[Bug 88482] New: [BSW]igt/gem_evict_everything/minor-hang not enough mem, dmesg warning

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=88482

            Bug ID: 88482
           Summary: [BSW]igt/gem_evict_everything/minor-hang not enough
                    mem, dmesg warning
           Product: DRI
           Version: DRI git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: hengx.ding at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 112328
  --> https://bugs.freedesktop.org/attachment.cgi?id=112328&action=edit
dmesg for this case

==System Environment==
--------------------------
Regression: No, this is a new case.

Non-working platforms: BSW
==kernel==
--------------------------
origin/drm-intel-nightly:95cce4b4c5f3ecaf9c1c01d42f670da2748fcffb(fails)

==Bug detailed description==
-----------------------------

dmesg -r | egrep "<[1-6]>" |grep drm                            
<6>[  160.817604] [drm] stuck on render ring
<6>[  160.847315] [drm] GPU HANG: ecode 8:0:0xe757fffe, reason: Ring hung,
action: reset
<6>[  160.847329] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
<6>[  160.847332] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
<6>[  160.847348] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
<6>[  160.847353] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
<6>[  160.847356] [drm] GPU crash dump saved to /sys/class/drm/card0/error
<5>[  160.849206] drm/i915: Resetting chip after gpu hang
<4>[  162.820074] WARNING: CPU: 0 PID: 891 at
drivers/gpu/drm/i915/intel_pm.c:3874 valleyview_set_rps+0x58/0x153 [i915]()
<4>[  162.820080] Modules linked in: ipv6 dm_mod snd_hda_codec_hdmi iTCO_wdt
iTCO_vendor_support pcspkr serio_raw snd_hda_codec_realtek
snd_hda_codec_generic i2c_i801 lpc_ich mfd_core snd_hda_intel
snd_hda_controller snd_hda_codec snd_hwdep snd_pcm snd_timer snd soundcore
battery ac acpi_cpufreq joydev i915 button video drm_kms_helper drm cfbfillrect
cfbimgblt cfbcopyarea
<4>[  162.820132] CPU: 0 PID: 891 Comm: kworker/0:1 Tainted: G        W     
3.19.0-rc4_drm-intel-nightly_95cce4_20150116+ #498

==Reproduce steps==
---------------------------- 
1. ./gem_evict_alignment --run-subtest minor-hang

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