[Bug 201957] amdgpu: ring gfx timeout

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=201957

jmstylr at gmail.com changed:

           What    |Removed                     |Added
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                 CC|                            |jmstylr at gmail.com

--- Comment #17 from jmstylr at gmail.com ---
(In reply to shallowaloe from comment #16)
> Created attachment 285665 [details]
> 5 second video clip that triggers a crash
> 
> Hi,
> 
> I think I'm having the same problem as you guys.  I run a mythbackend where
> I record cable television and those recordings often crash my system when
> hardware decoding is enabled.  Usually it's just the screen that freezes and
> I can still ssh to it.  
> 
> Kernel 5.1.6 was an exception for me too, with that kernel I'm able to
> restart the display manager and recover without having to reboot.
> 
> Attached is a short video that crashes my system.  I can trigger the alert
> by running:
> 
> mpv --vo=vaapi out.ts
> 
> I'm wondering if it crashes your systems too and if it's related.


Just to add a data point, I tried running `mpv --vo=vaapi out.ts` against your
file, and while it crashed the application, it did not freeze the system. 

My hardware is a Ryzen 3700X with a Radeon RX 5700, running Ubuntu 19.10 with
default kernel (5.3.0-19-generic).

The command did result in the following lines in /var/log/syslog repeated every
5 seconds:

Nov 10 07:04:23 redacted kernel: [ 2266.802162] gmc_v10_0_process_interrupt:
23900 callbacks suppressed
Nov 10 07:04:23 redacted kernel: [ 2266.802166] amdgpu 0000:0b:00.0: [mmhub]
VMC page fault (src_id:0 ring:158 vmid:0 pasid:0)
Nov 10 07:04:23 redacted kernel: [ 2266.802170] amdgpu 0000:0b:00.0:   at page
0x0000000000000000 from 18
Nov 10 07:04:23 redacted kernel: [ 2266.802171] amdgpu 0000:0b:00.0:
VM_L2_PROTECTION_FAULT_STATUS:0x0000213D
Nov 10 07:04:23 redacted kernel: [ 2266.802176] amdgpu 0000:0b:00.0: [mmhub]
VMC page fault (src_id:0 ring:158 vmid:0 pasid:0)
Nov 10 07:04:23 redacted kernel: [ 2266.802178] amdgpu 0000:0b:00.0:   at page
0x0000000000000000 from 18
Nov 10 07:04:23 redacted kernel: [ 2266.802179] amdgpu 0000:0b:00.0:
VM_L2_PROTECTION_FAULT_STATUS:0x00000000
Nov 10 07:04:23 redacted kernel: [ 2266.802566] amdgpu 0000:0b:00.0: [mmhub]
VMC page fault (src_id:0 ring:158 vmid:0 pasid:0)
Nov 10 07:04:23 redacted kernel: [ 2266.802568] amdgpu 0000:0b:00.0:   at page
0x0000000000000000 from 18
Nov 10 07:04:23 redacted kernel: [ 2266.802569] amdgpu 0000:0b:00.0:
VM_L2_PROTECTION_FAULT_STATUS:0x0000213D
Nov 10 07:04:23 redacted kernel: [ 2266.802573] amdgpu 0000:0b:00.0: [mmhub]
VMC page fault (src_id:0 ring:158 vmid:0 pasid:0)
Nov 10 07:04:23 redacted kernel: [ 2266.802575] amdgpu 0000:0b:00.0:   at page
0x0000000000000000 from 18
Nov 10 07:04:23 redacted kernel: [ 2266.802576] amdgpu 0000:0b:00.0:
VM_L2_PROTECTION_FAULT_STATUS:0x00000000
Nov 10 07:04:23 redacted kernel: [ 2266.802984] amdgpu 0000:0b:00.0: [mmhub]
VMC page fault (src_id:0 ring:158 vmid:0 pasid:0)
Nov 10 07:04:23 redacted kernel: [ 2266.802985] amdgpu 0000:0b:00.0:   at page
0x0000000000000000 from 18
Nov 10 07:04:23 redacted kernel: [ 2266.802987] amdgpu 0000:0b:00.0:
VM_L2_PROTECTION_FAULT_STATUS:0x0000213D
Nov 10 07:04:23 redacted kernel: [ 2266.802993] amdgpu 0000:0b:00.0: [mmhub]
VMC page fault (src_id:0 ring:158 vmid:0 pasid:0)
Nov 10 07:04:23 redacted kernel: [ 2266.802994] amdgpu 0000:0b:00.0:   at page
0x0000000000000000 from 18
Nov 10 07:04:23 redacted kernel: [ 2266.802995] amdgpu 0000:0b:00.0:
VM_L2_PROTECTION_FAULT_STATUS:0x00000000
Nov 10 07:04:23 redacted kernel: [ 2266.803403] amdgpu 0000:0b:00.0: [mmhub]
VMC page fault (src_id:0 ring:158 vmid:0 pasid:0)
Nov 10 07:04:23 redacted kernel: [ 2266.803404] amdgpu 0000:0b:00.0:   at page
0x0000000000000000 from 18
Nov 10 07:04:23 redacted kernel: [ 2266.803406] amdgpu 0000:0b:00.0:
VM_L2_PROTECTION_FAULT_STATUS:0x0000213D
Nov 10 07:04:23 redacted kernel: [ 2266.803410] amdgpu 0000:0b:00.0: [mmhub]
VMC page fault (src_id:0 ring:158 vmid:0 pasid:0)
Nov 10 07:04:23 redacted kernel: [ 2266.803411] amdgpu 0000:0b:00.0:   at page
0x0000000000000000 from 18
Nov 10 07:04:23 redacted kernel: [ 2266.803412] amdgpu 0000:0b:00.0:
VM_L2_PROTECTION_FAULT_STATUS:0x00000000
Nov 10 07:04:23 redacted kernel: [ 2266.803822] amdgpu 0000:0b:00.0: [mmhub]
VMC page fault (src_id:0 ring:158 vmid:0 pasid:0)
Nov 10 07:04:23 redacted kernel: [ 2266.803824] amdgpu 0000:0b:00.0:   at page
0x0000000000000000 from 18
Nov 10 07:04:23 redacted kernel: [ 2266.803825] amdgpu 0000:0b:00.0:
VM_L2_PROTECTION_FAULT_STATUS:0x0000213D
Nov 10 07:04:23 redacted kernel: [ 2266.803831] amdgpu 0000:0b:00.0: [mmhub]
VMC page fault (src_id:0 ring:158 vmid:0 pasid:0)
Nov 10 07:04:23 redacted kernel: [ 2266.803833] amdgpu 0000:0b:00.0:   at page
0x0000000000000000 from 18
Nov 10 07:04:23 redacted kernel: [ 2266.803834] amdgpu 0000:0b:00.0:
VM_L2_PROTECTION_FAULT_STATUS:0x00000000

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