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<base href="https://bugs.freedesktop.org/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Priority</th>
<td>high
</td>
</tr>
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [Bisected]igt/gem_cs_prefetch fails with OOM killer on debug kernel"
href="https://bugs.freedesktop.org/show_bug.cgi?id=76614">76614</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>[Bisected]igt/gem_cs_prefetch fails with OOM killer on debug kernel
</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>
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<th>Product</th>
<td>DRI
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=96395" name="attach_96395" title="dmesg">attachment 96395</a> <a href="attachment.cgi?id=96395&action=edit" title="dmesg">[details]</a></span>
dmesg
System Environment:
--------------------------
Platform: Ivybridge
Kernel: drm-intel-nightly/84295583b8322f96a187c4fc5cca5dd7d511f57e/debug
Bug detailed description:
-----------------------------
It fails on all platforms with -nightly and -queued branch.It doesn't happen on
-fixes branch.
Bisect shows: c4e1acbb35e4a3838cdfc0e7f8237e844aff00b6 is the first bad commit.
commit c4e1acbb35e4a3838cdfc0e7f8237e844aff00b6
Author: Rafael J. Wysocki
Date: Thu Mar 13 00:22:58 2014 +0100
ACPI / init: Invoke early ACPI initialization later
Commit 73f7d1ca3263 (ACPI / init: Run acpi_early_init() before
timekeeping_init()) optimistically moved the early ACPI initialization
before timekeeping_init(), but that didn't work, because it broke fast
TSC calibration for Julian Wollrath on Thinkpad x121e (and most likely
for others too). The reason is that acpi_early_init() enables the SCI
and that interferes with the fast TSC calibration mechanism.
Thus follow the original idea to execute acpi_early_init() before
efi_enter_virtual_mode() to help the EFI people for now and we can
output:
IGT-Version: 1.6-g7a81094 (x86_64) (Linux:
3.14.0-rc7_drm-intel-nightly_842955_20140325_debug+ x86_64)
gem_cs_prefetch: 73%Killed
Reproduce steps:
----------------------------
1. ./gem_cs_prefetch</pre>
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