[Bug 88916] New: [IVB bisected]igt/gem_evict_alignment/minor-hang time out and cause abnormal output in dmesg.

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=88916

            Bug ID: 88916
           Summary: [IVB bisected]igt/gem_evict_alignment/minor-hang time
                    out and cause abnormal output in dmesg.
           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 113041
  --> https://bugs.freedesktop.org/attachment.cgi?id=113041&action=edit
dmesg for case igt/gem_evict_alignment/minor-hang

==System Environment==
--------------------------
Regression: yes
Non-working platforms:  IVB

==kernel==
--------------------------
drm-intel-nightly/8b4216f91c7bf8d3459cadf9480116220bd6545e(2015-02-02)


==Bug detailed description==
-----------------------------
igt/gem_evict_alignment/minor-hang spend more than 10 minute to run. And there
is abnormal output in dmesg.

  dmesg -r|egrep "<[1-4]>"|grep drm
<4>[    2.331349] WARNING: CPU: 0 PID: 1040 at
drivers/gpu/drm/i915/i915_gem.c:4525 i915_gem_free_object+0x131/0x26b [i915]()
<4>[    2.331352] Modules linked in: i915 button video drm_kms_helper drm
cfbfillrect cfbimgblt cfbcopyarea
<4>[    2.331353] CPU: 0 PID: 1040 Comm: kworker/u8:6 Not tainted 3.19.0-rc6_dr
-intel-nightly_8b4216_20150202+ #126
<4>[    2.331446]  [<ffffffffa00181a1>] ?
drm_mode_set_config_internal+0xa1/0xd2 [drm]
<4>[    2.331448]  [<ffffffffa0065282>] ? restore_fbdev_mode+0xa8/0xc3
[drm_kms_helper]
<4>[    2.331450]  [<ffffffffa006659f>] ?
drm_fb_helper_restore_fbdev_mode_unlocked+0x1f/0x56 [drm_kms_helper]
<4>[    2.331452]  [<ffffffffa0066604>] ? drm_fb_helper_set_par+0x2e/0x33
[drm_kms_helper]
<4>[    2.331501]  [<ffffffffa006685b>] ?
drm_fb_helper_initial_config+0x252/0x2ef [drm_kms_helper]
<4>[   89.643322] WARNING: CPU: 1 PID: 1039 at
drivers/gpu/drm/i915/i915_irq.c:2615 i915_handle_error+0x58/0x5bd [i915]()
<4>[   89.643414]  ipv6 snd_hda_codec_hdmi snd_hda_codec_realtek
snd_hda_codec_generic dm_mod pcspkr snd_hda_intel snd_hda_controller
snd_hda_codec snd_hwdep i2c_i801 snd_pcm lpc_ich snd_timer mfd_core snd
soundcore parport_pc parport battery wmi acpi_cpufreq i915 button video
drm_kms_helper drm cfbfillrect cfbimgblt cfbcopyarea
<4>[   89.643599] CPU: 1 PID: 1039 Comm: kworker/u8:5 Tainted: G        W     
3.19.0-rc6_drm-intel-nightly_8b4216_20150202+ #126

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

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