[Bug 99070] [SKL] GPU HANG: ecode 9:0:0x84dffff8, in Xorg [2482], reason: Hang on render ring, action: reset

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=99070

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |NEEDINFO
      i915 features|                            |GPU hang
            Summary|[drm] GPU HANG: ecode       |[SKL] GPU HANG: ecode
                   |9:0:0x84dffff8, in Xorg     |9:0:0x84dffff8, in Xorg
                   |[2482], reason: Hang on     |[2482], reason: Hang on
                   |render ring, action: reset  |render ring, action: reset
      i915 platform|                            |SKL

--- Comment #2 from yann <yann.argotti at intel.com> ---
n780 at tuta.io, consider to attach gpu error dump rather than putting it in
comment / description body.

There are constant improvements pushed in kernel and Mesa that will benefit to
your system, so please re-test with latest kernel & Mesa (12 or 13) and mark as
REOPENED if you can reproduce (and attach fresh gpu error dump & kernel log)
and RESOLVED/* if you cannot reproduce.

In parallel, assigning to Mesa product.

Kernel: 4.9.0-rc8+
Platform: SKL (pci id: 0x1916, pci revision: 0x07, pci subsystem: 1028:0704)
Mesa: [Please confirm your mesa version]

>From this error dump, hung is happening in render ring batch with active head
at 0xc21ac32c, with 0x7b000005 (3DPRIMITIVE) as IPEHR.

Batch extract (around 0xc21ac32c):

0xc21ac30c:      0x78090005: 3DSTATE_VERTEX_ELEMENTS
0xc21ac310:      0x02000000:    buffer 0: invalid, type 0x0000, src offset
0x0000 bytes
0xc21ac314:      0x22220000:    (0.0, 0.0, 0.0, 0.0), dst offset 0x00 bytes
0xc21ac318:      0x02f60000:    buffer 0: invalid, type 0x00f6, src offset
0x0000 bytes
0xc21ac31c:      0x11230000:    (X, Y, 0.0, 1.0), dst offset 0x00 bytes
0xc21ac320:      0x02f60004:    buffer 0: invalid, type 0x00f6, src offset
0x0004 bytes
0xc21ac324:      0x11230000:    (X, Y, 0.0, 1.0), dst offset 0x00 bytes
Bad length 7 in (null), expected 6-6
0xc21ac328:      0x7b000005: 3DPRIMITIVE: fail sequential
0xc21ac32c:      0x00000000:    vertex count
0xc21ac330:      0x00000003:    start vertex
0xc21ac334:      0x00000a34:    instance count
0xc21ac338:      0x00000001:    start instance
0xc21ac33c:      0x00000000:    index bias
0xc21ac340:      0x00000000: MI_NOOP
0xc21ac344:      0x784d0000: 3D UNKNOWN: 3d_965 opcode = 0x784d

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