[Bug 75247] New: [BYT]igt/gem_render_linear_blits causes OOM killer

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=75247

          Priority: medium
            Bug ID: 75247
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [BYT]igt/gem_render_linear_blits causes OOM killer
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: huax.lu at intel.com
          Hardware: All
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Created attachment 94411
  --> https://bugs.freedesktop.org/attachment.cgi?id=94411&action=edit
dmesg

System Environment:
--------------------------
Platform: Baytrail
Kernel(drm-intel-nightly)1be8f2b4dd6d3db00af24d4891c82d2650bd282d

Bug detailed description:
------------------------- 
gem_render_linear_blits causes OOM Killer.
Run it on Baytrail with -nightly kernel and -queued kernel.
It always fails with OOM killer, run earlier kernel, It also has this issue.

case gem_render_tiled_blits also causes OOM killer.

output:
IGT-Version: 1.5-g06189c6 (x86_64) (Linux:
3.13.0_drm-intel-nightly_1be8f2_20140220+ x86_64)
Using 3072 1MiB buffers
Verifying initialisation...
Cyclic blits, forward...
Cyclic blits, backward...
Killed

[  245.094187] Call Trace:
[  245.094264]  [<ffffffff8171193b>] ? dump_stack+0x41/0x51
[  245.094334]  [<ffffffff8170df1a>] ? dump_header.isra.8+0x69/0x191
[  245.094406]  [<ffffffff8106dff5>] ? ktime_get_ts+0x49/0xab
[  245.094472]  [<ffffffff812cf77a>] ? ___ratelimit+0xae/0xc8
[  245.094538]  [<ffffffff810a33b8>] ? oom_kill_process+0x76/0x2f8
[  245.094607]  [<ffffffff810a3b4e>] ? out_of_memory+0x3b2/0x3e5
[  245.094675]  [<ffffffff810a7258>] ? __alloc_pages_nodemask+0x651/0x75e
[  245.094753]  [<ffffffff810d07c3>] ? alloc_pages_current+0xbf/0xdc
[  245.094824]  [<ffffffff810a236c>] ? filemap_fault+0x25c/0x381
[  245.094891]  [<ffffffff810b8116>] ? __do_fault+0xac/0x3bf
[  245.094955]  [<ffffffff810bb872>] ? handle_mm_fault+0x1e7/0x7e2
[  245.095025]  [<ffffffff81719cab>] ? __do_page_fault+0x41c/0x469
[  245.095095]  [<ffffffff810361a1>] ? timespec_add_safe+0x1e/0x4d
[  245.095165]  [<ffffffff810ec585>] ? dput+0x16/0xeb
[  245.095235]  [<ffffffff8106dff5>] ? ktime_get_ts+0x49/0xab
[  245.095302]  [<ffffffff810e99ae>] ? poll_select_copy_remaining+0xe0/0xf6
[  245.095380]  [<ffffffff81717272>] ? page_fault+0x22/0x30
[  245.095442] Mem-Info:
[  245.095471] Node 0 DMA per-cpu:
[  245.095515] CPU    0: hi:    0, btch:   1 usd:   0
[  245.095571] CPU    1: hi:    0, btch:   1 usd:   0
[  245.095625] Node 0 DMA32 per-cpu:
[  245.095669] CPU    0: hi:  186, btch:  31 usd:   0
[  245.095725] CPU    1: hi:  186, btch:  31 usd:   0


Reproduce steps:
-------------------------
1. ./gem_render_linear_blits

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