<html>
<head>
<base href="https://bugs.freedesktop.org/" />
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [BSW]igt/gem_concurrent_blit sporadically causes system hang"
href="https://bugs.freedesktop.org/show_bug.cgi?id=90035">90035</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[BSW]igt/gem_concurrent_blit sporadically causes system hang
</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>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=115075" name="attach_115075" title="dmesg">attachment 115075</a> <a href="attachment.cgi?id=115075&action=edit" title="dmesg">[details]</a></span>
dmesg
==System Environment==
--------------------------
Regression: not sure, it's random and disable in old testing
Non-working platforms: BSW
==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==
-----------------------------
It sporadically causes system hang.Fail rate: ~1/15.
for ((i=1;i<=30;i++));do ./gem_concurrent_blit --run-subtest
cpu-blt-early-read-forked ; done, it happens on the 10th cycle.
output:
IGT-Version: 1.10-g9fd6e07 (x86_64) (Linux:
4.0.0_drm-intel-nightly_5ea91d_20150415+ x86_64)
using 2x512 buffers, each 1MiB
dmesg:
[ 151.525863] BUG: unable to handle kernel paging request at 0000000073b0311a
[ 151.609694] IP: [<ffffffff8105c24a>] task_waking_fair+0x58/0x59
[ 151.680876] PGD 2fc3067 PUD 0
[ 151.717730] Oops: 0002 [#1] SMP
[ 151.756671] Modules linked in: dm_mod snd_hda_codec_hdmi
snd_hda_codec_realtek snd_hda_codec_generic iTCO_wdt iTCO_vendor_support
snd_hda_intel snd_hda_controller snd_hda_codec snd_hda_core snd_hwdep snd_pcm
pcspkr serio_raw i2c_i801 lpc_ich mfd_core snd_timer snd soundcore battery ac
acpi_cpufreq i915 button video drm_kms_helper drm
[ 152.114768] CPU: 3 PID: 4738 Comm: gem_concurrent_ Tainted: G W
4.0.0_drm-intel-nightly_5ea91d_20150415+ #1272
[ 152.248445] task: ffff880002d328f0 ti: ffff880002f7c000 task.ti:
ffff880002f7c000
[ 152.338295] RIP: 0010:[<ffffffff8105c24a>] [<ffffffff8105c24a>]
task_waking_fair+0x58/0x59
[ 152.438685] RSP: 0018:ffff880002f7fc30 EFLAGS: 00010002
[ 152.502449] RAX: 00000000084d33e5 RBX: 0000000000000000 RCX:
00000000fffdae3b
[ 152.588121] RDX: 00000000fffdad37 RSI: 00000000fffdaa53 RDI:
ffff88017a3649b0
[ 152.673791] RBP: 000000004a63de82 R08: ffffea0005dcdc00 R09:
0000000000016480
[ 152.759463] R10: 0000000000000000 R11: ffffffffa0095e70 R12:
ffff88017a365012
[ 152.845133] R13: 0000000000000003 R14: ffff88017a3649b0 R15:
0000000000000000
[ 152.930807] FS: 00007f35bb27f8c0(0000) GS:ffff88017fd80000(0000)
knlGS:0000000000000000
[ 153.027956] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 153.096930] CR2: 0000000073b0311a CR3: 0000000076652000 CR4:
00000000001006e0
[ 153.182603] Stack:
[ 153.206712] ffffffff81059148 ffff8800765b4108 0000000000000246
ffff880076492a00
[ 153.295945] ffff8801754a3060 0000000000000000 ffff880177370800
ffff8800764bc800
[ 153.385185] ffff8800765d1340 0000000000000000 ffffffff81799875
ffff880177370800
[ 153.474420] Call Trace:
[ 153.503754] [<ffffffff81059148>] ? try_to_wake_up+0x10a/0x243
[ 153.573784] [<ffffffff81799875>] ? __mutex_unlock_slowpath+0x29/0x2f
[ 153.651144] [<ffffffffa0095e7e>] ?
i915_gem_do_execbuffer.isra.13+0xd24/0xd88 [i915]
[ 153.745210] [<ffffffffa00a1345>] ? i915_gem_pwrite_ioctl+0x75a/0x7e0 [i915]
[ 153.829843] [<ffffffff81799233>] ?
__mutex_lock_interruptible_slowpath+0x21/0xfc
[ 153.919696] [<ffffffff8110948a>] ? __kmalloc+0x65/0x13d
[ 153.983490] [<ffffffffa0096e95>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
[ 154.067094] [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
[ 154.138185] [<ffffffffa0096d27>] ? i915_gem_execbuffer+0x339/0x339 [i915]
[ 154.220733] [<ffffffff8105ede9>] ? set_next_entity+0x32/0x55
[ 154.289715] [<ffffffff81060a23>] ? pick_next_task_fair+0xe5/0x3dc
[ 154.363917] [<ffffffff8111daa6>] ? do_vfs_ioctl+0x360/0x424
[ 154.431854] [<ffffffff81798592>] ? __schedule+0x589/0x7c9
[ 154.497705] [<ffffffff8104fad2>] ? task_work_run+0x84/0x96
[ 154.564598] [<ffffffff8111dbb3>] ? SyS_ioctl+0x49/0x7a
[ 154.627318] [<ffffffff8179b0f2>] ? system_call_fastpath+0x12/0x17
==Reproduce steps==
----------------------------
1. run ./gem_concurrent_blit --run-subtest cpu-blt-early-read-forked 30 cycles</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are the QA Contact for the bug.</li>
<li>You are on the CC list for the bug.</li>
<li>You are the assignee for the bug.</li>
</ul>
</body>
</html>