[Bug 91583] GPU HANG: ecode 8:0:0x85dffffb, in kodi.bin ... stuck on render ring

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91583

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

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

--- Comment #1 from yann <yann.argotti at intel.com> ---
We seem to have neglected the bug a bit, apologies.

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 (please let me know if I am mistaken
with this GPU Hang).

Kernel: 4.1.4-1-ARCH
Platform: Braswell (pci id: 0x22b1)
Mesa: [Please confirm your mesa version]

>From this error dump, hung is happening in render ring batch with active head
at 0x03881b24, with 0x7a000004 (PIPE_CONTROL) as IPEHR.

We can also note:
ERROR: 0x00000001
    TLB page fault error (GTT entry not valid)
FAULT_TLB_DATA: 0x00000000 0x000013a4
    Address 0x00000000013a4000 PPGTT

and in FAULT_REG of render ring: Invalid PTE Fault

Batch extract (around 0x03881b24):

Bad length 7 in (null), expected 6-6
0x03881af0:      0x7b000005: 3DPRIMITIVE: fail sequential
0x03881af4:      0x00000006:    vertex count
0x03881af8:      0x00000004:    start vertex
0x03881afc:      0x00000000:    instance count
0x03881b00:      0x00000001:    start instance
0x03881b04:      0x00000000:    index bias
0x03881b08:      0x00000000: MI_NOOP
Bad count in PIPE_CONTROL
0x03881b0c:      0x7a000004: PIPE_CONTROL: no write, no depth stall, no RC
write flush, no inst flush
0x03881b10:      0x00101c11:    destination address
0x03881b14:      0x00000000:    immediate dword low
0x03881b18:      0x00000000:    immediate dword high
0x03881b24:      0x78230000: 3D UNKNOWN: 3d_965 opcode = 0x7823
0x03881b28:      0x00007880: MI_NOOP
0x03881b2c:      0x78210000: 3D UNKNOWN: 3d_965 opcode = 0x7821
0x03881b30:      0x00007840: MI_NOOP

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