[Bug 95312] 4.6-rc5: [drm] GPU HANG: ecode 6:-1:0x00000000, reason: Kicking stuck wait on render ring, action: continue

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=95312

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
      i915 features|GPU hang                    |power/Other

--- Comment #6 from yann <yann.argotti at intel.com> ---
Both gpu crash dumps are describing same issue.

>From error dump, there is no hung in render ring batch with active head
at 0x0006a028, with 0x01800100 (MI_WAIT_FOR_EVENT) as IPEHR (could it be issue
linked to dpms?)

Moreover we can note that we have ERROR: 0x00000012
    Context page GTT translation generated a fault (GTT entry not valid)
    TLB page VTD translation generated an error

for reference, batch extract (around 0x0006a028):

0x0006a018:      0x11000001: MI_LOAD_REGISTER_IMM
0x0006a01c:      0x00002050:    dword 1
0x0006a020:      0x00010001:    dword 2
0x0006a024:      0x01800100: MI_WAIT_FOR_EVENT, plane B scan line wait
0x0006a028:      0x11000001: MI_LOAD_REGISTER_IMM
0x0006a02c:      0x00002050:    dword 1
0x0006a030:      0x00010000:    dword 2
0x0006a034:      0x11000001: MI_LOAD_REGISTER_IMM

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