Public bug reported:
[145984.025831] WARNING: CPU: 0 PID: 3405 at
/build/buildd/linux-3.16.0/drivers/gpu/drm/i915/intel_pm.c:6001
intel_display_power_put+0xf9/0x160 [i915]()
[145984.025833] Modules linked in: snd_hda_codec_hdmi snd_hda_codec_realtek
snd_hda_intel snd_hda_controller btrfs xor raid6_pq ufs qnx4 hfsplus hfs minix
ntfs msdos jfs asix usbnet mii hidp pl2303 usbserial nfnetlink xt_recent
pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) veth xt_CHECKSUM
bridge stp llc ctr ccm aufs rfcomm bnep binfmt_misc dm_crypt ip6t_REJECT
nls_iso8859_1 xt_hl ip6t_rt nf_conntrack_ipv6 nf_defrag_ipv6 ipt_REJECT
xt_comment xt_LOG xt_limit ipt_MASQUERADE xt_REDIRECT xt_tcpudp xt_addrtype
xt_conntrack iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4
intel_rapl ip6table_mangle x86_pkg_temp_thermal intel_powerclamp arc4 coretemp
uvcvideo videobuf2_vmalloc kvm_intel videobuf2_memops videobuf2_core
v4l2_common kvm btusb bluetooth videodev iptable_mangle 6lowpan_iphc
[145984.025873] media crct10dif_pclmul ip6table_filter hid_multitouch
snd_hda_codec_generic ip6_tables crc32_pclmul nf_conntrack_netbios_ns
nf_conntrack_broadcast nf_nat_ftp nf_nat ghash_clmulni_intel nf_conntrack_ftp
nf_conntrack snd_hda_codec iptable_filter snd_hwdep ip_tables x_tables iwlmvm
snd_pcm mac80211 aesni_intel snd_seq_midi_event aes_x86_64 lrw gf128mul
glue_helper ablk_helper cryptd thinkpad_acpi snd_rawmidi nvram iwlwifi snd_seq
snd_seq_device cfg80211 snd_timer joydev rtsx_pci_ms serio_raw memstick snd
mei_me soundcore mei shpchp lpc_ich mac_hid intel_smartconnect parport_pc xfs
ppdev lp parport libcrc32c hid_generic usbhid hid rtsx_pci_sdmmc i915 e1000e
ptp psmouse i2c_algo_bit pps_core drm_kms_helper ahci drm libahci rtsx_pci wmi
video [last unloaded: snd_seq_midi]
[145984.025913] CPU: 0 PID: 3405 Comm: Xorg Tainted: G W OE
3.16.0-24-generic #32-Ubuntu
[145984.025915] Hardware name: LENOVO 20ALCTO1WW/20ALCTO1WW, BIOS GIET69WW
(2.19 ) 02/06/2014
[145984.025916] 0000000000000009 ffff88001b173af8 ffffffff8277fcbc
0000000000000000
[145984.025919] ffff88001b173b30 ffffffff8206fd8d ffffffffc029c800
0000000000000001
[145984.025922] ffff8800da208520 0000000000000000 ffff8800da200000
ffff88001b173b40
[145984.025925] Call Trace:
[145984.025932] [<ffffffff8277fcbc>] dump_stack+0x45/0x56
[145984.025936] [<ffffffff8206fd8d>] warn_slowpath_common+0x7d/0xa0
[145984.025943] [<ffffffff8206fe6a>] warn_slowpath_null+0x1a/0x20
[145984.025958] [<ffffffffc01ee209>] intel_display_power_put+0xf9/0x160 [i915]
[145984.025981] [<ffffffffc0236ff4>]
modeset_update_crtc_power_domains+0x204/0x210 [i915]
[145984.026001] [<ffffffffc023700e>] haswell_modeset_global_resources+0xe/0x10
[i915]
[145984.026020] [<ffffffffc023870a>] __intel_set_mode+0x5fa/0xab0 [i915]
[145984.026039] [<ffffffffc023baf6>] intel_set_mode+0x16/0x30 [i915]
[145984.026057] [<ffffffffc023cbba>] intel_crtc_set_config+0xa4a/0xda0 [i915]
[145984.026077] [<ffffffffc01066d1>] drm_mode_set_config_internal+0x61/0xe0
[drm]
[145984.026094] [<ffffffffc010a413>] drm_mode_setcrtc+0x283/0x580 [drm]
[145984.026106] [<ffffffffc00faa4f>] drm_ioctl+0x1df/0x680 [drm]
[145984.026113] [<ffffffff821f4bc8>] do_vfs_ioctl+0x2c8/0x4a0
[145984.026116] [<ffffffff821e31a1>] ? __sb_end_write+0x31/0x60
[145984.026120] [<ffffffff821e0d12>] ? vfs_write+0x1b2/0x1f0
[145984.026122] [<ffffffff821f4e21>] SyS_ioctl+0x81/0xa0
[145984.026125] [<ffffffff82787ced>] system_call_fastpath+0x1a/0x1f
[145984.026127] ---[ end trace d30ba54846748be9 ]---
[145984.332518] ------------[ cut here ]------------
ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: linux-signed-image-3.16.0-25-generic 3.16.0-25.33
ProcVersionSignature: Ubuntu 3.16.0-24.32-generic 3.16.4
Uname: Linux 3.16.0-24-generic x86_64
ApportVersion: 2.14.7-0ubuntu8
Architecture: amd64
CurrentDesktop: Unity
Date: Wed Nov 26 18:39:18 2014
SourcePackage: linux-signed
UpgradeStatus: Upgraded to utopic on 2014-10-24 (33 days ago)
** Affects: linux-signed (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug utopic
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https://bugs.launchpad.net/bugs/1396852
Title:
repeated stacktrace about slowpath
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