[Bug 92958] GPU HANG: ecode 8:0:0x86dffffd, in X [16418], reason: Ring hung, action: reset

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=92958

yann <yann.argotti at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|DRM/Intel                   |Drivers/DRI/i915
         QA Contact|intel-gfx-bugs at lists.freede |
                   |sktop.org                   |
            Version|XOrg git                    |unspecified
            Product|DRI                         |Mesa

--- Comment #10 from yann <yann.argotti at intel.com> ---
There were improvements pushed in kernel and Mesa that will benefit to your
system, so please re-test with latest kernel & Mesa to see if this issue is
still occurring.

In parallel, assigning to Mesa product.

Kernel: 4.3.0-gentoo001
Platform: Broadwell-U (pci id: 0x1616)
Mesa: [Please confirm your mesa version]

>From this error dump, hung is happening in render ring batch with active head
at 0x00fd2488, with 0x79000002 (3DSTATE_DRAWING_RECTANGLE) as IPEHR.

Batch extract (around 0x00fd2488):

0x00fd2454:      0x78080003: 3DSTATE_VERTEX_BUFFERS
0x00fd2458:      0x0800400c:    buffer 1: sequential, pitch 12b
0x00fd245c:      0x02a7d000:    buffer address
0x00fd2460:      0x00000000:    max index
0x00fd2464:      0xffffffff:    mbz
Bad length 7 in (null), expected 6-6
0x00fd2468:      0x7b000005: 3DPRIMITIVE: fail sequential
0x00fd246c:      0x00000000:    vertex count
0x00fd2470:      0x00000003:    start vertex
0x00fd2474:      0x000000fe:    instance count
0x00fd2478:      0x00000001:    start instance
0x00fd247c:      0x00000000:    index bias
0x00fd2480:      0x00000000: MI_NOOP
0x00fd2484:      0x79000002: 3DSTATE_DRAWING_RECTANGLE
0x00fd2488:      0x00000000:    top left: 0,0
0x00fd248c:      0x00570068:    bottom right: 104,87
0x00fd2490:      0x00000000:    origin: 0,0
0x00fd2494:      0x782f0000: 3DSTATE_SAMPLER_STATE_POINTERS_PS
0x00fd2498:      0x000018c0:    dword 1

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