[Bug 89859] [SNB/BSW]igt/gem_evict_everything/mlocked-hang causes oom killer

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=89859

--- Comment #3 from ye.tian <yex.tian at intel.com> ---
Test it on the latest nightly kernel on SNB, this case will timeout and
WARNING.

output:
-----------------
root at x-sgb3:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# time
./gem_evict_everything --run-subtest mlocked-hang
IGT-Version: 1.10-gbeddb3b (x86_64) (Linux:
4.0.0_drm-intel-nightly_b9fe35_20150421+ x86_64)
Subtest mlocked-hang: SUCCESS (723.107s)

real    12m7.982s
user    0m4.546s
sys     3m52.365s


dmesg info:
-----------------------

[  757.698571] ------------[ cut here ]------------
[  757.698602] WARNING: CPU: 0 PID: 4588 at
drivers/gpu/drm/i915/i915_gem_execbuffer.c:1256
i915_gem_ringbuffer_submission+0x2a9/0x86f [i915]()
[  757.698604] blitter ring didn't clear reload
[  757.698605] Modules linked in: ipv6 dm_mod snd_hda_codec_hdmi
snd_hda_codec_realtek snd_hda_codec_generic iTCO_wdt iTCO_vendor_support ppdev
pcspkr serio_raw i2c_i801 firewire_ohci firewire_core crc_itu_t snd_hda_intel
snd_hda_controller snd_hda_codec lpc_ich mfd_core snd_hda_core snd_hwdep
snd_pcm joydev snd_timer snd soundcore parport_pc parport tpm_tis tpm
acpi_cpufreq i915 button video drm_kms_helper drm
[  757.698624] CPU: 0 PID: 4588 Comm: gem_evict_every Tainted: G        W      
4.0.0_drm-intel-nightly_b9fe35_20150421+ #368
[  757.698626] Hardware name:                  /DQ67SW, BIOS
SWQ6710H.86A.0060.2011.1220.1805 12/20/2011
[  757.698627]  0000000000000000 0000000000000009 ffffffff81795847
ffff8802344ffbb8
[  757.698630]  ffffffff8103bd5a 0000000000000010 ffffffffa0096618
ffff880233fd9a40
[  757.698632]  ffff880002d94108 0000000000000000 ffff8802344ffe18
ffff880002d90000
[  757.698634] Call Trace:
[  757.698640]  [<ffffffff81795847>] ? dump_stack+0x40/0x50
[  757.698644]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
[  757.698654]  [<ffffffffa0096618>] ?
i915_gem_ringbuffer_submission+0x2a9/0x86f [i915]
[  757.698657]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
[  757.698667]  [<ffffffffa0096618>] ?
i915_gem_ringbuffer_submission+0x2a9/0x86f [i915]
[  757.698676]  [<ffffffffa0095ff0>] ?
i915_gem_do_execbuffer.isra.13+0xca6/0xd88 [i915]
[  757.698689]  [<ffffffffa00a138a>] ? i915_gem_pwrite_ioctl+0x75a/0x7e0 [i915]
[  757.698693]  [<ffffffff8110948a>] ? __kmalloc+0x65/0x13d
[  757.698703]  [<ffffffffa0097085>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
[  757.698709]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
[  757.698719]  [<ffffffffa0096f17>] ? i915_gem_execbuffer+0x339/0x339 [i915]
[  757.698723]  [<ffffffff8111daa6>] ? do_vfs_ioctl+0x360/0x424
[  757.698726]  [<ffffffff810f1870>] ? __mm_populate+0xf6/0x107
[  757.698728]  [<ffffffff8111dbb3>] ? SyS_ioctl+0x49/0x7a
[  757.698731]  [<ffffffff8179b0f2>] ? system_call_fastpath+0x12/0x17
[  757.698733] ---[ end trace a5c8f727317bda67 ]---

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