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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 GT3]Some subcases of igt/drv_suspend causes system hang sporadically"
href="https://bugs.freedesktop.org/show_bug.cgi?id=78652">78652</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 GT3]Some subcases of igt/drv_suspend causes system hang sporadically
</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=98964" name="attach_98964" title="dmesg">attachment 98964</a> <a href="attachment.cgi?id=98964&action=edit" title="dmesg">[details]</a></span>
dmesg
==System Environment==
--------------------------
Regression: No.
It's first time to run the test on BDW GT3
Non-working platforms: BDW GT3
==kernel==
--------------------------
-nightly: 18a7661946082f5a3b353e50d1ced5d89f864024 (fails)
-queued: ca26115df8a2ed25b2c0ed1b7c9557c7779d1556 (fails)
Author: Ville Syrjälä <<a href="mailto:ville.syrjala@linux.intel.com">ville.syrjala@linux.intel.com</a>>
Date: Thu May 8 22:19:42 2014 +0300
x86/gpu: Sprinkle const, __init and __initconst to stolen memory quirks
gen8_stolen_size() is missing __init, so add it.
Also all the intel_stolen_funcs structures can be marked
__initconst.
intel_stolen_ids[] can also be made const if we replace the
__initdata with __initconst.
Cc: Ingo Molnar <<a href="mailto:mingo@kernel.org">mingo@kernel.org</a>>
Cc: H. Peter Anvin <<a href="mailto:hpa@zytor.com">hpa@zytor.com</a>>
Signed-off-by: Ville Syrjälä <<a href="mailto:ville.syrjala@linux.intel.com">ville.syrjala@linux.intel.com</a>>
Signed-off-by: Daniel Vetter <<a href="mailto:daniel.vetter@ffwll.ch">daniel.vetter@ffwll.ch</a>>
-fixes: 05adaf1f101f25f40f12c29403e6488f0e45f6b6 (fails)
Author: Jani Nikula <<a href="mailto:jani.nikula@intel.com">jani.nikula@intel.com</a>>
Date: Fri May 9 14:52:34 2014 +0300
drm/i915/vlv: reset VLV media force wake request register
Media force wake get hangs the machine when the system is booted without
displays attached. The assumption is that (at least some versions of)
the firmware has skipped some initialization in that case.
Empirical evidence suggests we need to reset the media force wake
request register in addition to the render one to avoid hangs.
Bugzilla: <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [BYT] Media forcewake timeout with no displays connected"
href="show_bug.cgi?id=75895">https://bugs.freedesktop.org/show_bug.cgi?id=75895</a>
Reported-by: Imre Deak <<a href="mailto:imre.deak@intel.com">imre.deak@intel.com</a>>
Reported-by: Darren Hart <<a href="mailto:dvhart@linux.intel.com">dvhart@linux.intel.com</a>>
Tested-by: Darren Hart <<a href="mailto:dvhart@linux.intel.com">dvhart@linux.intel.com</a>>
Reviewed-by: Mika Kuoppala <<a href="mailto:mika.kuoppala@intel.com">mika.kuoppala@intel.com</a>>
Cc: <a href="mailto:stable@vger.kernel.org">stable@vger.kernel.org</a>
Signed-off-by: Jani Nikula <<a href="mailto:jani.nikula@intel.com">jani.nikula@intel.com</a>>
==Bug detailed description==
-----------------------------
Some subcases of igt/drv_suspend causes system hang sporadically, the hang rate
was about 1 out of 5.
Dmesg shows:
[systemd-[ 158.631171] PM: early resume of devices complete after 0.480 msecs
fsck[3850]: /dev[ 158.633311] sd 1:0:0:0: [sda] Starting disk
/sda5: recoverin[ 158.635570] ------------[ cut here ]------------
g journal [ 158.635579] WARNING: CPU: 1 PID: 4328 at
drivers/pnp/pnpacpi/core.c:97 pnpacpi_set_resources+0x84/0x10b()
OK ] Starte[ 158.635606] Modules linked in: ip6table_filter ip6_tables ipv6
iptable_filter ip_tables ebtable_nat ebtables x_tables dm_mod
snd_hda_codec_realtek snd_hda_codec_generic snd_hda_codec_hdmi ppdev iTCO_wdt
iTCO_vendor_support pcspkr i2c_i801 lpc_ich mfd_core snd_hda_intel
snd_hda_controller 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
d File System Ch[ 158.635611] CPU: 1 PID: 4328 Comm: rtcwake Not tainted
3.15.0-rc3_drm-intel-next-queued_ca2611_20140513+ #2578
eck on /dev/disk[ 158.635615] 0000000000000000 0000000000000009
ffffffff817233c0 0000000000000000
/by-uuid/0a7e090[ 158.635617] ffffffff8103517a ffffea0002ab1800
ffffffff81351a3d ffff880149ac5000
c-d2b9-498e-bc0d[ 158.635620] ffff880149ac5000 ffff880149ac5000
ffff88014a853488 0000000000000000
[ 158.635620] Call Trace:
[systemd-fsc[ 158.635628] [<ffffffff817233c0>] ? dump_stack+0x41/0x51
k[3850]: /dev/sd[ 158.635633] [<ffffffff8103517a>] ?
warn_slowpath_common+0x73/0x8b
a5: clean, 67180[ 158.635636] [<ffffffff81351a3d>] ?
pnpacpi_set_resources+0x84/0x10b
6/11083776 files[ 158.635640] [<ffffffff81351a3d>] ?
pnpacpi_set_resources+0x84/0x10b
, 33495911/44329[ 158.635643] [<ffffffff8134e4d0>] ? pnp_bus_suspend+0xd/0xd
728 blocks [ 158.635647] [<ffffffff8134fd89>] ? pnp_start_dev+0x5f/0x95
OK ] Activ[ 158.635653] [<ffffffff8133f864>] ?
acpi_evaluate_object+0x257/0x268
ated swap /dev/d[ 158.635656] [<ffffffff8134e52e>] ? pnp_bus_resume+0x5e/0x90
isk/by-uuid/1a1b[ 158.635662] [<ffffffff813896c1>] ?
dpm_run_callback.isra.8+0x24/0x52
79a3-6d33-48d2-a[ 158.635666] [<ffffffff81389cb0>] ?
device_resume+0x10c/0x14e
27e-1b5805d88291[ 158.635669] [<ffffffff8138aae3>] ? dpm_resume+0xc8/0x1d6
.
[ O[ 158.635673] [<ffffffff8138ad75>] ? dpm_resume_end+0x8/0x10
K ] Started[ 158.635679] [<ffffffff81062839>] ?
suspend_devices_and_enter+0x267/0x2af
File System Che[ 158.635683] [<ffffffff81062988>] ? pm_suspend+0x107/0x1bb
ck on /dev/disk/[ 158.635687] [<ffffffff81061aea>] ? state_store+0x9f/0xbe
by-uuid/d79f918f[ 158.635693] [<ffffffff811376b1>] ?
kernfs_fop_write+0xca/0x110
-693d-4480-91cf-[ 158.635698] [<ffffffff810e0b64>] ? vfs_write+0xba/0x176
6840792221db.
[ 158.635702] [<ffffffff810e0f1c>] ? SyS_write+0x41/0x84
Mountin[ 158.635707] [<ffffffff8172dba2>] ?
system_call_fastpath+0x16/0x1b
g /home...
[ 158.635708] ---[ end trace 29072e4048251a91 ]---
Output:
./drv_suspend --run-subtest sysfs-reader
IGT-Version: 1.6-gd848a36 (x86_64) (Linux:
3.15.0-rc3_drm-intel-next-queued_ca2611_20140513+ x86_64)
rtcwake: wakeup from "mem" using /dev/rtc0 at Mon Jan 22 23:07:17 2001
==Reproduce steps==
----------------------------
1. ./drv_suspend --run-subtest sysfs-reader</pre>
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