[Bug 101261] New: Radeon - Kernel warning when driver is unbound to secondary GPU

[Bug 101261] New: Radeon - Kernel warning when driver is unbound to secondary GPU

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=101261

            Bug ID: 101261
           Summary: Radeon - Kernel warning when driver is unbound to
                    secondary GPU
           Product: Drivers
           Version: 2.5
    Kernel Version: 4.0.7
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri@kernel-bugs.osdl.org
          Reporter: bellamy.beau@gmail.com
        Regression: No

Created attachment 182281
  --> https://bugzilla.kernel.org/attachment.cgi?id=182281&action=edit
dmesg output

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[Bug 101261] Radeon - Kernel warning when driver is unbound to secondary GPU

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=101261

--- Comment #1 from Beau V.C. Bellamy <bellamy.beau@gmail.com> ---
Created attachment 182291
  --> https://bugzilla.kernel.org/attachment.cgi?id=182291&action=edit
Script to unbind and start VM

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[Bug 101261] Radeon - Kernel warning when driver is unbound to secondary GPU

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=101261

--- Comment #2 from Beau V.C. Bellamy <bellamy.beau@gmail.com> ---
When unbinding the radeon driver from a second GPU in order to bind to the
vfio-pci driver (so it can be used on a virtual machine), the linux kernel will
display several warnings.  It looks like some resources may be double-freed. 
The GPU will otherwise work flawlessly in the VM with full acceleration on the
stock AMD windows drivers.

This actually shows up on all kernels that I've tried: 4.1.0, 3.19, 3.18, etc.

I'm not sure it's related, but the first GPU when running X on the host will
have some difficulties getting OpenGL working (I have a routine that involves a
dance with glxgears and firefox) and will work for some time and then take the
entire system down hard.  If I avoid anything OpenGL/DRM, the system will run
indefinitely.

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[Bug 101261] Radeon - Kernel warning when driver is unbound from secondary GPU

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=101261

Beau V.C. Bellamy <bellamy.beau@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Radeon - Kernel warning     |Radeon - Kernel warning
                   |when driver is unbound to   |when driver is unbound from
                   |secondary GPU               |secondary GPU

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