[Bug 94021] Skylake GPU hang ecode 9:0:0x86dffffd

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94021

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Assignee|intel-gfx-bugs at lists.freede |idr at freedesktop.org
                   |sktop.org                   |
          Component|DRM/Intel                   |Drivers/DRI/i915
            Product|DRI                         |Mesa
            Version|unspecified                 |11.0
         QA Contact|intel-gfx-bugs at lists.freede |
                   |sktop.org                   |

--- Comment #6 from yann <yann.argotti at intel.com> ---
There were workarounds on SKL pushed in kernel (more recent than yours
4.4.0-8.g9f68b90-default), so please re-test with latest kernel to see if it
has some benefits on that work.

In parallel, assigning to Mesa product.

>From this error dump, hung is happening in render ring batch with active head
at 0xf031f498, with 0x79000002 (3DSTATE_DRAWING_RECTANGLE) as IPEHR.

Batch extract (around 0xf031f498):

0xf031f474:      0x784e0002: 3D UNKNOWN: 3d_965 opcode = 0x784e
0xf031f478:      0x00000000: MI_NOOP
0xf031f47c:      0x00000000: MI_NOOP
0xf031f480:      0x00000000: MI_NOOP
0xf031f484:      0x78140000: 3D UNKNOWN: 3d_965 opcode = 0x7814
0xf031f488:      0x80000044: UNKNOWN
0xf031f48c:      0x780f0000: 3DSTATE_SCISSOR_POINTERS
0xf031f490:      0x00007c80:    scissor rect offset
0xf031f494:      0x79000002: 3DSTATE_DRAWING_RECTANGLE
0xf031f498:      0x00000000:    top left: 0,0
0xf031f49c:      0x00000000:    bottom right: 0,0
0xf031f4a0:      0x00000000:    origin: 0,0
0xf031f4a4:      0x784b0000: 3D UNKNOWN: 3d_965 opcode = 0x784b
0xf031f4a8:      0x00000005: MI_NOOP
0xf031f4ac:      0x784a0000: 3D UNKNOWN: 3d_965 opcode = 0x784a
0xf031f4b0:      0x0000c001: MI_NOOP
0xf031f4b4:      0x78490001: 3D UNKNOWN: 3d_965 opcode = 0x7849

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