[Bug 104192] [amdgpu][VEGA10] regular lockups with VM_L2_PROTECTION_FAULT_STATUS

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=104192

            Bug ID: 104192
           Summary: [amdgpu][VEGA10] regular lockups with
                    VM_L2_PROTECTION_FAULT_STATUS
           Product: DRI
           Version: DRI git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: tomenglund26 at gmail.com

i have been having somewhat unreproduceable lockups with my rx 56 vega all
going from 4.12 amd-staging up until 4.15-rc2 where its mainlined. but for some
reason i can reproduce it now with simply just open pavucontrol, and weirdly
enough only that.

i can properly play games, dirt rally, cs:go, run benchmarks or just leave the
computer on for days. but as fast as i open pavucontrol it lockups and this
happends in dmesg. and i dont seem to be all alone with it either, here is a
user with a rx 64 vega on archlinux having same issue/errors. 
https://bbs.archlinux.org/viewtopic.php?id=232519


amdgpu 0000:03:00.0: VM_L2_PROTECTION_FAULT_STATUS:0x00000000
amdgpu 0000:03:00.0:   at page 0x0000000000000000 from 27
amdgpu 0000:03:00.0: [gfxhub] VMC page fault (src_id:0 ring:171 vm_id:4
pas_id:0)

System info:
Radeon RX Vega (VEGA10 / DRM 3.23.0 / 4.15.0-rc2-mainline, LLVM 6.0.0)
Mesa 17.4.0-devel (git-4c7af87fb9)

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