[Bug 98705] GPU fault with DRI3 on

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=98705

            Bug ID: 98705
           Summary: GPU fault with DRI3 on
           Product: DRI
           Version: unspecified
          Hardware: Other
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: 375gnu at gmail.com

Created attachment 127949
  --> https://bugs.freedesktop.org/attachment.cgi?id=127949&action=edit
Kernel log

When playing Portal2 or L4D2 with DRI3 on, after some quite short time game
locks and kernel log has the following messages.

0000:01:00.0: GPU fault detected: 147 0x00060802
0000:01:00.0:   VM_CONTEXT1_PROTECTION_FAULT_ADDR   0x00000000
0000:01:00.0:   VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x06008002
0000:01:00.0: VM fault (0x02, vmid 3) at page 0, read from '' (0x00000000) (8)

My hardware is HD7750, Linux is 4.9.0-rc4, rc1 was also affected. Mesa version
is 13.1-dev, 13.0 and 13.0-rc2 were affected as well.

I have the same issue with radeon kernel driver as well (Linux 4.6-4.9, Mesa
12.0 - 13.1 dev), but in this case kernel log is clear. So, possibly, this
issue is in Mesa code, or in code ported from radeon.ko. With DRI2 I don't have
this issue in any case.

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