RockPro64 has bad Memory (Software sogfaults and kernel panics)

[richese]

I tried to run the memtester on my board with fresh image and sure enough there seem to be memory issues in the part of memory it tested.
Resuts: https://pastebin.pl/view/00e8b2d7

Hardware I am using:
Rockpro64 V2.1 2018-07-02, 4GB variant, date code 52 19
running of SD card, tall heatsink installed, powered by Pine 5A power supply

For OS image I used ayufan's buster-minimal-rockpro64-0.10.12-1184-arm64 image.
I believe this one uses recent enough u-boot that does not use the binary blob in RAM.

Command used:

Code:

sudo memtester 3G 1

I tried the same on other SBC's I have with no errors so there is definitely something going on with this RockPRO board.