Bug#759786: Bug is in intel drm

[J Baptist]

I get similar errors and a complete system lockup at random times. This bug is not dependent on attaching an external display.

Feb 10 03:26:11 orvos kernel: [153451.951419] ------------[ cut here ]------------
Feb 10 03:26:11 orvos kernel: [153451.951482] WARNING: CPU: 3 PID: 2703 at /build/linux-CMiYW9/linux-3.16.7-ckt2/drivers/gpu/drm/i915/intel_display.c:3324 intel_crtc_wait_for_pending_flips+0x165/0x170 [i915]()
Feb 10 03:26:11 orvos kernel: [153451.951537] Modules linked in: kvm vfio_pci vfio_iommu_type1 vfio tun xt_CHECKSUM iptable_mangle ipt_MASQUERADE iptable_nat nf_nat_ipv4 bridge stp llc pci_stub vboxpci(O) vboxnetadp(O) vboxnetflt(O) binfmt_misc cfg80211 vboxdrv(O) nfsd auth_rpcgss oid_registry nfs_acl nfs lockd fscache sunrpc ip6t_REJECT xt_hl ip6t_rt nf_conntrack_ipv6 nf_defrag_ipv6 ipt_REJECT xt_LOG xt_multiport xt_limit xt_tcpudp xt_addrtype nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack ip6table_filter ip6_tables nf_conntrack_netbios_ns nf_conntrack_broadcast nf_nat_ftp nf_nat nf_conntrack_ftp nf_conntrack iptable_filter ip_tables x_tables 8192cu(O) snd_hda_codec_hdmi joydev uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common ecb videodev media btusb bluetooth 6lowpan_iphc nls_utf8 nls_cp437 vfat fat x86_pkg_temp_thermal intel_powerclamp intel_rapl coretemp iTCO_wdt iTCO_vendor_support crc32_pclmul ghash_clmulni_intel snd_hda_codec_realtek aesni_intel efi_pstore snd_hda_codec_generic aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd psmouse evdev serio_raw pcspkr rtsx_pci_ms efivars i915 memstick lpc_ich snd_hda_intel i2c_i801 thinkpad_acpi snd_hda_controller nvram snd_hda_codec rfkill tpm_tis snd_hwdep drm_kms_helper wmi tpm ac snd_pcm snd_timer drm battery snd mei_me soundcore i2c_algo_bit mei video shpchp i2c_core button processor fuse ecryptfs parport_pc ppdev lp parport autofs4 ext4 crc16 mbcache jbd2 dm_mod sg sd_mod crc_t10dif crct10dif_generic rtsx_pci_sdmmc mmc_core crct10dif_pclmul crct10dif_common crc32c_intel ahci libahci ehci_pci xhci_hcd ehci_hcd libata e1000e ptp scsi_mod pps_core rtsx_pci mfd_core usbcore thermal usb_common thermal_sys [last unloaded: kvm]
Feb 10 03:26:11 orvos kernel: [153451.951613] CPU: 3 PID: 2703 Comm: Xorg Tainted: G           O  3.16.0-4-amd64 #1 Debian 3.16.7-ckt2-1
Feb 10 03:26:11 orvos kernel: [153451.951615] Hardware name: LENOVO 20AQCTO1WW/20AQCTO1WW, BIOS GJET79WW (2.29 ) 09/03/2014
Feb 10 03:26:11 orvos kernel: [153451.951620]  0000000000000009 ffffffff81507263 0000000000000000 ffffffff81065847
Feb 10 03:26:11 orvos kernel: [153451.951623]  0000000000000000 ffff8800d6987000 ffff8800d6958210 ffff8800d5c05800
Feb 10 03:26:11 orvos kernel: [153451.951626]  ffff8800d5c05800 ffffffffa049be85 0000000000000000 ffff8800d6412aa0
Feb 10 03:26:11 orvos kernel: [153451.951627] Call Trace:
Feb 10 03:26:11 orvos kernel: [153451.951639]  [<ffffffff81507263>] ? dump_stack+0x41/0x51
Feb 10 03:26:11 orvos kernel: [153451.951647]  [<ffffffff81065847>] ? warn_slowpath_common+0x77/0x90
Feb 10 03:26:11 orvos kernel: [153451.951675]  [<ffffffffa049be85>] ? intel_crtc_wait_for_pending_flips+0x165/0x170 [i915]
Feb 10 03:26:11 orvos kernel: [153451.951682]  [<ffffffff810a5940>] ? prepare_to_wait_event+0xf0/0xf0
Feb 10 03:26:11 orvos kernel: [153451.951709]  [<ffffffffa04a53af>] ? intel_crtc_set_config+0x92f/0xd50 [i915]
Feb 10 03:26:11 orvos kernel: [153451.951733]  [<ffffffffa0391d11>] ? drm_mode_set_config_internal+0x61/0xe0 [drm]
Feb 10 03:26:11 orvos kernel: [153451.951747]  [<ffffffffa03c5a6b>] ? restore_fbdev_mode+0xab/0xd0 [drm_kms_helper]
Feb 10 03:26:11 orvos kernel: [153451.951761]  [<ffffffffa03c5aae>] ? drm_fb_helper_restore_fbdev_mode_unlocked+0x1e/0x30 [drm_kms_helper]
Feb 10 03:26:11 orvos kernel: [153451.951773]  [<ffffffffa03c7622>] ? drm_fb_helper_set_par+0x22/0x60 [drm_kms_helper]
Feb 10 03:26:11 orvos kernel: [153451.951778]  [<ffffffff8130ca4e>] ? fb_set_var+0x15e/0x3b0
Feb 10 03:26:11 orvos kernel: [153451.951795]  [<ffffffffa01e6176>] ? jbd2_journal_stop+0x1b6/0x390 [jbd2]
Feb 10 03:26:11 orvos kernel: [153451.951803]  [<ffffffff8130413b>] ? fbcon_blank+0x1cb/0x2b0
Feb 10 03:26:11 orvos kernel: [153451.951809]  [<ffffffff81377321>] ? do_unblank_screen+0xb1/0x1d0
Feb 10 03:26:11 orvos kernel: [153451.951814]  [<ffffffff8136d9f3>] ? complete_change_console+0x53/0xe0
Feb 10 03:26:11 orvos kernel: [153451.951819]  [<ffffffff8136e9c9>] ? vt_ioctl+0xf49/0x10d0
Feb 10 03:26:11 orvos kernel: [153451.951836]  [<ffffffffa0386774>] ? drm_ioctl+0x84/0x5b0 [drm]
Feb 10 03:26:11 orvos kernel: [153451.951860]  [<ffffffffa038cc60>] ? drm_setmaster_ioctl+0xd0/0xd0 [drm]
Feb 10 03:26:11 orvos kernel: [153451.951866]  [<ffffffff81362cac>] ? tty_ioctl+0x26c/0xb40
Feb 10 03:26:11 orvos kernel: [153451.951872]  [<ffffffff811e043c>] ? fsnotify+0x23c/0x300
Feb 10 03:26:11 orvos kernel: [153451.951877]  [<ffffffff811b7d2f>] ? do_vfs_ioctl+0x2cf/0x4b0
Feb 10 03:26:11 orvos kernel: [153451.951881]  [<ffffffff811a7e0d>] ? __sb_end_write+0x2d/0x70
Feb 10 03:26:11 orvos kernel: [153451.951888]  [<ffffffff811a5b92>] ? vfs_write+0x172/0x1f0
Feb 10 03:26:11 orvos kernel: [153451.951891]  [<ffffffff811b7f91>] ? SyS_ioctl+0x81/0xa0
Feb 10 03:26:11 orvos kernel: [153451.951898]  [<ffffffff8150f368>] ? page_fault+0x28/0x30
Feb 10 03:26:11 orvos kernel: [153451.951902]  [<ffffffff8150d32d>] ? system_call_fast_compare_end+0x10/0x15
Feb 10 03:26:11 orvos kernel: [153451.951904] ---[ end trace edd798c2ddc9c581 ]---

 		 	   		  
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