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    <head>
      <base href="https://bugs.freedesktop.org/" />
    </head>
    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [SNB]igt/gem_evict_everything/swapping-hang sporadically causes system hang"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=88821">88821</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[SNB]igt/gem_evict_everything/swapping-hang sporadically causes system hang
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>DRI
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>unspecified
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Linux (All)
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>DRM/Intel
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>intel-gfx-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>huax.lu@intel.com
          </td>
        </tr>

        <tr>
          <th>QA Contact</th>
          <td>intel-gfx-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>intel-gfx-bugs@lists.freedesktop.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=112874" name="attach_112874" title="dmesg">attachment 112874</a> <a href="attachment.cgi?id=112874&action=edit" title="dmesg">[details]</a></span>
dmesg

==System Environment==
--------------------------
Regression:  not sure, fail rate: 1/5

no-working platforms: SNB(HNR)

==kernel==
--------------------------
drm-intel-nightly/2c2cd37eb3b97bb8846ac3bf75dcb8b4948922d0
commit 2c2cd37eb3b97bb8846ac3bf75dcb8b4948922d0
Author: Jani Nikula <<a href="mailto:jani.nikula@intel.com">jani.nikula@intel.com</a>>
Date:   Mon Jan 26 11:39:01 2015 +0200

    drm-intel-nightly: 2015y-01m-26d-09h-38m-30s UTC integration manifest

==Bug detailed description==
-----------------------------
It sporadically causes system hang, fail rate:1/5

output:
IGT-Version: 1.9-gfa94e01 (x86_64) (Linux:
3.19.0-rc6_drm-intel-nightly_2c2cd3_20150127+ x86_64)

dmesg:
[  275.893022] BUG: unable to handle kernel paging request at 0000000080000088
[  275.894967] IP: [<ffffffffa010bb7e>] capture_bo+0x4/0x14d [i915]
[  275.896965] PGD 0
[  275.898889] Oops: 0000 [#1] SMP
[  275.900870] Modules linked in: netconsole configfs dm_mod snd_hda_codec_hdmi
snd_hda_codec_idt iTCO_wdt iTCO_vendor_support ppdev snd_hda_codec_generic
pcspkr serio_raw firewire_ohci firewire_core crc_itu_t snd_hda_intel uvcvideo
snd_hda_controller videobuf2_vmalloc videobuf2_memops snd_hda_codec
videobuf2_core snd_hwdep v4l2_common snd_pcm videodev lpc_ich mfd_core
snd_timer snd soundcore wmi battery parport_pc parport tpm_infineon tpm_tis tpm
ac acpi_cpufreq joydev i915 button video drm_kms_helper drm cfbfillrect
cfbimgblt cfbcopyarea [last unloaded: netconsole]
[  275.907811] CPU: 1 PID: 0 Comm: swapper/1 Not tainted
3.19.0-rc6_drm-intel-nightly_2c2cd3_20150127+ #982
[  275.910131] Hardware name: Hewlett-Packard HP EliteBook 8460p/161C, BIOS
68SCF Ver. F.22 12/22/2011
[  275.912487] task: ffff880138b81000 ti: ffff880138b90000 task.ti:
ffff880138b90000
[  275.914836] RIP: 0010:[<ffffffffa010bb7e>]  [<ffffffffa010bb7e>]
capture_bo+0x4/0x14d [i915]
[  275.917356] RSP: 0018:ffff88013dc43ce0  EFLAGS: 00010207
[  275.919829] RAX: 0000000080000000 RBX: ffff8800022ec000 RCX:
ffff88001e8e1640
[  275.922335] RDX: ffff88001e8ec080 RSI: ffff880002957d38 RDI:
ffff88001e8e1620
[  275.924819] RBP: ffff880002957cb8 R08: ffff880002957d38 R09:
ffff880002e9fd78
[  275.927321] R10: 0000000000000604 R11: ffff880137ce1280 R12:
ffff880002950000
[  275.929827] R13: 0000000000000000 R14: 0000000000000000 R15:
00000000000000b2
[  275.932337] FS:  0000000000000000(0000) GS:ffff88013dc40000(0000)
knlGS:0000000000000000
[  275.934872] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  275.937405] CR2: 0000000080000088 CR3: 00000000b7733000 CR4:
00000000000407e0
[  275.939934] Stack:
[  275.942453]  ffffffffa00ad8bf 0000000000000300 ffff880002957d38
ffff880002e9fd78
[  275.945058]  ffff88001e8ec080 ffff88001e8e0000 ffff880100000604
ffff880100000001
[  275.947692]  ffff880002957d98 ffff880002957ca8 ffff880133b23800
ffff88001e8e1640
[  275.950344] Call Trace:
[  275.952966]  <IRQ>
[  275.952998]  [<ffffffffa00ad8bf>] ? i915_capture_error_state+0x681/0x1382
[i915]
[  275.958324]  [<ffffffffa00b58b8>] ? i915_handle_error+0x7a/0x599 [i915]
[  275.961045]  [<ffffffffa00b6143>] ? i915_hangcheck_elapsed+0x320/0x3b5
[i915]
[  275.963781]  [<ffffffffa00b5e23>] ? i915_queue_hangcheck+0x4c/0x4c [i915]
[  275.966454]  [<ffffffff8107bfe1>] ? call_timer_fn+0x46/0xe2
[  275.969132]  [<ffffffffa00b5e23>] ? i915_queue_hangcheck+0x4c/0x4c [i915]
[  275.971757]  [<ffffffff8107c426>] ? run_timer_softirq+0x1af/0x212
[  275.974362]  [<ffffffff8103eb34>] ? __do_softirq+0xdc/0x22f
[  275.976921]  [<ffffffff8103edbb>] ? irq_exit+0x34/0x78
[  275.979431]  [<ffffffff81026bee>] ? smp_apic_timer_interrupt+0x39/0x43
[  275.981960]  [<ffffffff817a056a>] ? apic_timer_interrupt+0x6a/0x70
[  275.984471]  <EOI>
[  275.984494]  [<ffffffff816b2125>] ? cpuidle_enter_state+0xa5/0x129
[  275.989494]  [<ffffffff816b20f1>] ? cpuidle_enter_state+0x71/0x129
[  275.991951]  [<ffffffff810655f3>] ? cpu_startup_entry+0x1db/0x2e0
[  275.994357] Code: c7 b5 5b 12 a0 e8 98 78 f0 ff b8 fb ff ff ff eb 09 b8 00
00 00 00 41 0f 4e c4 48 83 c4 30 5b 5d 41 5c 41 5d 41 5e c3 48 8b 46 48 <48> 8b
90 88 00 00 00 89 17 8b 90 90 00 00 00 89 57 04 48 8b 90
[  275.999757] RIP  [<ffffffffa010bb7e>] capture_bo+0x4/0x14d [i915]
[  276.002327]  RSP <ffff88013dc43ce0>
[  276.004851] CR2: 0000000080000088
[  276.007335] ---[ end trace 48ee3953b5483097 ]---

==Reproduce steps==
---------------------------- 
1. ./gem_evict_everything --run-subtest swapping-hang</pre>
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