[Bug 107152] GPU fault detected: 146 / VM_CONTEXT1_PROTECTION_FAULT / ring gfx timeout

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107152

--- Comment #8 from Andrey Grodzovsky <andrey.grodzovsky at amd.com> ---
dwanger, i think you already have all the trace tools installed from previous
debug sessions so this should be quick for you - 

Update to latest kernel from
https://cgit.freedesktop.org/~agd5f/linux/log/?h=amd-staging-drm-next

Load the system and before starting reproduce run the following trace command -

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"


after VM_FAULT happened extract the log from /sys/kernel/debug/tracing

also run 
sudo umr -O verbose -R gfx[.]
sudo umr -O halt_waves -wa

Now let's say this your log crash 

Jul 07 01:08:20 ryzen kernel: amdgpu 0000:0a:00.0:  
VM_CONTEXT1_PROTECTION_FAULT_ADDR   0x00100190
Jul 07 01:08:20 ryzen kernel: amdgpu 0000:0a:00.0:  
VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x0E04400C
Jul 07 01:08:20 ryzen kernel: amdgpu 0000:0a:00.0: VM fault (0x0c, vmid 7,
pasid 32768) at page 1048976, read from 'TC1' (0x54433100) (68)

Do

umr -O verbose -vm 7 at 100190000 1 

where 7 is vmid value and 100190000 is VM_CONTEXT1_PROTECTION_FAULT_ADDR value
with extra '000' to get from  virtual page number to actual virtual address
(left shift 4096b).

I can look at the log then and also run it by our MESA/LLVM experts to try and
figure out what's going on.

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