[Bug 98703] [SKL] GPU HANG: ecode 9:0:0x84dffff8, in X [263], reason: Ring hung, action: reset

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=98703

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|DRM/Intel                   |Drivers/DRI/i965
         QA Contact|intel-gfx-bugs at lists.freede |intel-3d-bugs at lists.freedes
                   |sktop.org                   |ktop.org
           Assignee|intel-gfx-bugs at lists.freede |intel-3d-bugs at lists.freedes
                   |sktop.org                   |ktop.org
            Product|DRI                         |Mesa
            Version|XOrg git                    |unspecified
             Status|NEW                         |NEEDINFO

--- Comment #1 from yann <yann.argotti at intel.com> ---
There were workaround for SKL and 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: mark as REOPENED if you can reproduce and
RESOLVED/* if you cannot reproduce.

In parallel, assigning to Mesa product.

Kernel: 4.4.26-gentoo
Platform: Skylake (pci id: 0x1916)
Mesa: [Please confirm your mesa version]

>From this error dump, hung is happening in render ring batch with active head
at 0xfd021644, with 0x7b000005 (3DPRIMITIVE) as IPEHR.

Batch extract (around 0xfd021644):

0xfd021624:      0x78090005: 3DSTATE_VERTEX_ELEMENTS
0xfd021628:      0x02000000:    buffer 0: invalid, type 0x0000, src offset
0x0000 bytes
0xfd02162c:      0x22220000:    (0.0, 0.0, 0.0, 0.0), dst offset 0x00 bytes
0xfd021630:      0x02f60000:    buffer 0: invalid, type 0x00f6, src offset
0x0000 bytes
0xfd021634:      0x11230000:    (X, Y, 0.0, 1.0), dst offset 0x00 bytes
0xfd021638:      0x02f60004:    buffer 0: invalid, type 0x00f6, src offset
0x0004 bytes
0xfd02163c:      0x11230000:    (X, Y, 0.0, 1.0), dst offset 0x00 bytes
Bad length 7 in (null), expected 6-6
0xfd021640:      0x7b000005: 3DPRIMITIVE: fail sequential
0xfd021644:      0x00000000:    vertex count
0xfd021648:      0x00000003:    start vertex
0xfd02164c:      0x0000001a:    instance count
0xfd021650:      0x00000001:    start instance
0xfd021654:      0x00000000:    index bias
0xfd021658:      0x00000000: MI_NOOP
0xfd02165c:      0x784d0000: 3D UNKNOWN: 3d_965 opcode = 0x784d

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