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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [SKL]igt/gem_reloc_vs_gpu doesn't exit testing and kernel BUG at drivers/gpu/drm/i915/i915_gem.c:2247!"
href="https://bugs.freedesktop.org/show_bug.cgi?id=90050">90050</a>
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<tr>
<th>Summary</th>
<td>[SKL]igt/gem_reloc_vs_gpu doesn't exit testing and kernel BUG at drivers/gpu/drm/i915/i915_gem.c:2247!
</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>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>
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<pre>Created <span class=""><a href="attachment.cgi?id=115111" name="attach_115111" title="dmesg">attachment 115111</a> <a href="attachment.cgi?id=115111&action=edit" title="dmesg">[details]</a></span>
dmesg
==System Environment==
--------------------------
Regression: not sure
Non-working platforms: SKL
==kernel==
--------------------------
drm-intel-nightly/5ea91de4ff45adb60031853d64314c3405378fbd
commit 5ea91de4ff45adb60031853d64314c3405378fbd
Author: Daniel Vetter <<a href="mailto:daniel.vetter@ffwll.ch">daniel.vetter@ffwll.ch</a>>
Date: Tue Apr 14 20:00:06 2015 +0200
drm-intel-nightly: 2015y-04m-14d-17h-59m-22s UTC integration manifest
==Bug detailed description==
-----------------------------
Run ./gem_reloc_vs_gpu --run-subtest forked-interruptible-thrash-inactive-hang
20 cycles on SKL, it happens on the 16th cycle.
output error:
Failed assertion: gtt_relocs
Last errno: 5, Input/output error
dmesg：
[ 4656.471553] ------------[ cut here ]------------
[ 4656.471606] WARNING: CPU: 0 PID: 8632 at
drivers/gpu/drm/i915/i915_gem.c:1999 i915_gem_object_put_pages_gtt+0x47/0x14d
[i915]()
[ 4656.471610] [drm:i915_reset_and_wakeup] resetting chip
[ 4656.471618] WARN_ON(ret != -EIO)
[ 4656.471622] Modules linked in: dm_mod snd_hda_codec_realtek ppdev
snd_hda_codec_generic pcspkr snd_hda_intel snd_hda_controller snd_hda_codec
snd_hda_core i2c_i801 snd_hwdep snd_pcm snd_timer snd soundcore joydev wmi
battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
[ 4656.471688] CPU: 0 PID: 8632 Comm: gem_reloc_vs_gp Not tainted
4.0.0_drm-intel-nightly_5ea91d_20150415+ #1272
[ 4656.471694] Hardware name: Intel Corporation Skylake Client platform/Skylake
Y LPDDR3 RVP3, BIOS SKLSE2R1.86C.B067.R00.1412310711 12/31/2014
[ 4656.471699] 0000000000000000 0000000000000009 ffffffff81795847
ffff880086623d38
[ 4656.471707] ffffffff8103bd5a 00000000000004f4 ffffffffa009e288
0000000000000001
[ 4656.471715] ffff880088384700 0000000000000000 ffffffffa010ce40
ffff880086623e18
[ 4656.471723] Call Trace:
[ 4656.471737] [<ffffffff81795847>] ? dump_stack+0x40/0x50
[ 4656.471749] [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
[ 4656.471792] [<ffffffffa009e288>] ? i915_gem_object_put_pages_gtt+0x47/0x14d
[i915]
[ 4656.471804] [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
[ 4656.471842] [<ffffffffa009dfbb>] ?
i915_gem_object_set_to_cpu_domain+0x27/0x133 [i915]
[ 4656.471917] [<ffffffffa009e288>] ? i915_gem_object_put_pages_gtt+0x47/0x14d
[i915]
[ 4656.471966] [<ffffffffa009fb2e>] ? i915_gem_object_put_pages+0x77/0xcf
[i915]
[ 4656.472029] [<ffffffffa00a2b60>] ? i915_gem_shrink+0x177/0x1dc [i915]
[ 4656.472065] [<ffffffffa008fea3>] ? i915_drop_caches_set+0x87/0xb7 [i915]
[ 4656.472085] [<ffffffff8112c632>] ? simple_attr_write+0x81/0xae
[ 4656.472098] [<ffffffff8110f29d>] ? vfs_write+0xb0/0x186
[ 4656.472106] [<ffffffff8110fc0c>] ? SyS_write+0x41/0x84
[ 4656.472115] [<ffffffff8179b0f2>] ? system_call_fastpath+0x12/0x17
[ 4656.472121] ---[ end trace fd9a6691bb0a99a2 ]---
[ 4656.472206] ------------[ cut here ]------------
[ 4656.528352] kernel BUG at drivers/gpu/drm/i915/i915_gem.c:2247!
==Reproduce steps==
----------------------------
1. run ./gem_reloc_vs_gpu --run-subtest
forked-interruptible-thrash-inactive-hang 20 cycles.</pre>
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