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<head>
<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 --- - [BYT Regression]igt/kms_flip some subcases cause "WARNING: CPU: 0 PID: 3733 at drivers/gpu/drm/i915/intel_display.c:1231 __intel_set_mode+0xc59/0x1275 [i915]()""
href="https://bugs.freedesktop.org/show_bug.cgi?id=81160">81160</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>[BYT Regression]igt/kms_flip some subcases cause "WARNING: CPU: 0 PID: 3733 at drivers/gpu/drm/i915/intel_display.c:1231 __intel_set_mode+0xc59/0x1275 [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=102526" name="attach_102526" title="dmesg">attachment 102526</a> <a href="attachment.cgi?id=102526&action=edit" title="dmesg">[details]</a></span>
dmesg
==System Environment==
--------------------------
Regression: Yes.
Good commit on -next-queued: 192155025197cc4765702a180904c3b62c152b7a
Non-working platforms: BYT
==kernel==
--------------------------
origin/drm-intel-nightly: 16025dad8e9964a5810385f755d43f1c48d6fdcc(fails)
drm-intel-nightly: 2014y-07m-09d-14h-17m-14s integration manifest
origin/drm-intel-next-queued: d101c8fe9bda6578ae72d6021415cfaad2b422f0(fails)
drm/i915: remove i915_rstdby_delays debugfs entry
origin/drm-intel-fixes: 01527b3127997ef6370d5ad4fa25d96847fbf12a(works)
drm/i915/vlv: T12 eDP panel timing enforcement during reboot
==Bug detailed description==
igt/kms_flip some subcases cause "WARNING: CPU: 0 PID: 3733 at
drivers/gpu/drm/i915/intel_display.c:1231 __intel_set_mode+0xc59/0x1275
[i915]()"
Case list:
igt/kms_flip/bcs-flip-vs-dpms
igt/kms_flip/bcs-flip-vs-dpms-interruptible
igt/kms_flip/bcs-wf_vblank-vs-dpms
igt/kms_flip/bcs-wf_vblank-vs-dpms-interruptible
Dmesg shows:
[ 192.448191] WARNING: CPU: 0 PID: 3733 at
drivers/gpu/drm/i915/intel_display.c:1231 __intel_set_mode+0xc59/0x1275
[i915]()
[ 192.448194] cursor on pipe B assertion failure (expected off, current on)
[ 192.448196] 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 serio_raw snd_hda_controller pcspkr
snd_hda_codec i2c_i801 lpc_ich mfd_core snd_hwdep snd_pcm snd_timer snd
soundcore iosf_mbi battery ac acpi_cpufreq joydev i915 video button
drm_kms_helper drm
[ 192.448228] CPU: 0 PID: 3733 Comm: kms_flip Tainted: G W
3.16.0-rc4_drm-intel-nightly_16025d_20140710+ #378
[ 192.448230] 0000000000000000 0000000000000009 ffffffff817803cd
ffff880002bafb38
[ 192.448235] ffffffff8103986c ffff880002bafb30 ffffffffa00b3da5
ffff880002830000
[ 192.448239] 0000000000000000 ffff880002e06000 ffff880002fa1800
0000000000000001
[ 192.448243] Call Trace:
[ 192.448248] [<ffffffff817803cd>] ? dump_stack+0x41/0x51
[ 192.448253] [<ffffffff8103986c>] ? warn_slowpath_common+0x78/0x90
[ 192.448273] [<ffffffffa00b3da5>] ? __intel_set_mode+0xc59/0x1275 [i915]
[ 192.448278] [<ffffffff8103991c>] ? warn_slowpath_fmt+0x45/0x4a
[ 192.448300] [<ffffffffa00b3da5>] ? __intel_set_mode+0xc59/0x1275 [i915]
[ 192.448304] [<ffffffff8177d3ac>] ? printk+0x4f/0x54
[ 192.448315] [<ffffffffa00073c0>] ? drm_ut_debug_printk+0x59/0x5e [drm]
[ 192.448336] [<ffffffffa00ba47a>] ? intel_set_mode+0xd/0x27 [i915]
[ 192.448357] [<ffffffffa00bb057>] ? intel_crtc_set_config+0x705/0xa5b [i915]
[ 192.448362] [<ffffffff81784451>] ? __ww_mutex_lock+0x15/0x8a
[ 192.448374] [<ffffffffa000beea>] ? drm_mode_set_config_internal+0x4b/0xb3
[drm]
[ 192.448385] [<ffffffffa000c13f>] ? drm_framebuffer_remove+0x72/0xf9 [drm]
[ 192.448396] [<ffffffffa000fa83>] ? drm_mode_rmfb+0xc3/0xec [drm]
[ 192.448405] [<ffffffffa0002f70>] ? drm_ioctl+0x27a/0x3c0 [drm]
[ 192.448416] [<ffffffffa000f9c0>] ? drm_mode_addfb2+0x2d/0x2d [drm]
[ 192.448420] [<ffffffff8100a810>] ? init_fpu+0x6f/0x83
[ 192.448425] [<ffffffff81104e0d>] ? kmem_cache_free+0xf7/0x135
[ 192.448429] [<ffffffff81119973>] ? do_vfs_ioctl+0x3ec/0x435
[ 192.448434] [<ffffffff81119a05>] ? SyS_ioctl+0x49/0x78
[ 192.448438] [<ffffffff8109f1b0>] ? __audit_syscall_exit+0x209/0x225
[ 192.448443] [<ffffffff81785f52>] ? system_call_fastpath+0x16/0x1b
==Reproduce steps==
----------------------------
1. ./gem_render_copy_redux</pre>
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