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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 - [SKL] WARN_ON(ret < 0) drivers/gpu/drm/i915/intel_display.c:13696 intel_prepare_plane_fb"
href="https://bugs.freedesktop.org/show_bug.cgi?id=93258">93258</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[SKL] WARN_ON(ret < 0) drivers/gpu/drm/i915/intel_display.c:13696 intel_prepare_plane_fb
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
<tr>
<th>Version</th>
<td>XOrg git
</td>
</tr>
<tr>
<th>Hardware</th>
<td>x86-64 (AMD64)
</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>joe.yasi@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>I've seen a couple of these warnings in the kernel log with the new fence
patches: 3c28ff22f6e20cc946cb5a2b77d14862999f7ba0.
System Environment:
Motherboard: Asus Z170-DELUXE
CPU: Intel i7-6700K
BIOS: 1302
Kernel: drm-intel-nightly from 2015-12-03
The display is a 4k monitor connected on DP1.
I can trigger the warning by putting the monitor in power suspend:
xset dpms force suspend
PID 17293 is X.org.
[75381.483794] ------------[ cut here ]------------
[75381.483835] WARNING: CPU: 0 PID: 17293 at
drivers/gpu/drm/i915/intel_display.c:13696 intel_prepare_plane_fb+0x258/0x2b0
[i915]()
[75381.483839] WARN_ON(ret < 0)
[75381.483841] Modules linked in:
[75381.483844] hfsplus msdos jfs xfs fuse nfsv3 nfs fscache rfcomm
ip6table_filter ip6_tables iptable_filter ip_tables x_tables tun pci_stub
vboxpci(O) vboxnetadp(O) vboxnetflt(O) binfmt_misc bnep vboxdrv(O)
snd_hda_codec_hdmi vfat fat snd_hda_codec_realtek snd_hda_codec_generic mxm_wmi
snd_usb_audio snd_usbmidi_lib snd_pcm_oss snd_mixer_oss snd_hda_intel btusb
snd_hda_codec uvcvideo btrtl snd_hwdep btbcm videobuf2_vmalloc snd_hda_core
videobuf2_v4l2 btintel snd_seq_oss videobuf2_core videobuf2_memops v4l2_common
videodev wl(PO) intel_rapl bluetooth media snd_pcm input_leds snd_seq_midi
iosf_mbi x86_pkg_temp_thermal intel_powerclamp snd_rawmidi crct10dif_pclmul
crc32_pclmul snd_seq_midi_event crc32c_intel snd_seq aesni_intel snd_seq_device
aes_x86_64 efi_pstore lrw snd_timer glue_helper ablk_helper
[75381.483929] cryptd snd soundcore efivars cfg80211 rfkill sg battery
acpi_als wmi kfifo_buf industrialio intel_lpss_acpi intel_lpss mfd_core tpm_tis
tpm acpi_pad processor nfsd auth_rpcgss oid_registry nfs_acl lockd grace sunrpc
coretemp loop efivarfs ipv6 hid_generic usbhid uas usb_storage igb hwmon e1000e
dca ptp bcache psmouse i915 pps_core intel_gtt i2c_algo_bit xhci_pci
drm_kms_helper syscopyarea sysfillrect xhci_hcd sysimgblt fb_sys_fops sr_mod
drm cdrom usbcore usb_common i2c_core fan thermal video button
[75381.483996] CPU: 0 PID: 17293 Comm: Xorg Tainted: P W O
4.4.0-rc3+git20151203-customskl-drmnightly #1
[75381.484000] Hardware name: System manufacturer System Product
Name/Z170-DELUXE, BIOS 1302 11/09/2015
[75381.484003] ffffffffc02783a8 ffffffff8132a58e ffff88044d243bb0
ffffffff81049153
[75381.484033] ffff88045deb0240 ffff88044d243c00 ffff88045c8bc800
ffff88045deb0240
[75381.484039] ffff8801a27bf180 ffffffff810491c7 ffffffffc028634e
ffff880100000020
[75381.484045] Call Trace:
[75381.484054] [<ffffffff8132a58e>] ? dump_stack+0x47/0x69
[75381.484062] [<ffffffff81049153>] ? warn_slowpath_common+0x73/0xa0
[75381.484085] [<ffffffff810491c7>] ? warn_slowpath_fmt+0x47/0x50
[75381.484119] [<ffffffffc021f1f8>] ? intel_prepare_plane_fb+0x258/0x2b0
[i915]
[75381.484136] [<ffffffffc017264b>] ?
drm_atomic_helper_prepare_planes+0x4b/0xc0 [drm_kms_helper]
[75381.484168] [<ffffffffc0216c04>] ? intel_atomic_commit+0x224/0x1690 [i915]
[75381.484195] [<ffffffffc00adcf0>] ? drm_atomic_check_only+0x190/0x580 [drm]
[75381.484203] [<ffffffff810f3ddd>] ? kmemdup+0x2d/0x40
[75381.484213] [<ffffffffc0173289>] ?
__drm_atomic_helper_crtc_duplicate_state+0x29/0x40 [drm_kms_helper]
[75381.484222] [<ffffffffc0173e63>] ?
drm_atomic_helper_connector_dpms+0xe3/0x190 [drm_kms_helper]
[75381.484237] [<ffffffffc00a3b21>] ?
drm_mode_obj_set_property_ioctl+0x231/0x240 [drm]
[75381.484249] [<ffffffffc00a3b59>] ?
drm_mode_connector_property_set_ioctl+0x29/0x30 [drm]
[75381.484262] [<ffffffffc0095b9c>] ? drm_ioctl+0x12c/0x4b0 [drm]
[75381.484276] [<ffffffffc00a3b30>] ?
drm_mode_obj_set_property_ioctl+0x240/0x240 [drm]
[75381.484283] [<ffffffff81331ee4>] ? timerqueue_add+0x54/0xa0
[75381.484289] [<ffffffff81099476>] ? hrtimer_start_range_ns+0x1a6/0x300
[75381.484296] [<ffffffff81149183>] ? do_vfs_ioctl+0x293/0x470
[75381.484303] [<ffffffff814e4368>] ? __sys_recvmsg+0x58/0x70
[75381.484328] [<ffffffff8115234b>] ? __fget+0x6b/0xb0
[75381.484350] [<ffffffff811493cf>] ? SyS_ioctl+0x6f/0x80
[75381.484366] [<ffffffff815a069b>] ? entry_SYSCALL_64_fastpath+0x16/0x6e
[75381.484375] ---[ end trace 31684214f36947a8 ]---
[75404.355720] [drm:gen8_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun</pre>
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