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<base href="https://bugs.freedesktop.org/" />
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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 --- - [BYT Bisected]igt/kms_render/direct-render and gpu-blit cause "WARNING: CPU: 1 PID: 17633 at drivers/gpu/drm/i915/intel_display.c:1746 vlv_wait_port_ready+0xe5/0x11e [i915]()""
href="https://bugs.freedesktop.org/show_bug.cgi?id=84164">84164</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>[BYT Bisected]igt/kms_render/direct-render and gpu-blit cause "WARNING: CPU: 1 PID: 17633 at drivers/gpu/drm/i915/intel_display.c:1746 vlv_wait_port_ready+0xe5/0x11e [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>==System Environment==
--------------------------
Regression: Yes.
Non-working platforms: BYT
==kernel==
--------------------------
origin/drm-intel-nightly:c5660b4ad395f1e34eacc22cf81c687edfc9c83c(fails)
drm-intel-nightly: 2014y-09m-19d-18h-12m-22s UTC integration manifest
==Bug detailed description==
-----------------------------
igt/kms_render/direct-render and gpu-blit cause "WARNING: CPU: 1 PID: 17633 at
drivers/gpu/drm/i915/intel_display.c:1746 vlv_wait_port_ready+0xe5/0x11e
[i915]()"
Dmesg:
[ 2132.759240] WARNING: CPU: 1 PID: 17633 at
drivers/gpu/drm/i915/intel_display.c:1746 vlv_wait_port_ready+0xe5/0x11e
[i915]()
[ 2132.759245] timed out waiting for port C ready: 0x000020ff
[ 2132.759249] Modules linked in: ip6table_filter ip6_tables ipv6
iptable_filter ip_tables ebtable_nat ebtables x_tables dm_mod
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic iTCO_wdt
iTCO_vendor_support snd_hda_intel snd_hda_controller serio_raw pcspkr
snd_hda_codec snd_hwdep snd_pcm snd_timer i2c_i801 lpc_ich mfd_core snd
soundcore iosf_mbi battery ac acpi_cpufreq i915 button video drm_kms_helper drm
[ 2132.759316] CPU: 1 PID: 17633 Comm: kms_render Tainted: G W
3.17.0-rc5_prts_ab7f1a_20140917_debug+ #28
[ 2132.759321] 0000000000000000 ffff880074aafa60 ffffffff8181608c
ffff880074aafaa8
[ 2132.759331] ffff880074aafa98 ffffffff8103e87f ffffffffa00cf6db
ffff880003650000
[ 2132.759340] 00000000000000f0 0000000000186014 ffff880075935000
ffff880074aafaf8
[ 2132.759349] Call Trace:
[ 2132.759361] [] dump_stack+0x45/0x56
[ 2132.759370] [] warn_slowpath_common+0x7f/0x98
[ 2132.759413] [] ? vlv_wait_port_ready+0xe5/0x11e [i915]
[ 2132.759420] [] warn_slowpath_fmt+0x4c/0x4e
[ 2132.759464] [] vlv_wait_port_ready+0xe5/0x11e [i915]
[ 2132.759508] [] vlv_pre_enable_dp+0x10a/0x115 [i915]
[ 2132.759550] [] valleyview_crtc_enable+0xa33/0xae2 [i915]
[ 2132.759593] [] __intel_set_mode+0xc77/0x127f [i915]
[ 2132.759602] [] ? trace_hardirqs_on_caller+0x16e/0x18a
[ 2132.759644] [] intel_set_mode+0x14/0x2a [i915]
[ 2132.759687] [] intel_crtc_set_config+0x9b6/0xa9f [i915]
[ 2132.759713] [] drm_mode_set_config_internal+0x55/0xe0 [drm]
[ 2132.759738] [] drm_mode_setcrtc+0x39e/0x498 [drm]
[ 2132.759759] [] drm_ioctl+0x385/0x404 [drm]
[ 2132.759783] [] ? drm_mode_setplane+0x1d8/0x1d8 [drm]
[ 2132.759792] [] ? mntput_no_expire+0x5/0x1af
[ 2132.759800] [] do_vfs_ioctl+0x3a3/0x46c
[ 2132.759808] [] ? current_kernel_time+0x61/0x9a
[ 2132.759816] [] ? trace_hardirqs_on_caller+0x16e/0x18a
[ 2132.759823] [] SyS_ioctl+0x50/0x7d
[ 2132.759831] [] system_call_fastpath+0x16/0x1b
[ 2132.759835] ---[ end trace 271f8fc0a83a07a6 ]---
[ 2132.901162] [drm:i9xx_set_fifo_underrun_reporting] *ERROR* pipe B underrun
[ 2132.901171] [drm:valleyview_pipestat_irq_handler] *ERROR* pipe B underrun
[ 2133.628905] [drm:intel_dp_complete_link_train] *ERROR* failed to train DP,
aborting
[ 2134.462175] [drm:intel_dp_complete_link_train] *ERROR* failed to train DP,
aborting",
==Reproduce steps==
----------------------------
1. ./kms_render --run-subtest direct-render
==Bisect results form [PRTS][auto-bisect]==
----------------------------
commit f81d8eba4fb4448e6ea777aa2072c3b9f277e7cb
Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
AuthorDate: Fri Sep 12 09:11:55 2014 +0100
Commit: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
CommitDate: Fri Sep 12 09:12:42 2014 +0100
igt/kms_render: Iterate only through the formats
When testing each format, iterate through the formats and not randomly
through the modes.
Bugzilla: <a class="bz_bug_link
bz_status_VERIFIED bz_closed"
title="VERIFIED FIXED - [BDW Regression]igt/kms_render/direct-render fails"
href="show_bug.cgi?id=83788">https://bugs.freedesktop.org/show_bug.cgi?id=83788</a>
Signed-off-by: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>></pre>
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