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<base href="https://bugs.freedesktop.org/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [SKL desktop] "testdisplay -a" causes Call Trace"
href="https://bugs.freedesktop.org/show_bug.cgi?id=90237">90237</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[SKL desktop] "testdisplay -a" causes Call Trace
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux (All)
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>major
</td>
</tr>
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Component</th>
<td>DRM/Intel
</td>
</tr>
<tr>
<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>lei.a.liu@intel.com
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=115446" name="attach_115446" title="dmesg">attachment 115446</a> <a href="attachment.cgi?id=115446&action=edit" title="dmesg">[details]</a></span>
dmesg
==System Environment==
--------------------------
Regression: No. This is first time test on this machine.
Non-working platforms: SKL
==kernel==
--------------------------
-nightly: 9a4da5ec419897b78c1d4a3949c0c049db5402c5 (fails)
drm-intel-nightly: 2015y-04m-28d-14h-41m-15s UTC integration manifest
-queued: de4de566f84b87f4d5f8265b11932088adb19896 (fails)
drm/i915: Update DRIVER_DATE to 20150423
-fixes: a04f90a33fab74789b91fc9739999012f11022d1 (fails)
drm/i915/chv: Implement WaDisableShadowRegForCpd
==Bug detailed description==
-----------------------------
Dmesg shows:
[ 656.766628] ------------[ cut here ]------------
[ 656.766644] WARNING: CPU: 4 PID: 5339 at
drivers/gpu/drm/i915/intel_display.c:12008 check_crtc_state+0xb38/0xbc2
[i915]()
[ 656.766645] pipe state doesn't match!
[ 656.766646] Modules linked in: dm_mod snd_hda_codec_hdmi
snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel snd_hda_controller
snd_hda_codec snd_hda_core snd_hwdep serio_raw snd_pcm pcspkr snd_timer snd
soundcore i2c_i801 ppdev wmi battery parport_pc parport ac acpi_cpufreq i915
button video drm_kms_helper drm cfbfillrect cfbimgblt cfbcopyarea
[ 656.766667] CPU: 4 PID: 5339 Comm: testdisplay Tainted: G U W
4.0.0_drm-intel-testing_43d9c2_20150424_+ #183
[ 656.766669] Hardware name: Intel Corporation Skylake Client platform/Skylake
Halo DDR4 RVP11, BIOS SKLSE2R1.86C.X075.R04.1503240732 03/24/2015
[ 656.766670] 0000000000000009 ffff8804567ab738 ffffffff81859db8
0000000000000000
[ 656.766674] ffff8804567ab788 ffff8804567ab778 ffffffff8104227c
ffff8804567ab780
[ 656.766676] ffffffffa00f06bf ffff88045a8f1000 ffff88045aa2d000
ffff88045aa2d728
[ 656.766679] Call Trace:
[ 656.766685] [<ffffffff81859db8>] dump_stack+0x45/0x57
[ 656.766688] [<ffffffff8104227c>] warn_slowpath_common+0xa1/0xbb
[ 656.766703] [<ffffffffa00f06bf>] ? check_crtc_state+0xb38/0xbc2 [i915]
[ 656.766706] [<ffffffff81042339>] warn_slowpath_fmt+0x46/0x48
[ 656.766720] [<ffffffffa00f06bf>] check_crtc_state+0xb38/0xbc2 [i915]
[ 656.766737] [<ffffffffa010030b>] intel_modeset_check_state+0x65c/0xa57
[i915]
[ 656.766752] [<ffffffffa0101188>] intel_crtc_set_config+0x99f/0xc6e [i915]
[ 656.766755] [<ffffffff8108ba1f>] ? vprintk_default+0x1d/0x1f
[ 656.766764] [<ffffffffa00139c4>] ? drm_ut_debug_printk+0x55/0x57 [drm]
[ 656.766774] [<ffffffffa001924c>] drm_mode_set_config_internal+0x5c/0xf7
[drm]
[ 656.766784] [<ffffffffa001d5ec>] drm_mode_setcrtc+0x465/0x50f [drm]
[ 656.766791] [<ffffffffa0010c73>] drm_ioctl+0x285/0x3f1 [drm]
[ 656.766800] [<ffffffffa001d187>] ? drm_mode_setplane+0x19d/0x19d [drm]
[ 656.766803] [<ffffffff8107e361>] ? trace_hardirqs_on+0xd/0xf
[ 656.766806] [<ffffffff81154208>] do_vfs_ioctl+0x47b/0x4c3
[ 656.766809] [<ffffffff81862311>] ? retint_swapgs+0xe/0x44
[ 656.766811] [<ffffffff811542a3>] SyS_ioctl+0x53/0x84
[ 656.766814] [<ffffffff81861732>] system_call_fastpath+0x12/0x17
[ 656.766816] ---[ end trace d51b27aa9c815feb ]---
==Reproduce steps==
----------------------------
./testdisplay -a</pre>
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