[Bug 91527] 7870 radeon crashes after kernel msg drm:radeon_mn_invalidate_range_start

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91527

            Bug ID: 91527
           Summary: 7870 radeon crashes after kernel msg
                    drm:radeon_mn_invalidate_range_start
           Product: Mesa
           Version: git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: Drivers/Gallium/radeonsi
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: jarmo.tiitto at gmail.com
        QA Contact: dri-devel at lists.freedesktop.org

On my case is is a severe bug preventing me from playing games on dolphin.

System: Linux Mint 17.3 using kernel 3.18.19 and oibaf graphics drivers ppa
100% reproducible in my system, happens always:
-Start dolphin 4.+ GCN emulator and play a minute e.g. Super Mario Sunshine.
-Close emulator window: kernel crashes soon after outputting 1-5 lines of:
Jul 31 22:43:47   kernel: [ 6008.091188] [drm:radeon_mn_invalidate_range_start]
*ERROR* (-1) failed to wait for user bo
Jul 31 22:43:47   kernel: [ 6008.092895] [drm:radeon_mn_invalidate_range_start]
*ERROR* (-1) failed to wait for user bo

inxi -Gxx output:
Graphics:  Card: Advanced Micro Devices [AMD/ATI] Pitcairn XT [Radeon HD 7870
GHz Edition] bus-ID: 01:00.0 chip-ID: 1002:6818 
           X.Org: 1.15.1 driver: radeon Resolution: 1920x1080 at 60.0hz,
1680x1050 at 60.0hz 
           GLX Renderer: Gallium 0.4 on AMD PITCAIRN GLX Version: 3.0 Mesa
11.0.0-devel (git-4d7e0fa 2015-08-01 trusty-oibaf-ppa) Direct Rendering: Yes

PS: plz. be nice - this is my first bug report on here.

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