[Bug 91447] New: [BSW] igt/kms_frontbuffer_tracking GPU HANG

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91447

            Bug ID: 91447
           Summary: [BSW] igt/kms_frontbuffer_tracking GPU HANG
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: critical
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: christophe.prigent at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 117334
  --> https://bugs.freedesktop.org/attachment.cgi?id=117334&action=edit
kern.log.tar.gz

Braswell-M
Hardware
Platform: Braswell M
CPU : Intel(R) CPU  @ 1.52 GHz (family: 6, model: 76 stepping: 3)
SoC : BSW C0 CRB : BRASWELL RVP Fab2
Mandatory Reworks : All Feature Reworks: F28, F32,F33 & F37
Optional reworks : O-01a Software
BIOS : BRAS.X64.B074.R00.1505311952 TXE FW : 2.0.0.2064
Ksc : 1.08
Linux distribution: Ubuntu 14.04 LTS 64 bits
Kernel 4.2-rc2 from git://anongit.freedesktop.org/drm-intel branch
drm-intel-nightly
Mesa: mesa-10.6.2 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: 8ad1e4077879a111f341dbfd2e0fee84efc9f57e from
http://cgit.freedesktop.org/xorg/app/intel-gpu-tools/

Steps:
------
1. Execute command:
cd <...>/intel-gpu-tools/scripts/
./run-tests.sh -r <path>/results  -x .*suspend.* -x
gem_userptr_blits at swapping.* -x gem_dummy_reloc_loop -x gem_concurrent_all.* -x
gem_evict_everything at swapping-hang -x gem_close_race -x gem_cpu_reloc -x
gem_ctx_thrash.* -x drv_hangman.* -x drv_missed_irq_hang -x kms_setmode.* -x
gem_fence_thrash at bo-write-verify-threaded-y -x gem_multi_bsd_sync_loop -x
gem_reloc_vs_gpu at forked-interruptible-faulting-reloc-thrashing -x
gem_seqno_wrap -x
gem_userptr_blits at forked-sync-swapping-multifd-mempressure-interruptible -x
kms_render at gpu-blit -x kms_cursor_crc at cursor-size-change -x
gem_render_linear_blits at swap-thrash -x gem_render_tiled_blits at swap-thrash -x
gem_evict_everything at mlocked-hang -x gem_userptr_blits at mlocked-normal-sync -x
gem_userptr_blits at mlocked-sync-interruptible -x
gem_userptr_blits at mlocked-unsync-normal -x
gem_userptr_blits at mlocked-unsync-interruptible -x gem_exec_big -x
gem_mmap_gtt at medium-copy -x gem_mmap_gtt at medium-copy-xy -x gem_pwrite at huge-gtt
-x gem_pwrite at big-cpu -x gem_pwrite at big-gtt -x gem_pwrite at huge-cpu
2. Wait a moment

Actual result:
--------------
2. A lot of tests are failing. Log shows a GPU hang and Failed to reset chip

Expected result:
----------------
2. No GPU hang

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