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<base href="https://bugs.freedesktop.org/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [BYT Regression]igt/drv_missed_irq_hang causes warning at drivers/gpu/drm/i915/i915_gem_execbuffer.c:126 eb_lookup_vmas+0x137/0x2ff [i915]()"
href="https://bugs.freedesktop.org/show_bug.cgi?id=87577">87577</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[BYT Regression]igt/drv_missed_irq_hang causes warning at drivers/gpu/drm/i915/i915_gem_execbuffer.c:126 eb_lookup_vmas+0x137/0x2ff [i915]()
</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>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>high
</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>huax.lu@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=111146" name="attach_111146" title="dmesg">attachment 111146</a> <a href="attachment.cgi?id=111146&action=edit" title="dmesg">[details]</a></span>
dmesg
==System Environment==
--------------------------
Regression: Yes
good commit: 372ee59699d9704086dadb084209542d10e28851
bad commit: 140fd38dc4962ae3694f81900b51c567df1b6d33
==kernel==
--------------------------
drm-intel-nightly/4fa23142a15526f4a4b5df61f26eacdd558a849a
commit 4fa23142a15526f4a4b5df61f26eacdd558a849a
Author: Daniel Vetter <<a href="mailto:daniel.vetter@ffwll.ch">daniel.vetter@ffwll.ch</a>>
Date: Fri Dec 19 15:33:33 2014 +0100
drm-intel-nightly: 2014y-12m-19d-14h-33m-07s UTC integration manifest
==Bug detailed description==
-----------------------------
It causes WARNING: CPU: 3 PID: 4428 at
drivers/gpu/drm/i915/i915_gem_execbuffer.c:126 eb_lookup_vmas+0x137/0x2ff
[i915]() on drm-intel-nightly and drm-intel-next-queued kernel. Works well on
-fixes kernel.
output:
Interrupts masked
Interrupts unmasked
Cleared missed interrupts
dmesg:
[ 233.078338] ------------[ cut here ]------------
[ 233.078372] WARNING: CPU: 3 PID: 4428 at
drivers/gpu/drm/i915/i915_gem_execbuffer.c:126 eb_lookup_vmas+0x137/0x2ff
[i915]()
[ 233.078375] GPU use of dumb buffer is illegal.
[ 233.078378] Modules linked in: dm_mod uvcvideo videobuf2_vmalloc
videobuf2_memops videobuf2_core v4l2_common videodev snd_hda_codec_hdmi
snd_hda_codec_conexant snd_hda_codec_generic iTCO_wdt iTCO_vendor_support
snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep pcspkr snd_pcm
snd_timer i2c_i801 lpc_ich snd mfd_core r8169 soundcore battery wmi ac
acpi_cpufreq i915 button video drm_kms_helper drm cfbfillrect cfbimgblt
cfbcopyarea
[ 233.078417] CPU: 3 PID: 4428 Comm: gem_exec_blt Not tainted
3.18.0_drm-intel-nightly_4fa231_20141222+ #2936
[ 233.078420] 0000000000000000 0000000000000009 ffffffff8178d5e2
ffff88007298bbb8
[ 233.078426] ffffffff8103a8cc ffff880072a1c588 ffffffffa0099bff
ffff880072a1c530
[ 233.078430] ffff88017a14ca80 ffff8801797e2b80 0000000000000002
ffff88007298be18
[ 233.078436] Call Trace:
[ 233.078446] [<ffffffff8178d5e2>] ? dump_stack+0x41/0x51
[ 233.078453] [<ffffffff8103a8cc>] ? warn_slowpath_common+0x78/0x90
[ 233.078475] [<ffffffffa0099bff>] ? eb_lookup_vmas+0x137/0x2ff [i915]
[ 233.078481] [<ffffffff8103a97c>] ? warn_slowpath_fmt+0x45/0x4a
[ 233.078503] [<ffffffffa0099bff>] ? eb_lookup_vmas+0x137/0x2ff [i915]
[ 233.078525] [<ffffffffa009a746>] ?
i915_gem_do_execbuffer.isra.12+0x53d/0xcf2 [i915]
[ 233.078533] [<ffffffff81109e65>] ? __kmalloc+0x66/0x149
[ 233.078554] [<ffffffffa009be46>] ? i915_gem_execbuffer2+0x172/0x208 [i915]
[ 233.078576] [<ffffffffa009bcd4>] ? i915_gem_execbuffer+0x350/0x350 [i915]
[ 233.078590] [<ffffffffa00106be>] ? drm_ioctl+0x279/0x3bc [drm]
[ 233.078611] [<ffffffffa009bcd4>] ? i915_gem_execbuffer+0x350/0x350 [i915]
[ 233.078619] [<ffffffff8111e6df>] ? do_vfs_ioctl+0x3ec/0x435
[ 233.078625] [<ffffffff811261e4>] ? __fd_install+0x15/0x43
[ 233.078630] [<ffffffff8111e771>] ? SyS_ioctl+0x49/0x78
[ 233.078636] [<ffffffff81792c92>] ? system_call_fastpath+0x12/0x17
[ 233.078640] ---[ end trace 7d0771fa216d9063 ]---
==Reproduce steps==
----------------------------
1. ./drv_missed_irq_hang</pre>
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