Ooops, I accidentally overwrote the log from linux-amd-wip-git with a later failed test with 4.20.0-rc7-mainline, so the bad log I attached is for 4.20.0-rc7-mainline. However as I said before it's been the same error all along for all kernels from 4.19.x on. I'll recompile linux-amd-wip-git and get log from their if anyone needs it though.