linux-kernel - WARNING: at drivers/gpu/drm/i915/intel

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Date:	Thu, 1 Jan 2015 17:22:15 +0300
From:	Andrey Skvortsov <andrej.skvortzov@...il.com>
To:	linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
	intel-gfx@...ts.freedesktop.org, David Airlie <airlied@...ux.ie>,
	Jani Nikula <jani.nikula@...ux.intel.com>,
	Daniel Vetter <daniel.vetter@...el.com>
Subject: WARNING: at drivers/gpu/drm/i915/intel_display.c:11375 [i915] in
 3.19-rc2

Hi,

this warning does not exist in 3.19-rc1, but it happens every boot in
3.19-rc2. If you need any other information or data, I would be glad
to help to debug it. 

[   12.848428] ------------[ cut here ]------------
[   12.848479] WARNING: CPU: 1 PID: 328 at drivers/gpu/drm/i915/intel_display.c:11375 intel_crtc_set_config+0x3de/0xb36 [i915]()
[   12.848482] WARN_ON(!set->fb && (set->num_connectors != 0))
[   12.848484] Modules linked in: i915(E) drm_kms_helper(E) drm(E) snd_hda_intel(E) snd_hda_controller(E) i2c_algo_bit(E) snd_hda_codec(E) i2c_core(E) xhci_pci(E) xhci_hcd(E) ehci_pci(E) ehci_hcd(E) usbcore(E) snd_hwdep(E) snd_pcm_oss(E) snd_mixer_oss(E) snd_pcm(E) snd_seq_midi(E) snd_rawmidi(E) snd_seq_midi_event(E) snd_seq(E) snd_timer(E) snd_seq_device(E) snd(E) video(E) battery(E) ppdev(E) parport_pc(E) usb_common(E) serio_raw(E) lpc_ich(E) evdev(E) mfd_core(E) soundcore(E) button(E) acpi_cpufreq(E) processor(E) coretemp(E) lp(E) parport(E) ext3(E) jbd(E) mbcache(E) sd_mod(E) ata_generic(E) btrfs(E) ata_piix(E) pata_via(E) libata(E) raid6_pq(E) thermal(E) scsi_mod(E) fan(E) thermal_sys(E) r8169(E) mii(E) xor(E) zlib_deflate(E) crc32c_generic(E) libcrc32c(E)
[   12.848531] CPU: 1 PID: 328 Comm: plymouthd Tainted: G            E  3.19.0-rc2-noiommu- #122
[   12.848532] Hardware name: System manufacturer System Product Name/P8H67-M PRO, BIOS 3904 04/27/2013
[   12.848533]  0000000000000000 ffffffffa06b3002 ffffffff813c01df ffff8800378afcb8
[   12.848535]  ffffffff8103f24b 0000000000000000 ffffffffa06685d8 ffff880000110880
[   12.848537]  ffff8800c83c2d00 ffff8800c8ccb160 ffff8800376c1000 ffff88011a74e000
[   12.848539] Call Trace:
[   12.848544]  [<ffffffff813c01df>] ? dump_stack+0x4a/0x74
[   12.848548]  [<ffffffff8103f24b>] ? warn_slowpath_common+0x9e/0xb7
[   12.848566]  [<ffffffffa06685d8>] ? intel_crtc_set_config+0x3de/0xb36 [i915]
[   12.848568]  [<ffffffff8103f30f>] ? warn_slowpath_fmt+0x4a/0x4f
[   12.848584]  [<ffffffffa06685d8>] ? intel_crtc_set_config+0x3de/0xb36 [i915]
[   12.848586]  [<ffffffff813c228f>] ? __ww_mutex_lock+0x1c/0x91
[   12.848598]  [<ffffffffa0592985>] ? drm_mode_set_config_internal+0x53/0xd7 [drm]
[   12.848604]  [<ffffffffa05f6f15>] ? restore_fbdev_mode+0xae/0xca [drm_kms_helper]
[   12.848608]  [<ffffffffa05f8393>] ? drm_fb_helper_restore_fbdev_mode_unlocked+0x24/0x5a [drm_kms_helper]
[   12.848627]  [<ffffffffa06747ea>] ? intel_fbdev_restore_mode+0x1b/0x41 [i915]
[   12.848632]  [<ffffffffa0589249>] ? drm_lastclose+0x3c/0x104 [drm]
[   12.848637]  [<ffffffffa0589732>] ? drm_release+0x421/0x457 [drm]
[   12.848639]  [<ffffffff8112cd65>] ? __fput+0xdb/0x177
[   12.848642]  [<ffffffff81054977>] ? task_work_run+0x8e/0xa3
[   12.848645]  [<ffffffff81002814>] ? do_notify_resume+0x64/0x7a
[   12.848647]  [<ffffffff813c4267>] ? int_signal+0x12/0x17
[   12.848649] ---[ end trace da6972fb56a05968 ]---

-- 
Best regards,
Andrey Skvortsov

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