely does something. Unfortunately it somehow interferes with uart, but no pins nor address bits are shared. I'm guessing...

Hi @BrunoLevy Actually it is not overlapping ```` iceprog femtosoc.bin init.. cdone: high reset.. cdone: low flash ID: 0xEF 0x40 0x18 0x00 file size: 104090 erase 64kB sector at 0x000000.....

Even with the clock speed decreased down to 12MHz (with PLL disabled), the uart transmission is damaged.

That one problem with uart now seems to be fixed, the common IO data bus was compromised.

Hello @stephane , I don't know what additional information can I give to you, unfortunately. Maybe the condition (ctx->s != -1) is not already met, because the context is freed...