[Bug 76308] New: [BDW Regression]igt/kms_flip/flip-vs-fences fails with OOM killer

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=76308

          Priority: high
            Bug ID: 76308
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [BDW Regression]igt/kms_flip/flip-vs-fences fails with
                    OOM killer
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: major
    Classification: Unclassified
                OS: Linux (All)
          Reporter: huax.lu at intel.com
          Hardware: All
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Created attachment 95991
  --> https://bugs.freedesktop.org/attachment.cgi?id=95991&action=edit
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

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