[Bug 81066] New: [r600g] Second Life causes GPU to lock up sometimes with DRI_PRIME

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=81066

          Priority: medium
            Bug ID: 81066
          Assignee: dri-devel at lists.freedesktop.org
           Summary: [r600g] Second Life causes GPU to lock up sometimes
                    with DRI_PRIME
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: shawn.starr at rogers.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: XOrg CVS
         Component: DRM/Radeon
           Product: DRI

Created attachment 102452
  --> https://bugs.freedesktop.org/attachment.cgi?id=102452&action=edit
Kernel stack dump

kernel: 3.16.0-0.rc4.git0.1.fc21.1.x86_64
mesa: 0.3.0-2.20140707.fc21.x86_64 (git master)
Xorg: 1.15.99.904-1.fc21.x86_64 (git master, no 904 build yet)

kernel command boot options:
BOOT_IMAGE=/vmlinuz-3.16.0-0.rc4.git0.1.fc21.1.x86_64
root=/dev/mapper/fedora_segfault-root ro vconsole.keymap=us rhgb slub_debug=-
cgroup_disable=memory console=tty0 console=ttyS0,115200n8 radeon.runpm=0
radeon.dpm=1 radeon.hard_reset=1 intel_iommu=on
vfio_iommu_type1.allow_unsafe_interrupts=1 LANG=en_CA.UTF-8

Kernel dump from lockup see attachment

1) I am trying to use the PCI hard_reset radeon.ko option
2) pciehp decides to yank the GPU driver while it's doing a PCI reset (!)
3) When the GPU is reset, it's in a non-finished startup state.

This all happened when I tried to play Second Life with the Radeon GPU as
offload renderer on the Intel GM45 GPU which is doing the display.

To run Second Life I'm using:

$ LIBGL_DRI3_DISABLE=1
$ xrandr --setprovideroffloadsink 0x55 0xa2
$DRI_PRIME=1 ./singularity >& /dev/null &

Here is the Xrandr providers list:

Providers: number : 3
Provider 0: id: 0xa2 cap: 0xb, Source Output, Sink Output, Sink Offload crtcs:
3 outputs: 4 associated providers: 2 name:Intel
Provider 1: id: 0x55 cap: 0xf, Source Output, Sink Output, Source Offload, Sink
Offload crtcs: 2 outputs: 4 associated providers: 2 name:radeon
Provider 2: id: 0x55 cap: 0xf, Source Output, Sink Output, Source Offload, Sink
Offload crtcs: 2 outputs: 4 associated providers: 2 name:radeon

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