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<base href="https://bugs.freedesktop.org/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [HSW Bisected] System bootup cause "Call Trace""
href="https://bugs.freedesktop.org/show_bug.cgi?id=90247">90247</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[HSW Bisected] System bootup cause "Call Trace"
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</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>bin.a.xu@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=115465" name="attach_115465" title="dmesg">attachment 115465</a> <a href="attachment.cgi?id=115465&action=edit" title="dmesg">[details]</a></span>
dmesg
==System Environment==
--------------------------
Regression: Yes. Good commit: a6631bc8d60d4c3159bc3dd0897664096f9e9ccd.
Non-working platforms: Haswell
==kernel==
--------------------------
-nightly: 9a4da5ec419897b78c1d4a3949c0c049db5402c5 (fails)
drm-intel-nightly: 2015y-04m-28d-14h-41m-15s UTC integration manifest
-queued: de4de566f84b87f4d5f8265b11932088adb19896 (fails)
drm/i915: Update DRIVER_DATE to 20150423
-fixes: a04f90a33fab74789b91fc9739999012f11022d1 (works)
drm/i915/chv: Implement WaDisableShadowRegForCpd
==Bug detailed description==
-----------------------------
Since system bootup,dmesg shows "Call Trace" .
Dmesg shows
[ 4.037561] [drm:check_crtc_state [i915]] *ERROR* mismatch in
scaler_state.scaler_id (expected 0, found -1)
[ 4.037562] ------------[ cut here ]------------
[ 4.037609] WARNING: CPU: 2 PID: 885 at
drivers/gpu/drm/i915/intel_display.c:12008 check_crtc_state+0xb67/0xbd1
[i915]()
[ 4.037621] pipe state doesn't match!
[ 4.037626] Modules linked in: i915 button video drm_kms_helper drm
[ 4.037629] CPU: 2 PID: 885 Comm: kworker/2:1 Not tainted
4.0.0_drm-intel-testing-2015-04-23+ #412
[ 4.037630] Hardware name: LENOVO 20267 /Cherry 3A , BIOS
7CCN15WW 07/24/2013
[ 4.037636] Workqueue: events output_poll_execute [drm_kms_helper]
[ 4.037638] 0000000000000000 0000000000000009 ffffffff81795847
ffff88008c5b77f8
[ 4.037640] ffffffff8103bd5a ffff88008c5b77f0 ffffffffa00c907d
ffff880002d50000
[ 4.037642] ffff88008c53c000 ffff88008c605000 ffff88008c5b7880
ffff8801553dc400
[ 4.037642] Call Trace:
[ 4.037651] [<ffffffff81795847>] ? dump_stack+0x40/0x50
[ 4.037656] [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
[ 4.037704] [<ffffffffa00c907d>] ? check_crtc_state+0xb67/0xbd1 [i915]
[ 4.037707] [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
[ 4.037746] [<ffffffffa00c907d>] ? check_crtc_state+0xb67/0xbd1 [i915]
[ 4.037791] [<ffffffffa00d825e>] ? intel_modeset_check_state+0x610/0x9e9
[i915]
[ 4.037832] [<ffffffffa00d95b3>] ? intel_crtc_set_config+0x986/0xc19 [i915]
[ 4.037845] [<ffffffffa000c314>] ? drm_mode_set_config_internal+0x4e/0xd2
[drm]
[ 4.037850] [<ffffffffa0058f99>] ? restore_fbdev_mode+0xac/0xc3
[drm_kms_helper]
[ 4.037853] [<ffffffffa005a79a>] ?
drm_fb_helper_restore_fbdev_mode_unlocked+0x1e/0x54 [drm_kms_helper]
[ 4.037856] [<ffffffffa005a7fe>] ? drm_fb_helper_set_par+0x2e/0x32
[drm_kms_helper]
[ 4.037860] [<ffffffffa005a776>] ? drm_fb_helper_hotplug_event+0xa1/0xa7
[drm_kms_helper]
[ 4.037864] [<ffffffffa0051e21>] ? output_poll_execute+0x11d/0x158
[drm_kms_helper]
[ 4.037868] [<ffffffff8104ca7f>] ? process_one_work+0x1b2/0x31d
[ 4.037871] [<ffffffff8104d278>] ? worker_thread+0x24d/0x339
[ 4.037874] [<ffffffff8104d02b>] ? cancel_delayed_work_sync+0xa/0xa
[ 4.037876] [<ffffffff81050b25>] ? kthread+0xce/0xd6
[ 4.037879] [<ffffffff81050a57>] ? kthread_create_on_node+0x162/0x162
[ 4.037881] [<ffffffff8179b048>] ? ret_from_fork+0x58/0x90
[ 4.037883] [<ffffffff81050a57>] ? kthread_create_on_node+0x162/0x162
[ 4.037884] ---[ end trace a6300e481db7a40b ]---
==Bisect results==
----------------------------
Bisect shows: a1b2278e4dfcd2dbea85e319ebf73a6b7b2f180b is the first bad
commit.
commit a1b2278e4dfcd2dbea85e319ebf73a6b7b2f180b
Author: Chandra Konduru <<a href="mailto:chandra.konduru@intel.com">chandra.konduru@intel.com</a>>
AuthorDate: Tue Apr 7 15:28:45 2015 -0700
Commit: Daniel Vetter <<a href="mailto:daniel.vetter@ffwll.ch">daniel.vetter@ffwll.ch</a>>
CommitDate: Mon Apr 13 11:44:17 2015 +0200
drm/i915: skylake panel fitting using shared scalers
Enabling skylake panel fitting feature using shared scalers
v2:
-added force detach parameter for pfit disable purpose (me)
-read crtc scaler state from hw state (Daniel)
-replaced both skylake_pfit_enable and disable with skylake_pfit_update
(me)
-added scaler id check to intel_pipe_config_compare (Daniel)
v3:
-updated function header to kerneldoc format (Matt)
-dropped need_scaling checks (Matt)
v4:
-move clearing of scaler id from commit path to check path (Matt)
-updated colorkey checks based on recent updates (me)</pre>
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