[Bug 93960] GPU HANG: ecode 7:0: stuck on render ring, gdm won't start X

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=93960

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

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

--- Comment #1 from yann <yann.argotti at intel.com> ---
Assigning to Mesa product.

>From this error dump, hung is happening in render ring batch with active head
at 0x0380c29c, with 0x78080003 (3DSTATE_VERTEX_BUFFERS) as IPEHR.

Batch extract (around 0x0380c29c):

0x0380c27c:      0x7b000005: 3DPRIMITIVE:
0x0380c280:      0x0000000f:    rect list sequential
0x0380c284:      0x000069d8:    vertex count
0x0380c288:      0x00001626:    start vertex
0x0380c28c:      0x00000001:    instance count
0x0380c290:      0x00000000:    start instance
0x0380c294:      0x00000000:    index bias
0x0380c298:      0x78080003: 3DSTATE_VERTEX_BUFFERS
0x0380c29c:      0x00004008:    buffer 0: sequential, pitch 8b
0x0380c2a0:      0x0385c000:    buffer address
0x0380c2a4:      0xffffffff:    max index
0x0380c2a8:      0x00000000:    mbz
0x0380c2ac:      0x7b000005: 3DPRIMITIVE:
0x0380c2b0:      0x0000000f:    rect list sequential
0x0380c2b4:      0x00000ef7:    vertex count
0x0380c2b8:      0x00000000:    start vertex
0x0380c2bc:      0x00000001:    instance count
0x0380c2c0:      0x00000000:    start instance
0x0380c2c4:      0x00000000:    index bias

Moreover interestingly we have an error also in the dump:
ERROR: 0x00000105
    TLB page fault error (GTT entry not valid)
    Invalid page directory entry error
    Cacheline containing a PD was marked as invalid

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