<html>
<head>
<base href="https://bugs.freedesktop.org/" />
</head>
<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/pm_rpm some subcases causes "WARNING: CPU: 0 PID: 4556 at drivers/gpu/drm/i915/intel_uncore.c:47 gen6_read32+0x26/0x101 [i915]()""
href="https://bugs.freedesktop.org/show_bug.cgi?id=84029">84029</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>[BDW Regression]igt/pm_rpm some subcases causes "WARNING: CPU: 0 PID: 4556 at drivers/gpu/drm/i915/intel_uncore.c:47 gen6_read32+0x26/0x101 [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=106478" name="attach_106478" title="dmesg">attachment 106478</a> <a href="attachment.cgi?id=106478&action=edit" title="dmesg">[details]</a></span>
dmesg
==System Environment==
--------------------------
Regression: Yes.
Good commit on -fixes: e76c8c5979021483a3a6b480cfe360c644a403c0
Non-working platforms: BDW
==kernel==
--------------------------
origin/drm-intel-nightly:3e5e5913a80f593aa8f67784220eac2658034c6c(fails)
drm-intel-nightly: 2014y-09m-17d-16h-09m-44s UTC integration manifest
origin/drm-intel-next-queued:de6a03dbc12c72e8ddd936071936fe96633c9d05(works)
drm/i915: Clarify mmio_flip_lock locking
origin/drm-intel-fixes: d72985765e986f45a28f87d75f3f0ece489b04cc(fails)
drm/i915: Add limited color range readout for HDMI/DP ports on g4x/vlv/chv
==Bug detailed description==
-----------------------------
igt/pm_rpm some subcases causes "WARNING: CPU: 0 PID: 4556 at
drivers/gpu/drm/i915/intel_uncore.c:47 gen6_read32+0x26/0x101 [i915]()"
Case list:
igt/pm_rpm/dpms-lpsp
igt/pm_rpm/dpms-mode-unset-lpsp
igt/pm_rpm/drm-resources-equal
igt/pm_rpm/fences
igt/pm_rpm/gem-execbuf
igt/pm_rpm/gem-mmap-cpu
igt/pm_rpm/gem-mmap-gtt
igt/pm_rpm/gem-pread
igt/pm_rpm/i2c
igt/pm_rpm/modeset-lpsp
igt/pm_rpm/modeset-lpsp-stress
igt/pm_rpm/pci-d3-state
igt/pm_rpm/rte
Output:
root@x-bdw05:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# ./pm_rpm
--run-subtest dpms-lpsp
IGT-Version: 1.8-g1244fc6 (x86_64) (Linux:
3.17.0-rc5_drm-intel-nightly_3e5e59_20140918+ x86_64)
Runtime PM support: 1
PC8 residency support: 1
Subtest dpms-lpsp: SUCCESS (1.386s)
root@x-bdw05:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# dmesg -r|egrep
""<[1-4]>""|grep drm
<4>[ 43.190160] WARNING: CPU: 0 PID: 4556 at
drivers/gpu/drm/i915/intel_uncore.c:47 gen6_read32+0x26/0x101 [i915]()
<4>[ 43.190162] Modules linked in: dm_mod iTCO_wdt iTCO_vendor_support ppdev
snd_hda_codec_hdmi pcspkr i2c_i801 snd_hda_intel snd_hda_controller
snd_hda_codec snd_hwdep lpc_ich snd_pcm mfd_core snd_timer snd soundcore
battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
cfbfillrect cfbimgblt cfbcopyarea
<4>[ 43.190179] CPU: 0 PID: 4556 Comm: pm_rpm Not tainted
3.17.0-rc5_drm-intel-nightly_3e5e59_20140918+ #2584
<4>[ 43.190287] [<ffffffffa0017fe5>] ?
drm_mode_set_config_internal+0x48/0xbd [drm]
<4>[ 43.190294] [<ffffffffa001ba0e>] ? drm_mode_setcrtc+0x3e6/0x48b [drm]
<4>[ 43.190301] [<ffffffffa001074c>] ? drm_ioctl+0x279/0x3bc [drm]
<4>[ 43.190312] [<ffffffffa001b628>] ? drm_mode_setplane+0x1ce/0x1ce [drm]
==Reproduce steps==
----------------------------
1. ./pm_rpm --run-subtest dpms-lpsp</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are the QA Contact for the bug.</li>
<li>You are on the CC list for the bug.</li>
<li>You are the assignee for the bug.</li>
</ul>
</body>
</html>