Unhandled level 2 translation fault (11) at 0x000000b8, esr 0x92000046, rpi3 (aarch64)

[Bas van Tiel]

> I defined STACKSIZE to the kernel's SIGSTKSZ (16384) and it seems to run
> fine, though I'll leave it longer/overnight (on a Juno board). With the
> 4K signal stack it was crashing shortly after start.

I tried the STACKSIZE of 16384 for both the RPI3 and the PINEA64 board
and still see the same behaviour of crashing. Sometimes the process
is also blocked for a long time before it crashes.

Setting the interval to 200 usec [5 Khz] will help to crash it faster.

To further isolate the issue I will create a kernel module (based on a
hrtimer) that will sent a periodic signal to the registered process
and execute the same sighandler logic to check if the problem is still
there.

regards
Bas