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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 - WARNING: CPU: 1 PID: 1395 at drivers/gpu/drm/i915/i915_gem_execbuffer.c:125 eb_lookup_vmas.isra.15+0x345/0x3e0 [i915]()"
href="https://bugs.freedesktop.org/show_bug.cgi?id=87060">87060</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>WARNING: CPU: 1 PID: 1395 at drivers/gpu/drm/i915/i915_gem_execbuffer.c:125 eb_lookup_vmas.isra.15+0x345/0x3e0 [i915]()
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>x86-64 (AMD64)
</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>chris.cheney@gmail.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=110520" name="attach_110520" title="dmesg output showing problem">attachment 110520</a> <a href="attachment.cgi?id=110520&action=edit" title="dmesg output showing problem">[details]</a></span>
dmesg output showing problem
<a class="bz_bug_link
bz_status_NEW "
title="NEW - [HSW] HDMI monitor does not work via active DisplayPort adapter"
href="show_bug.cgi?id=83600">Bug 83600</a> is the original master bug for the problem I am having. I tested
drm-intel-nightly bfdd01aa1825aa0068f9236b21362b550f6d630f via Ubuntu daily
build and now have the following problem. I still have problems with the DP
connector not working until I run the commands noted in <a href="show_bug.cgi?id=87060#c7">comment #7</a> on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [HSW] HDMI monitor does not work via active DisplayPort adapter"
href="show_bug.cgi?id=83600">Bug
83600</a>, which is what you see starting at time 70.398954 in the dmesg output. I
have attached the exact set of commands to this bz along with dmesg with
drm.debug=0xe log_buf_len=4M.
[ 3.571751] ------------[ cut here ]------------
[ 3.571786] WARNING: CPU: 1 PID: 1395 at
/home/apw/COD/linux/drivers/gpu/drm/i915/i915_gem_execbuffer.c:125
eb_lookup_vmas.isra.15+0x345/0x3e0 [i915]()
[ 3.571787] GPU use of dumb buffer is illegal.
[ 3.571788] Modules linked in: rfcomm bnep bluetooth intel_rapl
x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm mxm_wmi
crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw
gf128mul glue_helper ablk_helper cryptd serio_raw snd_hda_codec_hdmi
snd_hda_codec_realtek snd_hda_codec_generic lpc_ich mei_me mei shpchp
8250_fintek wmi mac_hid tpm_infineon snd_hda_intel snd_hda_controller
snd_hda_codec snd_hwdep i915 snd_pcm snd_seq_midi snd_seq_midi_event
snd_rawmidi snd_seq video drm_kms_helper snd_seq_device snd_timer drm snd
soundcore parport_pc ppdev lp parport nls_iso8859_1 psmouse igb e1000e
firewire_ohci i2c_algo_bit firewire_core dca ahci ptp crc_itu_t libahci
pps_core
[ 3.571814] CPU: 1 PID: 1395 Comm: Xorg Not tainted 3.18.0-994-generic
#201412052105
[ 3.571815] Hardware name: Gigabyte Technology Co., Ltd.
Z87X-UD5H/Z87X-UD5H-CF, BIOS F10 08/21/2014
[ 3.571817] 000000000000007d ffff8807f0ebfb88 ffffffff827a5d81
0000000000000007
[ 3.571818] ffff8807f0ebfbd8 ffff8807f0ebfbc8 ffffffff82074b0c
ffff8807f0fb8950
[ 3.571819] ffff8807efd08100 ffff8807efd08000 ffff8807f0ebfc78
ffff8807ef88d200
[ 3.571821] Call Trace:
[ 3.571829] [<ffffffff827a5d81>] dump_stack+0x46/0x58
[ 3.571835] [<ffffffff82074b0c>] warn_slowpath_common+0x8c/0xc0
[ 3.571836] [<ffffffff82074bf6>] warn_slowpath_fmt+0x46/0x50
[ 3.571849] [<ffffffffc03f3715>] eb_lookup_vmas.isra.15+0x345/0x3e0 [i915]
[ 3.571857] [<ffffffffc03f41f7>] i915_gem_do_execbuffer.isra.23+0x257/0x710
[i915]
[ 3.571865] [<ffffffffc03f5474>] ? i915_gem_execbuffer2+0x84/0x2d0 [i915]
[ 3.571872] [<ffffffffc03f54b6>] i915_gem_execbuffer2+0xc6/0x2d0 [i915]
[ 3.571883] [<ffffffffc0309e56>] drm_ioctl+0x2e6/0x590 [drm]
[ 3.571891] [<ffffffffc03f53f0>] ? i915_gem_execbuffer+0x440/0x440 [i915]
[ 3.571895] [<ffffffff82202575>] do_vfs_ioctl+0x75/0x2c0
[ 3.571897] [<ffffffff8220cbb5>] ? __fget_light+0x25/0x70
[ 3.571899] [<ffffffff82202851>] SyS_ioctl+0x91/0xb0
[ 3.571901] [<ffffffff827b35ed>] system_call_fastpath+0x16/0x1b
[ 3.571902] ---[ end trace 4596cf7e65c3fd9a ]---</pre>
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