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<base href="https://bugs.freedesktop.org/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - intel_mmio_flip_work_func+0x35f/0x3c0 [i915_bpo]()"
href="https://bugs.freedesktop.org/show_bug.cgi?id=95077">95077</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>intel_mmio_flip_work_func+0x35f/0x3c0 [i915_bpo]()
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
<tr>
<th>Version</th>
<td>XOrg git
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>OS</th>
<td>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>hector.yuen@gmail.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>Hit this on an i7-6560U running 3.19.0-58-generic
This is a bug in the kernel that was talking about it and got closed
<a href="https://bugzilla.kernel.org/show_bug.cgi?id=99581">https://bugzilla.kernel.org/show_bug.cgi?id=99581</a>
[17541.308606] ------------[ cut here ]------------
[17541.308636] WARNING: CPU: 0 PID: 13511 at
/build/linux-lts-vivid-6tG2ln/linux-lts-vivid
-3.19.0/ubuntu/i915/intel_display.c:11004 intel_mmio_flip_work_func+0x35f/0x3c0
[i915_bpo]()
[17541.308637] WARN_ON(__i915_wait_request(mmio_flip->req,
mmio_flip->crtc->reset_counter,
false, NULL, &mmio_flip->i915->rps.mmioflips))
[17541.308638] Modules linked in: dell_wmi sparse_keymap ctr ccm nvram msr arc4
dm_crypt s
nd_hda_codec_hdmi(OE) dell_led snd_hda_codec_realtek(OE)
snd_hda_codec_generic(OE) dell_laptop dcdbas x86_pkg_temp_thermal coretemp s
nd_hda_intel(OE) snd_hda_codec(OE) snd_hda_core(OE) snd_hwdep kvm_intel
dm_multipath scsi_dh kvm iwlmvm(OE) mac80211(OE) cmac crct10d
if_pclmul crc32_pclmul ghash_clmulni_intel iwlwifi(OE) rts_cr_host(OE)
cfg80211(OE) rts_cr_core(OE) aesni_intel aes_x86_64 snd_pcm lr
w gf128mul glue_helper ablk_helper snd_seq_midi cryptd hid_multitouch
snd_seq_midi_event uvcvideo videobuf2_vmalloc videobuf2_memops
snd_rawmidi videobuf2_core v4l2_common videodev media joydev serio_raw
rfcomm(OE) bnep(OE) snd_seq snd_seq_device snd_timer snd sound
core shpchp i2c_hid i915_bpo int3403_thermal intel_ips drm_kms_helper
int3400_thermal acpi_thermal_rel drm intel_hid(OE) acpi_pad i2c
_algo_bit mac_hid parport_pc nls_iso8859_1 ppdev lp parport btrfs xor raid6_pq
dm_mirror dm_region_hash dm_log btusb(OE) btintel(OE)
bluetooth(OE) compat(OE) hid_generic usbhid hid psmouse(OE) ahci nvme libahci
wmi video
[17541.308693] CPU: 0 PID: 13511 Comm: kworker/0:1 Tainted: G W OE
3.19.0-33-gene
ric #38~14.04.1-Ubuntu
[17541.308694] Hardware name: Dell Inc. XPS 13 9350/09JHRY, BIOS 1.2.3
01/08/2016
[17541.308707] Workqueue: events intel_mmio_flip_work_func [i915_bpo]
[17541.308708] ffffffffc062c890 ffff880389bcbce8 ffffffff817af41b
0000000000000000
[17541.308710] ffff880389bcbd38 ffff880389bcbd28 ffffffff81074daa
ffff880074a91600
[17541.308711] ffff880386afc140 ffff88040b9e9180 ffff880480c13680
ffff880386afc140
[17541.308713] Call Trace:
[17541.308719] [<ffffffff817af41b>] dump_stack+0x45/0x57
[17541.308722] [<ffffffff81074daa>] warn_slowpath_common+0x8a/0xc0
[17541.308723] [<ffffffff81074e26>] warn_slowpath_fmt+0x46/0x50
[17541.308736] [<ffffffffc05c882f>] intel_mmio_flip_work_func+0x35f/0x3c0
[i915_bpo]
[17541.308738] [<ffffffff8108db8f>] process_one_work+0x14f/0x400
[17541.308739] [<ffffffff8108e328>] worker_thread+0x118/0x510
[17541.308741] [<ffffffff8108e210>] ? rescuer_thread+0x3d0/0x3d0
[17541.308743] [<ffffffff81093822>] kthread+0xd2/0xf0
[17541.308745] [<ffffffff81093750>] ? kthread_create_on_node+0x1c0/0x1c0
[17541.308747] [<ffffffff817b6d18>] ret_from_fork+0x58/0x90
[17541.308748] [<ffffffff81093750>] ? kthread_create_on_node+0x1c0/0x1c0
[17541.308749] ---[ end trace 5240514278d57b1b ]---</pre>
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