[Bug 105251] [Vega10] GPU lockup on boot: VMC page fault

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105251

--- Comment #24 from CheatCodesOfLife <mesa at suchmail.net> ---
(In reply to Andrey Grodzovsky from comment #23)
> (In reply to CheatCodesOfLife from comment #22)
> > You're welcome.
> > 
> > Not the exact same problem, no. I can get a hard-lock by trying to use
> > amdvlk to play rpcs3, but it doesn't produce the same error and it's not as
> > consistent (takes up to 15 minutes to crash)
> > 
> > Not sure if it's worth noting but I went back and tried every Cemu version
> > back to 1.5 and a lot of wine versions going back to 2.8. It happens every
> > time as soon as the game loads.
> 
> Let's try to get some debug info for the VMC page fault then -  
> 
> Clone and build our open source register analyzer from here -
> https://cgit.freedesktop.org/amd/umr/ 
> Install trace-cmd utility 
> Load driver with cmd line parameter amdgpu.vm_fault_stop=2 from grub
> P.S Best to use latest kernel from here -
> https://cgit.freedesktop.org/~agd5f/linux/log/?h=amd-staging-drm-next
> 
> After desktop is loaded type 
> 
> sudo trace-cmd start -e dma_fence -e gpu_scheduler -e amdgpu -v -e
> "amdgpu:amdgpu_mm_rreg" -e "amdgpu:amdgpu_mm_wreg" -e "amdgpu:amdgpu_iv"
> to enable kernel event tracing log
> 
> If possible to launch the game from shell then prepend the command with 
> GALLIUM_DDEBUG=always 
> to dump all the MESA commands into files in ~/ddebug_dumps/
> 
> 
> Start the game. When the problem happens do the following - 
> 
> as root 
> cd /sys/kernel/debug/tracing && cat trace > event_dump
> 
> as normal user or root
> sudo umr -lb > umr_dump
> sudo umr -O verbose,use_colour -R gfx[.] >> umr_dump
> sudo umr -O halt_waves,use_colour -wa >> umr_dump
> dmesg > dmesg_dump
> 
> Upload a tar/zip of all those files + all the files from ~/ddebug_dumps/

Thanks for the instructions. I think I've followed them correctly. I didn't
build the amd-drm-next kernel as it'll be an overnight job (slow internet
speeds) but I did add the grub parameters. I have attached the files.

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