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<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 --- - [BDW Regression]igt/gem_cpu_reloc stops at 1% and Call Trace in dmesg"
href="https://bugs.freedesktop.org/show_bug.cgi?id=78283">78283</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>[BDW Regression]igt/gem_cpu_reloc stops at 1% and Call Trace in dmesg
</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=98453" name="attach_98453" title="dmesg">attachment 98453</a> <a href="attachment.cgi?id=98453&action=edit" title="dmesg">[details]</a></span>
dmesg
*System Environment:
--------------------------
Platform: BDW
kernel:
-nightly: 08ce6614d07dd1e426109672a5e323317c8d6ec7(fails)
-queued: e5c03ca362819ba8ffbe5674340b61b9cd75de8f (fails)
-fixes: 9bbfd20abe5025adbb0ac75160bd2e41158a9e83 (works)
*Bug detailed description:
-----------------------------
igt/gem_cpu_reloc stops at 1% and Call Trace in dmesg
It's a regression bug
good commit: c79057922ed6c2c6df1214e6ab4414fea1b23db2
bad commit: e5c03ca362819ba8ffbe5674340b61b9cd75de8f
We will bisect it later
Dmesg shows:
[ 27.313507] Oops: 0002 [#1] SMP
[ 27.313530] Modules linked in: dm_mod snd_hda_codec_hdmi iTCO_wdt
iTCO_vendor_support ppdev pcspkr lpc_ich mfd_core snd_hda_intel
snd_hda_controller i2c_i801 snd_hda_codec snd_hwdep snd_pcm snd_timer snd
soundcore battery parport_pc parport ac acpi_cpufreq i915 video button
drm_kms_helper drm
[ 27.313730] CPU: 0 PID: 4331 Comm: gem_cpu_reloc Not tainted
3.15.0-rc2_drm-intel-nightly_08ce66_20140504+ #2286
[ 27.313786] task: ffff88014483f620 ti: ffff880149ace000 task.ti:
ffff880149ace000
[ 27.313826] RIP: 0010:[<ffffffff812e6723>] [<ffffffff812e6723>]
iowrite32+0xe/0x28
[ 27.313872] RSP: 0018:ffff880149acfc00 EFLAGS: 00010292
[ 27.313902] RAX: 0000000011000001 RBX: ffff880145629780 RCX:
000000000001ffe0
[ 27.313940] RDX: 000000000001fff0 RSI: ffffc900110a0000 RDI:
ffffc900110a0000
[ 27.313978] RBP: 0000000000000002 R08: ffff880147558578 R09:
ffff880147558578
[ 27.314016] R10: 0000000000000000 R11: 0000000000000000 R12:
ffff880145628000
[ 27.314054] R13: 0000000000000000 R14: 0000000000022040 R15:
ffff8801492f4de0
[ 27.314093] FS: 00007fa1904238c0(0000) GS:ffff88014f400000(0000)
knlGS:0000000000000000
[ 27.314136] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 27.314167] CR2: ffffc900110a0000 CR3: 000000014833f000 CR4:
00000000003407f0
[ 27.314205] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 27.314243] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[ 27.314281] Stack:
[ 27.314294] ffffffffa008b5ea 000000000081c000 0000000000000004
ffff880145629780
[ 27.314342] ffff880145628000 ffff88000242be00 0000000000000000
ffff880145629780
[ 27.314389] ffffffffa008a9a8 ffff88000242be00 ffffffffa008d3a1
0000000000000000
[ 27.314437] Call Trace:
[ 27.314467] [<ffffffffa008b5ea>] ? gen6_signal+0x7b/0x10c [i915]
[ 27.314511] [<ffffffffa008a9a8>] ? gen6_add_request+0x13/0x88 [i915]
[ 27.314556] [<ffffffffa008d3a1>] ? intel_ring_flush_all_caches+0x1c/0x29
[i915]
[ 27.314605] [<ffffffffa007a17f>] ? __i915_add_request+0x1c4/0x1e3 [i915]
[ 27.314650] [<ffffffffa0075eb1>] ?
i915_gem_do_execbuffer.isra.16+0xff1/0x1142 [i915]
[ 27.314694] [<ffffffff812e3c23>] ? __sg_page_iter_next+0x2b/0x58
[ 27.314736] [<ffffffffa00764d0>] ? i915_gem_execbuffer2+0x177/0x1fb [i915]
[ 27.314779] [<ffffffffa0002f22>] ? drm_ioctl+0x25c/0x3ad [drm]
[ 27.314819] [<ffffffffa0076359>] ? i915_gem_execbuffer+0x357/0x357 [i915]
[ 27.314859] [<ffffffff81725de3>] ? __schedule+0x638/0x77e
[ 27.314893] [<ffffffff810ee9b3>] ? do_vfs_ioctl+0x3ec/0x435
[ 27.314926] [<ffffffff810eea45>] ? SyS_ioctl+0x49/0x78
[ 27.314958] [<ffffffff8172d622>] ? system_call_fastpath+0x16/0x1b
[ 27.314991] Code: 48 89 f7 76 05 e9 21 5c d4 ff 48 81 fe 00 00 01 00 77 09
48 c7 c6 15 9f 9b 81 eb aa c3 48 81 fe ff ff 03 00 89 f8 48 89 f7 76 03 <89> 06
c3 48 81 fe 00 00 01 00 76 05 0f b7 d6 ef c3 48 c7 c6 49
[ 27.315227] RIP [<ffffffff812e6723>] iowrite32+0xe/0x28
[ 27.315261] RSP <ffff880149acfc00>
[ 27.315281] CR2: ffffc900110a0000
[ 27.315301] ---[ end trace de5b068c0f112569 ]---
Output:
IGT-Version: 1.6-gc864279 (x86_64) (Linux:
3.15.0-rc2_drm-intel-nightly_08ce66_20140504+ x86_64)
gem_cpu_reloc: 1%
*Reproduce steps:
----------------------------
1. ./gem_cpu_reloc</pre>
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