[Bug 81027] [All]igt/gem_ctx_exec/reset-pin-leak fails and cause "WARNING: CPU: 2 PID: 4442 at drivers/gpu/drm/i915/i915_gem.c:4068 i915_gem_object_pin+0x9d/0x660 [i915]()"

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=81027

--- Comment #1 from Guo Jinxian <jinxianx.guo at intel.com> ---
The failure still able to reproduce on latest
-nightly(72faa6a63351879b381bd9e4013f38bc94f11999) on BYT

root at x-bytm02:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# ./gem_caching
--run-subtest read-writes
IGT-Version: 1.8-g107151c (x86_64) (Linux:
3.17.0-rc4_drm-intel-nightly_72faa6_20140911+ x86_64)
checking partial writes after partial reads
Test assertion failure function intel_batchbuffer_flush_on_ring, file
intel_batchbuffer.c:180:
Failed assertion: (drm_intel_gem_bo_context_exec(batch->bo, ctx, used, ring))
== 0
Last errno: 22, Invalid argument
Subtest read-writes: FAIL (0.248s)
root at x-bytm02:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# dmesg -r|egrep
"<[1-4]>"|grep drm
<4>[  435.635723] WARNING: CPU: 0 PID: 4368 at
drivers/gpu/drm/i915/i915_gem.c:3503 i915_gem_object_pin+0x3d4/0x65d [i915]()
<4>[  435.635726] Modules linked in: dm_mod snd_hda_codec_hdmi iTCO_wdt
iTCO_vendor_support snd_hda_codec_conexant snd_hda_codec_generic pcspkr
snd_hda_intel snd_hda_controller i2c_i801 snd_hda_codec snd_hwdep r8169 snd_pcm
lpc_ich mfd_core snd_timer snd soundcore iosf_mbi battery wmi ac acpi_cpufreq
uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev
i915 button video drm_kms_helper drm cfbfillrect cfbimgblt cfbcopyarea
<4>[  435.635765] CPU: 0 PID: 4368 Comm: gem_caching Not tainted
3.17.0-rc4_drm-intel-nightly_72faa6_20140911+ #2340
<4>[  435.636000]  [<ffffffffa001063c>] ? drm_ioctl+0x279/0x3bc [drm]

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