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    <head>
      <base href="https://bugs.freedesktop.org/" />
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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Priority</th>
          <td>high
          </td>
        </tr>

        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - [BDW Regression]igt/kms_flip/flip-vs-fences fails with OOM killer"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=76308">76308</a>
          </td>
        </tr>

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

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

        <tr>
          <th>Summary</th>
          <td>[BDW Regression]igt/kms_flip/flip-vs-fences fails with OOM killer
          </td>
        </tr>

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

        <tr>
          <th>Severity</th>
          <td>major
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr>

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

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

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

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

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

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

        <tr>
          <th>Product</th>
          <td>DRI
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=95991" name="attach_95991" title="dmesg">attachment 95991</a> <a href="attachment.cgi?id=95991&action=edit" title="dmesg">[details]</a></span>
dmesg

System Environment:
--------------------------
Platform: Broadwell
kernel: (drm-intel-nightly)b1859622badb7509586987af5269aa525a0c112f

Bug detailed description:
-------------------------
It fails with OOM killer on Broadwell with -nightly kernel, and doesn't happen
on -fixes, -queued, drm-next, drm-fixes and core-stuff branch.
igt/kms_flip/flip-vs-fences-interruptible also fails.

It doesn't happen on commit: 32faf6da913d67a4a3fcddd810305ec3445ed581(-nightly
branch)

output:
IGT-Version: 1.6-g10571b8 (x86_64) (Linux:
3.14.0-rc6_drm-intel-nightly_b18596_20140314+ x86_64)
Using monotonic timestamps
Beginning flip-vs-fences on crtc 3, connector 10
  1920x1080 60 1920 1966 1996 2080 1080 1082 1086 1112 0xa 0x48 138780
...............................................................................................................................
flip-vs-fences on crtc 3, connector 10: PASSED

Beginning flip-vs-fences on crtc 5, connector 10
  1920x1080 60 1920 1966 1996 2080 1080 1082 1086 1112 0xa 0x48 138780
..............................Killed

[  158.480224] Call Trace:
[  158.480237]  [<ffffffff817170e3>] ? dump_stack+0x41/0x51
[  158.480244]  [<ffffffff817143b1>] ? dump_header.isra.8+0x69/0x191
[  158.480253]  [<ffffffff8107225e>] ? ktime_get_ts+0x49/0xab
[  158.480262]  [<ffffffff812d6cf2>] ? ___ratelimit+0xae/0xc8
[  158.480271]  [<ffffffff810a7244>] ? oom_kill_process+0x76/0x32c
[  158.480278]  [<ffffffff810a7009>] ? find_lock_task_mm+0x22/0x6e
[  158.480288]  [<ffffffff8103af8a>] ? has_ns_capability_noaudit+0xe/0x15
[  158.480295]  [<ffffffff810a7a79>] ? out_of_memory+0x41c/0x44f
[  158.480301]  [<ffffffff810ab2bd>] ? __alloc_pages_nodemask+0x680/0x78d
[  158.480310]  [<ffffffff810d4a2b>] ? alloc_pages_current+0xbf/0xdc
[  158.480317]  [<ffffffff810a6196>] ? filemap_fault+0x25c/0x381
[  158.480325]  [<ffffffff810bc2a1>] ? __do_fault+0xac/0x3bf
[  158.480332]  [<ffffffff810bfa31>] ? handle_mm_fault+0x1e7/0x7e2
[  158.480341]  [<ffffffff8171f4bd>] ? __do_page_fault+0x42e/0x47b
[  158.480348]  [<ffffffff81038055>] ? timespec_add_safe+0x1e/0x4d
[  158.480353]  [<ffffffff810f08e8>] ? dput+0x16/0xeb
[  158.480359]  [<ffffffff8107225e>] ? ktime_get_ts+0x49/0xab
[  158.480368]  [<ffffffff810edcfa>] ? poll_select_copy_remaining+0xe0/0xf6
[  158.480374]  [<ffffffff8171ca72>] ? page_fault+0x22/0x30
[  158.480377] Mem-Info:
[  158.480380] Node 0 DMA per-cpu:
[  158.480385] CPU    0: hi:    0, btch:   1 usd:   0
[  158.480389] CPU    1: hi:    0, btch:   1 usd:   0
[  158.480392] CPU    2: hi:    0, btch:   1 usd:   0
[  158.480396] CPU    3: hi:    0, btch:   1 usd:   0
[  158.480398] Node 0 DMA32 per-cpu:
[  158.480403] CPU    0: hi:  186, btch:  31 usd:   0
[  158.480407] CPU    1: hi:  186, btch:  31 usd:   0
[  158.480410] CPU    2: hi:  186, btch:  31 usd:   0
[  158.480413] CPU    3: hi:  186, btch:  31 usd:   0
[  158.480436] Node 0 Normal per-cpu:
[  158.480440] CPU    0: hi:  186, btch:  31 usd:   0
[  158.480443] CPU    1: hi:  186, btch:  31 usd:   0
[  158.480446] CPU    2: hi:  186, btch:  31 usd:   0
[  158.480449] CPU    3: hi:  186, btch:  31 usd:   0


Reproduce steps:
---------------------------- 
1. ./kms_flip --run-subtest flip-vs-fences</pre>
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