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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>medium
</td>
</tr>
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [SNB/IVB/HSW/BSW]WARNING: CPU: 6 PID: 4328 at drivers/gpu/drm/i915/intel_uncore.c:460 gen6_gt_force_wake_put+0xde/0x134 [i915]() while running igt/drv_suspend/forcewake"
href="https://bugs.freedesktop.org/show_bug.cgi?id=78059">78059</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>[SNB/IVB/HSW/BSW]WARNING: CPU: 6 PID: 4328 at drivers/gpu/drm/i915/intel_uncore.c:460 gen6_gt_force_wake_put+0xde/0x134 [i915]() while running igt/drv_suspend/forcewake
</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=98155" name="attach_98155" title="dmesg">attachment 98155</a> <a href="attachment.cgi?id=98155&action=edit" title="dmesg">[details]</a></span>
dmesg
System Environment:
--------------------------
Platform: IVB SNB HSW
kernel: (drm-intel-nightly)11ddb598492d1f97f894495eea398febb41a9eb0
Bug detailed description:
----------------------------
WARNING: CPU: 6 PID: 4328 at drivers/gpu/drm/i915/intel_uncore.c:460
gen6_gt_force_wake_put+0xde/0x134 [i915]() while running
igt/drv_suspend/forcewake on
-nightyly(11ddb598492d1f97f894495eea398febb41a9eb0)
-next-queued(b7c0d9df97c10ec5693a838df2fd53058f8e9e96) and
-fixs(7f1950fbb989e8fc5463b307e062b4529d51c862)
The CallTrace always exist
CallTrace:
[ 112.388275] WARNING: CPU: 6 PID: 4328 at
drivers/gpu/drm/i915/intel_uncore.c:460 gen6_gt_force_wake_put+0xde/0x134
[i915]()
[ 112.388902] Modules linked in: ip6table_filter ip6_tables ebtable_nat
ebtables nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT
iptable_mangle xt_tcpudp iptable_filter ip_tables x_tables bridge stp llc ipv6
dm_mod snd_hda_codec_realtek snd_hda_codec_generic snd_hda_codec_hdmi iTCO_wdt
iTCO_vendor_support dcdbas serio_raw pcspkr i2c_i801 snd_hda_intel
snd_hda_controller snd_hda_codec lpc_ich snd_hwdep shpchp mfd_core snd_pcm
snd_timer snd soundcore battery acpi_cpufreq i915 video button drm_kms_helper
drm
[ 112.390929] CPU: 6 PID: 4328 Comm: drv_suspend Not tainted
3.15.0-rc2_drm-intel-nightly_11ddb5_20140428+ #2094
[ 112.391614] Hardware name: Dell Inc. OptiPlex 9020/0DNKMN, BIOS A03
09/17/2013
[ 112.392004] 0000000000000000 0000000000000009 ffffffff81722e60
0000000000000000
[ 112.392367] ffffffff8103516a 0000000000000286 ffffffffa008edef
0000000100000002
[ 112.392720] ffff8801153e0000 0000000000000008 ffff8801153e0070
0000000000000246
[ 112.393098] Call Trace:
[ 112.393428] [<ffffffff81722e60>] ? dump_stack+0x41/0x51
[ 112.393771] [<ffffffff8103516a>] ? warn_slowpath_common+0x73/0x8b
[ 112.394123] [<ffffffffa008edef>] ? gen6_gt_force_wake_put+0xde/0x134 [i915]
[ 112.394445] [<ffffffffa008edef>] ? gen6_gt_force_wake_put+0xde/0x134 [i915]
[ 112.394774] [<ffffffffa006ed75>] ? i915_forcewake_release+0x1c/0x23 [i915]
[ 112.395094] [<ffffffff810e197e>] ? __fput+0xdb/0x1a8
[ 112.395398] [<ffffffff81049668>] ? task_work_run+0x73/0x87
[ 112.395696] [<ffffffff810024ce>] ? do_notify_resume+0x53/0x68
[ 112.396026] [<ffffffff8172d8aa>] ? int_signal+0x12/0x17
[ 112.396319] ---[ end trace 97d19685c22bbb77 ]---
[ 112.396878] [drm:intel_crtc_cursor_set] cursor off
[ 112.396880] [drm:intel_crtc_set_config] [CRTC:5] [FB:30] #connectors=1 (x y)
(0 0)
[ 112.396882] [drm:intel_set_config_compute_mode_changes] computed changes for
[CRTC:5], mode_changed=0, fb_changed=0
[ 112.396883] [drm:intel_modeset_stage_output_state] [CONNECTOR:13:VGA-1] to
[CRTC:5]
[ 112.396884] [drm:intel_crtc_cursor_set] cursor off
[ 112.396885] [drm:intel_crtc_set_config] [CRTC:8] [NOFB]
[ 112.396886] [drm:intel_set_config_compute_mode_changes] computed changes for
[CRTC:8], mode_changed=0, fb_changed=0
[ 112.396887] [drm:intel_modeset_stage_output_state] [CONNECTOR:13:VGA-1] to
[CRTC:5]
[ 112.396888] [drm:intel_crtc_cursor_set] cursor off
[ 112.396889] [drm:intel_crtc_set_config] [CRTC:11] [NOFB]
[ 112.396890] [drm:intel_set_config_compute_mode_changes] computed changes for
[CRTC:11], mode_changed=0, fb_changed=0
[ 112.396890] [drm:intel_modeset_stage_output_state] [CONNECTOR:13:VGA-1] to
[CRTC:5]
[ 112.510831] ata3: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[ 112.513234] ata3.00: configured for UDMA/100
[ 113.756348] [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off
[ 113.760375] [drm:gen6_enable_rps] Overclocking supported. Max: 1200MHz,
Overclock max: 1200MHz
output:
./drv_suspend --run-subtest forcewake
IGT-Version: 1.6-ga595a40 (x86_64) (Linux:
3.15.0-rc2_drm-intel-fixes_7f1950_20140428+ x86_64)
rtcwake: wakeup from "mem" using /dev/rtc0 at Tue Apr 29 05:09:34 2014
Subtest forcewake: SUCCESS
Reproduce steps:
----------------------------
1. ./drv_suspend --run-subtest forcewake</pre>
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