I am using the Dragon board 410c with Linaro release 19.01.
Unfortunately i cannot provide a specific scenario of how to reproduce the phenomenon
because it happens only once in several hours and i am currently not really sure what’s causing the problem.
I can tell that i am utilizing the WiFi chip and switching between AP and device modes
The bottom line is that once it occur i have to make a cold reset (make a complete removal of power).
According to ‘syslog’ it is very hard to distinguish the module which actually causes the kernel to be freeze (l’Caught , dumped core as pid 11628.’).
However it can be seen that there are issues that relates to memory allocation (most of them refers to wcn36xx).
For example: trying to free nonexistent vm area (‘Trying to vfree() nonexistent vm area (ffff000013273000)’), trying to allocate contiguous memory space (‘cma: cma_alloc: alloc failed’, wcn36xx: ERROR Failed to allocate BD mempool, wcn36xx: ERROR Failed to alloc DXE mempool: -12)
eventually SEGV signal is caught and we are freezing.
The SEGV signal may be generated as a result of illegal address access operation.
Can some explain why how can i upload a txt file (i.e. syslog) only images?
It looks like there is no option for that.