Hello,

 

I have been trying to debug an issue in our app where the entire system
hangs with the following error from the kernel: "kernel:watchdog: BUG: soft
lockup - CPU#0 stuck for 22s! [kworker/0:2:594]". This happens consistently
on every run. I was able to strip down all of the relevant code into a
simple standalone app that only uses 4 pthreads, 3 EVL events, and 3 EVL
mutexes if you would like to be able to re-create the issue (I have attached
the test file). Is there anything fundamentally flawed in this logic (the
same logic worked fine previously with STL condition variables and STL
mutexes)? It appears that there becomes some kind of deadlock in the kernel
due to an EVL event and/or EVL mutex. Let me know if there is any more
information that I can provide you to help clear up the scenario. I have
spent multiple weeks tracking this issue with no luck so far.

 

Thanks,

 

Russell