[Bug 91569] New: [BDW-U] System crashing with gem_mmap_gtt over huge-bo-tiledx huge-bo-tiledy and huge-copy-xy

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91569

            Bug ID: 91569
           Summary: [BDW-U] System crashing with gem_mmap_gtt over
                    huge-bo-tiledx huge-bo-tiledy and huge-copy-xy
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: elio.martinez.monroy at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 117548
  --> https://bugs.freedesktop.org/attachment.cgi?id=117548&action=edit
tiledx_log

Test Environment:
````````````````````````````````````
Kernel 4.2from Christophe 4.2.0-rc4-drm-intel-testing-ww32+
Mesa: mesa-10.6.3 from http://cgit.freedesktop.org/mesa/mesa/
Xf86_video_intel: 2.99.917 from
http://cgit.freedesktop.org/xorg/driver/xf86-video-intel/
Libdrm: libdrm-2.4.62 from http://cgit.freedesktop.org/mesa/drm/
Cairo: 1.14.2 from http://cgit.freedesktop.org/cairo
libva: libva-1.6.0 from http://cgit.freedesktop.org/libva/
intel-driver: 1.6.0. from http://cgit.freedesktop.org/vaapi/intel-driver
xorg: 1.17.99 installed with script git_xorg.sh
Xserver: xorg-server-1.17.2 from http://cgit.freedesktop.org/xorg/xserver
Intel-gpu-tools: 1.11 from
http://cgit.freedesktop.org/xorg/app/intel-gpu-tools/

1. Launch igt with command (as root):
${IGT_DIRNAME}/scripts/run-tests.sh -t gem_mmap_gtt at huge-bo-tiledx or
gem_mmap_gtt at huge-bo-tiledy or gem_mmap_gtt at huge-copy-xy
2. The test start

Actual result:
---------------
2. The test crashes after about 4 seconds sending the following
message:gem_mmap_gtt: executing
[  214.755154] gem_mmap_gtt: starting subtest huge-bo-tiledY
[  214.839788] gem_mmap_gtt (3225): drop_caches: 3
[  218.192209] BUG: unable to handle kernel paging request at ffffc90003800000
[  218.192258] 

Expected result:
----------------
2. The test is successful (eventually set to fail/timeout)

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