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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 - [BDW regression]Mplayer xv texture causes *ERROR* Unclaimed register detected"
href="https://bugs.freedesktop.org/show_bug.cgi?id=91002">91002</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[BDW regression]Mplayer xv texture causes *ERROR* Unclaimed register detected
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>All
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux (All)
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</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>yex.tian@intel.com
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>CC</th>
<td>christophe.prigent@intel.com, intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
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<div>
<pre>Created <span class=""><a href="attachment.cgi?id=116546" name="attach_116546" title="dmesg info on stable v4.0.4">attachment 116546</a> <a href="attachment.cgi?id=116546&action=edit" title="dmesg info on stable v4.0.4">[details]</a></span>
dmesg info on stable v4.0.4
==System Environment==
-----------------------------------------------------
Regression: Yes
Non-working platforms: BDW
==Kernel==
--------------------------------------------------
Kernel: stable v4.0.4
kernel: drm-intel-fixes_245ec9
commit 245ec9d85696c3e539b23e210f248698b478379c
Author: Jani Nikula <<a href="mailto:jani.nikula@intel.com">jani.nikula@intel.com</a>>
Date: Mon Jun 15 12:59:37 2015 +0300
Revert "drm/i915: Don't skip request retirement if the active list is
empty"
This reverts commit 0aedb1626566efd72b369c01992ee7413c82a0c5.
==Bug detailed description==
--------------------------------------------------
Mplayer xv texture causes *ERROR* Unclaimed register detected on stable v4.0.4
kernel, It does not exists on the latest drm-intel-nightly branch kernel. It
causes Call trace on latest drm-intel-fixes branch kernel.
Stable v4.0.4 output info:
[drm:hsw_unclaimed_reg_detect.isra.8 [i915]] *ERROR* Unclaimed register
detected. Please use the i915.mmio_debug=1 to debug this
problem.[drm:hsw_unclaimed_reg_detect.isra.8 [i915]] *ERROR* Unclaimed register
detected. Please use the i915.mmio_debug=1 to debug this problem.
Latest fixes kernel output info:
---------------------------------------------------------
[ 269.056863] ------------[ cut here ]------------
[ 269.056898] WARNING: CPU: 0 PID: 0 at
drivers/gpu/drm/i915/intel_uncore.c:566
hsw_unclaimed_reg_debug.isra.8+0x62/0x78 [i915]()
[ 269.056900] Unclaimed register detected before reading register 0x44200
[ 269.056901] Modules linked in: dm_mod iTCO_wdt iTCO_vendor_support ppdev
snd_hda_codec_hdmi pcspkr snd_hda_intel snd_hda_controller snd_hda_codec
i2c_i801 snd_hda_core snd_hwdep snd_pcm lpc_ich mfd_core snd_timer snd
soundcore battery parport_pc parport ac acpi_cpufreq joydev i915 button video
drm_kms_helper drm
[ 269.056915] CPU: 0 PID: 0 Comm: swapper/0 Not tainted
4.1.0-rc8_drm-intel-fixes_245ec9_20150616+ #1504
[ 269.056917] 0000000000000000 0000000000000009 ffffffff817a74cc
ffff88014ec03dc8
[ 269.056920] ffffffff8103ebde ffff88014a004960 ffffffffa00bddfe
ffff88014a004980
[ 269.056922] ffff8801445b0068 0000000000044200 ffff8801445b0070
ffff8801445b0068
[ 269.056924] Call Trace:
[ 269.056925] <IRQ> [<ffffffff817a74cc>] ? dump_stack+0x40/0x50
[ 269.056932] [<ffffffff8103ebde>] ? warn_slowpath_common+0x98/0xb0
[ 269.056945] [<ffffffffa00bddfe>] ? hsw_unclaimed_reg_debug.isra.8+0x62/0x78
[i915]
[ 269.056947] [<ffffffff8103ec3b>] ? warn_slowpath_fmt+0x45/0x4a
[ 269.056950] [<ffffffff8106005f>] ? select_task_rq_fair+0x231/0x59d
[ 269.056962] [<ffffffffa00bddfe>] ? hsw_unclaimed_reg_debug.isra.8+0x62/0x78
[i915]
[ 269.056972] [<ffffffffa00bdfbf>] ? gen6_read32+0x49/0x163 [i915]
[ 269.056985] [<ffffffffa00ac286>] ? gen8_irq_handler+0x4b/0x345 [i915]
[ 269.056988] [<ffffffff81075e94>] ? handle_irq_event_percpu+0x34/0x15b
[ 269.056991] [<ffffffff810862c3>] ? update_wall_time+0x52b/0x544
[ 269.056993] [<ffffffff81075fe9>] ? handle_irq_event+0x2e/0x4d
[ 269.056995] [<ffffffff81078648>] ? handle_edge_irq+0xba/0xcf
[ 269.056998] [<ffffffff810041b5>] ? handle_irq+0x15/0x20
[ 269.057000] [<ffffffff81003c78>] ? do_IRQ+0x41/0xc0
[ 269.057002] [<ffffffff817adaeb>] ? common_interrupt+0x6b/0x6b
[ 269.057003] <EOI> [<ffffffff816be8a9>] ? cpuidle_enter_state+0xd4/0x188
[ 269.057009] [<ffffffff816be855>] ? cpuidle_enter_state+0x80/0x188
[ 269.057011] [<ffffffff81069588>] ? cpu_startup_entry+0x204/0x31c
[ 269.057014] [<ffffffff81c99e1c>] ? start_kernel+0x413/0x41e
[ 269.057017] [<ffffffff81c99813>] ? set_init_arg+0x4e/0x4e
[ 269.057019] ---[ end trace 108f4de1dece6be6 ]---
==Reproduce steps==
----------------------------
1, xinit&
2, mplayer -vo xv:adaptor=0 xxx</pre>
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