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

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

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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@lists.freedesktop.org
          Reporter: jarmo.tiitto@gmail.com
        QA Contact: dri-devel@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@60.0hz,
1680x1050@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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[Bug 91527] 7870 radeon crashes after kernel msg drm:radeon_mn_invalidate_range_start

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

Michel Dänzer <michel@daenzer.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|Drivers/Gallium/radeonsi    |DRM/Radeon
            Version|git                         |unspecified
            Product|Mesa                        |DRI
         QA Contact|dri-devel@lists.freedesktop |
                   |.org                        |

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

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

--- Comment #1 from Alex Deucher <alexdeucher@gmail.com> ---
Please attach your xorg log and dmesg output.

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

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

--- Comment #2 from JATothrim <jarmo.tiitto@gmail.com> ---
Created attachment 117497
  --> https://bugs.freedesktop.org/attachment.cgi?id=117497&action=edit
dmesg log

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

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

--- Comment #3 from JATothrim <jarmo.tiitto@gmail.com> ---
Created attachment 117498
  --> https://bugs.freedesktop.org/attachment.cgi?id=117498&action=edit
Xorg.0.log

It was hard to catch the dmesg and Xorg log because soon as I close the Dolphin
emu the system hard freezes --> no data synced.
Note that after the kernel prints those last lines the the bug is just
triggered - after I close the Dolphin main window does the crash occurs.

If some one is interested I have kdump data of the system. Thanks to my kexec
dump kernel. :)

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

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

--- Comment #4 from JATothrim <jarmo.tiitto@gmail.com> ---
Created attachment 117555
  --> https://bugs.freedesktop.org/attachment.cgi?id=117555&action=edit
Maybe fix?

I searched Vanilla kernel git logs/patches and found this patch.
I hope it could fix the kernel crash on kernel 3.18.x series. I'm testing the
patch now.

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

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

--- Comment #5 from JATothrim <jarmo.tiitto@gmail.com> ---
I did more research and I was able to capture full kernel crash dump.

Debugging the crashdump I found that The kernel dies at kernel version v3.18.19
in src lines: drivers/gpu/drm/radeon/radeon_mn.c:75 or
drivers/gpu/drm/radeon/radeon_mn.c:76 on to NULL ptr dereference.
At both code lines the kernel tries to lock a mutex apparently. I don't know
exactly which one fails as I'm no expert debugging x86-64 assembly.

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

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

--- Comment #6 from Christian König <deathsimple@vodafone.de> ---
Well have you tested this with the current upstream kernel? E.g. 4.1 or a
recent rc of 4.2?

That's usually the first thing you should to to figure out if newer kernels are
already fixed.

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

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

JATothrim <jarmo.tiitto@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #7 from JATothrim <jarmo.tiitto@gmail.com> ---
(In reply to Christian König from comment #6)
> Well have you tested this with the current upstream kernel? E.g. 4.1 or a
> recent rc of 4.2?
> 
> That's usually the first thing you should to to figure out if newer kernels
> are already fixed.

Phew. I finally managed to compile/test newer kernel v4.2 and this bug is
fixed! :) Yay!
My tip for radeon 7870 owners: if your screen freezes and turns into a weird
rainbow mess try kernel v4.2.

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