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<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 --- - [HSW Regression]igt/pm_rpm/system-suspend cause " WARNING: CPU: 0 PID: 786 at drivers/gpu/drm/i915/i915_irq.c:209 gen6_enable_rps_interrupts+0x39/0x5c [i915]()""
href="https://bugs.freedesktop.org/show_bug.cgi?id=80517">80517</a>
</td>
</tr>
<tr>
<th>Keywords</th>
<td>bisect_pending
</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>[HSW Regression]igt/pm_rpm/system-suspend cause " WARNING: CPU: 0 PID: 786 at drivers/gpu/drm/i915/i915_irq.c:209 gen6_enable_rps_interrupts+0x39/0x5c [i915]()"
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Reporter</th>
<td>jinxianx.guo@intel.com
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</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=101734" name="attach_101734" title="dmesg">attachment 101734</a> <a href="attachment.cgi?id=101734&action=edit" title="dmesg">[details]</a></span>
dmesg
==System Environment==
--------------------------
Regression: Yes.
Good commit on -next-queued: 868d665b43473e230d560d5186535270a3d57a19
Non-working platforms: HSW
==kernel==
--------------------------
origin/drm-intel-nightly: 891f8a6bb39ec9a0434c4f8ba468d203e89bf7cd(fails)
drm-intel-nightly: 2014y-06m-24d-16h-16m-36s integration manifest
origin/drm-intel-next-queued: 9c33baa6b3bbb01c1a88dceba986b20e6642cf31(fails)
drivers/i915: Fix unnoticed failure of init_ring_common()
origin/drm-intel-fixes: 5b5ffff0d25060ab0e21fa0f6cd16428e87bf1ea(works)
drm/i915: Hold the table lock whilst walking the file's idr and counting
the objects in debugfs
==Bug detailed description==
-----------------------------
igt/pm_rpm/system-suspend cause "WARNING: CPU: 0 PID: 786 at
drivers/gpu/drm/i915/i915_irq.c:209 gen6_enable_rps_interrupts+0x39/0x5c
[i915]()"
Dmesg shows:
[ 64.318836] WARNING: CPU: 0 PID: 786 at drivers/gpu/drm/i915/i915_irq.c:209
gen6_enable_rps_interrupts+0x39/0x5c [i915]()
[ 64.318844] Modules linked in: dm_mod snd_hda_codec_realtek iTCO_wdt
snd_hda_codec_generic iTCO_vendor_support snd_hda_codec_hdmi serio_raw pcspkr
i2c_i801 lpc_ich mfd_core snd_hda_intel snd_hda_controller snd_hda_codec
snd_hwdep snd_pcm snd_timer snd soundcore battery wmi tpm_infineon tpm_tis tpm
acpi_cpufreq i915 video button drm_kms_helper drm
[ 64.318845] CPU: 0 PID: 786 Comm: kworker/0:1 Not tainted
3.15.0-rc8_kcloud_9c33ba_20140625+ #2
[ 64.318846] Hardware name: ASUS All Series/Z87-EXPERT, BIOS 1008 05/17/2013
[ 64.318851] Workqueue: events intel_gen6_powersave_work [i915]
[ 64.318853] 0000000000000000 ffffffff8170a8d4 0000000000000000
ffffffff81033f78
[ 64.318854] ffffffffa0068408 ffff880251380000 ffff880251ac4000
0000000000040000
[ 64.318854] ffff880251388238 ffffffffa0068408 ffff880251380000
ffffffffa006e97c
[ 64.318855] Call Trace:
[ 64.318859] [<ffffffff8170a8d4>] ? dump_stack+0x41/0x51
[ 64.318861] [<ffffffff81033f78>] ? warn_slowpath_common+0x6f/0x84
[ 64.318867] [<ffffffffa0068408>] ? gen6_enable_rps_interrupts+0x39/0x5c
[i915]
[ 64.318872] [<ffffffffa0068408>] ? gen6_enable_rps_interrupts+0x39/0x5c
[i915]
[ 64.318877] [<ffffffffa006e97c>] ? intel_gen6_powersave_work+0xe04/0xefe
[i915]
[ 64.318880] [<ffffffff81044d0c>] ? process_one_work+0x1c1/0x2ca
[ 64.318881] [<ffffffff8104584d>] ? worker_thread+0x1c9/0x2ad
[ 64.318882] [<ffffffff81045684>] ? rescuer_thread+0x267/0x267
[ 64.318883] [<ffffffff81049dc2>] ? kthread+0xca/0xd2
[ 64.318884] [<ffffffff81049cf8>] ? kthread_create_on_node+0x15d/0x15d
[ 64.318887] [<ffffffff81714dbc>] ? ret_from_fork+0x7c/0xb0
[ 64.318888] [<ffffffff81049cf8>] ? kthread_create_on_node+0x15d/0x15d
==Reproduce steps==
----------------------------
1. ./pm_rpm --run-subtest system-suspend</pre>
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