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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 - [BSW Regression]kms_flip and kms_plane cause WARNING: CPU: 0 PID: 4116 at drivers/gpu/drm/i915/i915_gem.c:5273 i915_gem_track_fb+0x6e/0x10c [i915]()"
href="https://bugs.freedesktop.org/show_bug.cgi?id=90733">90733</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[BSW Regression]kms_flip and kms_plane cause WARNING: CPU: 0 PID: 4116 at drivers/gpu/drm/i915/i915_gem.c:5273 i915_gem_track_fb+0x6e/0x10c [i915]()
</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=116134" name="attach_116134" title="dmesg">attachment 116134</a> <a href="attachment.cgi?id=116134&action=edit" title="dmesg">[details]</a></span>
dmesg
==System Environment==
--------------------------
Regression: yes
good commit: drm-intel-nightly/6cf0fff478fa64991c2b7f2a44f2815d7a43a0b5
bad commit: drm-intel-nightly/b44f6771cba2cc90525d037445330ed766377aa9
Non-working platforms: BSW
==kernel==
--------------------------
drm-intel-nightly/b44f6771cba2cc90525d037445330ed766377aa9
commit b44f6771cba2cc90525d037445330ed766377aa9
Author: Daniel Vetter <<a href="mailto:daniel.vetter@ffwll.ch">daniel.vetter@ffwll.ch</a>>
Date: Thu May 28 13:39:29 2015 +0200
drm-intel-nightly: 2015y-05m-28d-11h-38m-51s UTC integration manifest
==Bug detailed description==
-----------------------------
All kms_flip and kms_plane cases cause WARNING: CPU: 0 PID: 4116 at
drivers/gpu/drm/i915/i915_gem.c:5273 i915_gem_track_fb+0x6e/0x10c [i915]()
Only reproduce it on BSW with the latest drm-intel-nightly kernel.
150+ cases have this error.
Test on the latest drm-intel-next-queued, drm-intel-fixes, drm-fixes, drm-next
and core-stuff branch, I am unable to reproduce this error.
run ./kms_plane --run-subtest plane-panning-top-left-pipe-A-plane-1
output:
Testing connector eDP-1 using pipe A plane 1
Subtest plane-panning-top-left-pipe-A-plane-1: SUCCESS (5.345s)
dmesg:
[ 223.165105] WARNING: CPU: 0 PID: 4259 at
drivers/gpu/drm/i915/i915_gem.c:5273 i915_gem_track_fb+0x6e/0x10c [i915]()
[ 223.165110] WARN_ON(!(old->frontbuffer_bits & frontbuffer_bits))
[ 223.165155] Modules linked in: ipv6 bnep bluetooth rfkill dm_mod iTCO_wdt
iTCO_vendor_support snd_hda_codec_realtek snd_hda_codec_generic serio_raw
pcspkr snd_hda_intel lpc_ich i2c_i801 mfd_core snd_hda_codec snd_hda_core
snd_hwdep snd_pcm snd_timer snd soundcore battery ac acpi_cpufreq i915 button
video drm_kms_helper drm
[ 223.165162] CPU: 0 PID: 4259 Comm: kms_plane Not tainted
4.1.0-rc5_drm-intel-nightly_b44f67_20150529_debug+ #592
[ 223.165173] 0000000000000009 ffff880174b337f8 ffffffff8189346a
0000000000000000
[ 223.165180] ffff880174b33848 ffff880174b33838 ffffffff81045347
0000000000000000
[ 223.165186] ffffffffa00bc274 ffff880077bc98c0 ffff880077bc98c0
0000000000000010
[ 223.165189] Call Trace:
[ 223.165199] [<ffffffff8189346a>] dump_stack+0x45/0x57
[ 223.165206] [<ffffffff81045347>] warn_slowpath_common+0xa1/0xbb
[ 223.165255] [<ffffffffa00bc274>] ? i915_gem_track_fb+0x6e/0x10c [i915]
[ 223.165259] [<ffffffff810453a7>] warn_slowpath_fmt+0x46/0x48
[ 223.165308] [<ffffffffa00bc274>] i915_gem_track_fb+0x6e/0x10c [i915]
[ 223.165371] [<ffffffffa00f91ea>] intel_prepare_plane_fb+0x133/0x151 [i915]
[ 223.165389] [<ffffffffa0069dbf>] drm_atomic_helper_prepare_planes+0x58/0xb9
[drm_kms_helper]
[ 223.165449] [<ffffffffa01088f0>] intel_atomic_commit+0x4c/0x140 [i915]
[ 223.165487] [<ffffffffa001b915>] drm_atomic_commit+0x4d/0x52 [drm]
[ 223.165502] [<ffffffffa006b430>]
drm_atomic_helper_plane_set_property+0x6c/0xab [drm_kms_helper]
[ 223.165533] [<ffffffffa000c015>] drm_mode_plane_set_obj_prop+0x2b/0x56
[drm]
[ 223.165547] [<ffffffffa006c970>] restore_fbdev_mode+0x6a/0xd5
[drm_kms_helper]
[ 223.165564] [<ffffffffa006e2bf>]
drm_fb_helper_restore_fbdev_mode_unlocked+0x27/0x5e [drm_kms_helper]
[ 223.165578] [<ffffffffa006e32c>] drm_fb_helper_set_par+0x36/0x3a
[drm_kms_helper]
[ 223.165633] [<ffffffffa01056b6>] intel_fbdev_set_par+0x1a/0x5f [i915]
[ 223.165639] [<ffffffff8140dac2>] fb_set_var+0x2aa/0x3a0
[ 223.165647] [<ffffffff810851b2>] ? __lock_acquire+0x9f0/0x1291
[ 223.165654] [<ffffffff81405c4f>] fbcon_blank+0x89/0x251
[ 223.165707] [<ffffffff81464418>] do_unblank_screen+0xfa/0x173
[ 223.165712] [<ffffffff8145c211>] vt_ioctl+0x522/0x1009
[ 223.165717] [<ffffffff810854bc>] ? __lock_acquire+0xcfa/0x1291
[ 223.165722] [<ffffffff81451cb5>] tty_ioctl+0xb2c/0xba8
[ 223.165731] [<ffffffff8116d77c>] ? __fd_install+0x28/0xa6
[ 223.165740] [<ffffffff8114aa4a>] ? kmem_cache_free+0xeb/0x18d
[ 223.165746] [<ffffffff8116046d>] ? putname+0x4a/0x4e
[ 223.165752] [<ffffffff8108453a>] ? trace_hardirqs_on_caller+0x16e/0x18a
[ 223.165759] [<ffffffff811634d7>] do_vfs_ioctl+0x3bb/0x47a
[ 223.165763] [<ffffffff8116046d>] ? putname+0x4a/0x4e
[ 223.165769] [<ffffffff8116cf86>] ? __fget_light+0x50/0x75
[ 223.165774] [<ffffffff811635e9>] SyS_ioctl+0x53/0x82
[ 223.165781] [<ffffffff8189b497>] system_call_fastpath+0x12/0x6f
[ 223.165786] ---[ end trace d2e5bd9439b99f8c ]---
==Reproduce steps==
----------------------------
1. ./kms_plane --run-subtest plane-panning-top-left-pipe-A-plane-1</pre>
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