[Bug 107065] "BUG: unable to handle kernel paging request at 0000000000002000" in amdgpu_vm_cpu_set_ptes at amdgpu_vm.c:921

[bugzilla-daemon@freedesktop.org]

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https://bugs.freedesktop.org/show_bug.cgi?id=107065

--- Comment #16 from dwagner <jb5sgc1n.nya@20mm.eu> ---
(In reply to Andrey Grodzovsky from comment #15)
> We have only minor differences but I can't reproduce it. Maybe the resume
> failure is indeed due the eviction failure during suspend. Is S3 failure is
> happening only when you switch to CPU update mode ?

No, when I boot amd-staging-drm-next with amdgpu.vm_update_mode=0
and suspend to S3 then resuming does also crash, but with different
messages - _not_ with
 "BUG: unable to handle kernel paging request at 0000000000002000"
like in the vm_update_mode=3 case.

In the journal, I can see see after a vm_update_mode=0 S3 resume attempt: 

Jul 05 00:41:59 ryzen kernel: [TTM] Buffer eviction failed
Jul 05 00:41:59 ryzen kernel: ACPI: Preparing to enter system sleep state S3
...
Jul 05 00:42:00 ryzen kernel: [drm:gfx_v8_0_ring_test_ring [amdgpu]] *ERROR*
amdgpu: ring 0 test failed (scratch(0xC040)=0xC>
Jul 05 00:42:00 ryzen kernel: [drm:amdgpu_device_ip_resume_phase2 [amdgpu]]
*ERROR* resume of IP block <gfx_v8_0> failed -22
Jul 05 00:42:00 ryzen kernel: [drm:amdgpu_device_resume [amdgpu]] *ERROR*
amdgpu_device_ip_resume failed (-22).
Jul 05 00:42:00 ryzen kernel: dpm_run_callback(): pci_pm_resume+0x0/0xa0
returns -22
Jul 05 00:42:00 ryzen kernel: PM: Device 0000:0a:00.0 failed to resume async:
error -22
...
Jul 05 00:42:00 ryzen kernel: amdgpu 0000:0a:00.0: couldn't schedule ib on ring
<sdma0>
Jul 05 00:42:00 ryzen kernel: [drm:amdgpu_job_run [amdgpu]] *ERROR* Error
scheduling IBs (-22)
Jul 05 00:42:00 ryzen kernel: amdgpu 0000:0a:00.0: couldn't schedule ib on ring
<sdma0>
Jul 05 00:42:00 ryzen kernel: [drm:amdgpu_job_run [amdgpu]] *ERROR* Error
scheduling IBs (-22)
Jul 05 00:42:00 ryzen kernel: amdgpu 0000:0a:00.0: couldn't schedule ib on ring
<sdma0>
Jul 05 00:42:00 ryzen kernel: [drm:amdgpu_job_run [amdgpu]] *ERROR* Error
scheduling IBs (-22)
Jul 05 00:42:00 ryzen kernel: amdgpu 0000:0a:00.0: couldn't schedule ib on ring
<sdma0>
... many more of this... but no kernel BUG or Oops.

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