[Bug 97805] Occasional GPU Hang: ecode 9:0:0x84dffff8, kernel: 4.7.3,

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97805

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

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

--- Comment #2 from yann <yann.argotti at intel.com> ---
Artem, you have two different issues here. Regarding watermark (with the
backtrace from kernel log that you have pasted), I recommend to update your
kernel because there were recently some improvement done (see
https://cgit.freedesktop.org/drm-intel/log/drivers/gpu/drm/i915/intel_pm.c)

Regarding the second one, GPU Hang, assigning to Mesa product.

>From this error dump, hung is happening in render ring batch with active head
at 0xff02c63c, with 0x7b000005 (3DPRIMITIVE) as IPEHR.

Batch extract (around 0xff02c63c):

0xff02c614:      0x78090007: 3DSTATE_VERTEX_ELEMENTS
0xff02c618:      0x26000000:    buffer 4: valid, type 0x0000, src offset 0x0000
bytes
0xff02c61c:      0x22220000:    (0.0, 0.0, 0.0, 0.0), dst offset 0x00 bytes
0xff02c620:      0x26f60000:    buffer 4: valid, type 0x00f6, src offset 0x0000
bytes
0xff02c624:      0x11230000:    (X, Y, 0.0, 1.0), dst offset 0x00 bytes
0xff02c628:      0x26d80004:    buffer 4: valid, type 0x00d8, src offset 0x0004
bytes
0xff02c62c:      0x12230000:    (X, 0.0, 0.0, 1.0), dst offset 0x00 bytes
0xff02c630:      0x26850008:    buffer 4: valid, type 0x0085, src offset 0x0008
bytes
0xff02c634:      0x11230000:    (X, Y, 0.0, 1.0), dst offset 0x00 bytes
Bad length 7 in (null), expected 6-6
0xff02c638:      0x7b000005: 3DPRIMITIVE: fail sequential
0xff02c63c:      0x00000000:    vertex count
0xff02c640:      0x0000000f:    start vertex
0xff02c644:      0x00000262:    instance count
0xff02c648:      0x00000001:    start instance
0xff02c64c:      0x00000000:    index bias
0xff02c650:      0x00000000: MI_NOOP

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