I have tons of these in my logs (and a lockup eventually on hotplugging, probably related). Also probably struck when using MST. Most frequently it is: Mar 12 14:13:00 xps13 kernel: [28179.594692] ------------[ cut here ]------------ Mar 12 14:13:00 xps13 kernel: [28179.594721] WARNING: CPU: 2 PID: 1329 at drivers/gpu/drm/drm_modeset_lock.c:278 drm_warn_on_modeset_not_all_locked+0xb0/0xc0 [drm]() Mar 12 14:13:00 xps13 kernel: [28179.594722] Modules linked in: btrfs xor raid6_pq ufs qnx4 hfsplus hfs minix ntfs msdos jfs xfs libcrc32c dell_laptop dcdbas dell_wmi sparse_keymap uvcvideo dm_multipath scsi_dh wl(POE) x86_pkg_temp_thermal videobuf2_vmalloc intel_powerclamp videobuf2_memops videobuf2_core coretemp v4l2_common kvm_intel snd_hda_codec_hdmi kvm cfg80211 btusb bnep snd_hda_intel rfcomm bluetooth crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel videodev snd_hda_controller aes_x86_64 snd_hda_codec hid_multitouch joydev lrw rtsx_pci_ms gf128mul glue_helper mei_me ablk_helper memstick serio_raw cryptd mei snd_hwdep snd_pcm shpchp snd_seq_midi lpc_ich snd_seq_midi_event snd_rawmidi snd_seq binfmt_misc dw_dmac snd_seq_device snd_timer snd i2c_hid dw_dmac_core nls_iso8859_1 8250_dw i2c_designware_platform spi_pxa2xx_platform i2c_designware_core parport_pc soundcore intel_smartconnect ppdev acpi_pad mac_hid lp parport dm_mirror dm_region_hash dm_log usbhid hid i915 i2c_algo_bit drm_kms_helper drm rtsx_pci_sdmmc psmouse ahci libahci rtsx_pci wmi sdhci_acpi video sdhci Mar 12 14:13:00 xps13 kernel: [28179.594767] CPU: 2 PID: 1329 Comm: Xorg Tainted: P W OE 4.0.0-rc3+ #2 Mar 12 14:13:00 xps13 kernel: [28179.594769] Hardware name: Dell Inc. XPS 13 9343/0310JH, BIOS A00 11/04/2014 Mar 12 14:13:00 xps13 kernel: [28179.594770] ffffffffa00cb700 ffff8802039dfcb8 ffffffff81789304 0000000000000000 Mar 12 14:13:00 xps13 kernel: [28179.594773] 0000000000000000 ffff8802039dfcf8 ffffffff8107254a ffff8802039dfd08 Mar 12 14:13:00 xps13 kernel: [28179.594775] ffff8801fa113368 ffff8801fa113378 ffff8801fa113000 00000000fffffffe Mar 12 14:13:00 xps13 kernel: [28179.594777] Call Trace: Mar 12 14:13:00 xps13 kernel: [28179.594784] [<ffffffff81789304>] dump_stack+0x45/0x57 Mar 12 14:13:00 xps13 kernel: [28179.594788] [<ffffffff8107254a>] warn_slowpath_common+0x8a/0xc0 Mar 12 14:13:00 xps13 kernel: [28179.594791] [<ffffffff8107263a>] warn_slowpath_null+0x1a/0x20 Mar 12 14:13:00 xps13 kernel: [28179.594803] [<ffffffffa00b3fe0>] drm_warn_on_modeset_not_all_locked+0xb0/0xc0 [drm] Mar 12 14:13:00 xps13 kernel: [28179.594815] [<ffffffffa00b4606>] __drm_modeset_lock_all+0xb6/0x120 [drm] Mar 12 14:13:00 xps13 kernel: [28179.594826] [<ffffffffa00b4680>] drm_modeset_lock_all+0x10/0x30 [drm] Mar 12 14:13:00 xps13 kernel: [28179.594838] [<ffffffffa00a9af3>] drm_mode_getblob_ioctl+0x33/0xa0 [drm] Mar 12 14:13:00 xps13 kernel: [28179.594847] [<ffffffffa0099ab4>] drm_ioctl+0x1a4/0x630 [drm] Mar 12 14:13:00 xps13 kernel: [28179.594852] [<ffffffff811fc7f8>] do_vfs_ioctl+0x2f8/0x510 Mar 12 14:13:00 xps13 kernel: [28179.594855] [<ffffffff811eb465>] ? __sb_end_write+0x35/0x70 Mar 12 14:13:00 xps13 kernel: [28179.594858] [<ffffffff811e8f12>] ? vfs_write+0x172/0x1f0 Mar 12 14:13:00 xps13 kernel: [28179.594860] [<ffffffff811fca91>] SyS_ioctl+0x81/0xa0 Mar 12 14:13:00 xps13 kernel: [28179.594863] [<ffffffff81790e8d>] system_call_fastpath+0x16/0x1b Mar 12 14:13:00 xps13 kernel: [28179.594865] ---[ end trace bdccadb1bbef5c4a ]--- Mar 12 14:13:00 xps13 kernel: [28179.595608] ------------[ cut here ]------------ Mar 12 14:13:00 xps13 kernel: [28179.604920] ------------[ cut here ]------------ Mar 12 14:13:00 xps13 kernel: [28179.604990] WARNING: CPU: 0 PID: 1329 at drivers/gpu/drm/drm_modeset_lock.c:278 drm_warn_on_modeset_not_all_locked+0xb0/0xc0 [drm]() Mar 12 14:13:00 xps13 kernel: [28179.604992] Modules linked in: btrfs xor raid6_pq ufs qnx4 hfsplus hfs minix ntfs msdos jfs xfs libcrc32c dell_laptop dcdbas dell_wmi sparse_keymap uvcvideo dm_multipath scsi_dh wl(POE) x86_pkg_temp_thermal videobuf2_vmalloc intel_powerclamp videobuf2_memops videobuf2_core coretemp v4l2_common kvm_intel snd_hda_codec_hdmi kvm cfg80211 btusb bnep snd_hda_intel rfcomm bluetooth crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel videodev snd_hda_controller aes_x86_64 snd_hda_codec hid_multitouch joydev lrw rtsx_pci_ms gf128mul glue_helper mei_me ablk_helper memstick serio_raw cryptd mei snd_hwdep snd_pcm shpchp snd_seq_midi lpc_ich snd_seq_midi_event snd_rawmidi snd_seq binfmt_misc dw_dmac snd_seq_device snd_timer snd i2c_hid dw_dmac_core nls_iso8859_1 8250_dw i2c_designware_platform spi_pxa2xx_platform i2c_designware_core parport_pc soundcore intel_smartconnect ppdev acpi_pad mac_hid lp parport dm_mirror dm_region_hash dm_log usbhid hid i915 i2c_algo_bit drm_kms_helper drm rtsx_pci_sdmmc psmouse ahci libahci rtsx_pci wmi sdhci_acpi video sdhci Mar 12 14:13:00 xps13 kernel: [28179.605041] CPU: 0 PID: 1329 Comm: Xorg Tainted: P W OE 4.0.0-rc3+ #2 Mar 12 14:13:00 xps13 kernel: [28179.605043] Hardware name: Dell Inc. XPS 13 9343/0310JH, BIOS A00 11/04/2014 Mar 12 14:13:00 xps13 kernel: [28179.605046] ffffffffa00cb700 ffff8802039dfc58 ffffffff81789304 0000000000000000 Mar 12 14:13:00 xps13 kernel: [28179.605049] 0000000000000000 ffff8802039dfc98 ffffffff8107254a ffff8802039dfca8 Mar 12 14:13:00 xps13 kernel: [28179.605050] ffff8801fa113368 ffff8801fa113378 ffff8801fa113000 ffff8801fa113000 Mar 12 14:13:00 xps13 kernel: [28179.605053] Call Trace: Mar 12 14:13:00 xps13 kernel: [28179.605067] [<ffffffff81789304>] dump_stack+0x45/0x57 Mar 12 14:13:00 xps13 kernel: [28179.605073] [<ffffffff8107254a>] warn_slowpath_common+0x8a/0xc0 Mar 12 14:13:00 xps13 kernel: [28179.605075] [<ffffffff8107263a>] warn_slowpath_null+0x1a/0x20 Mar 12 14:13:00 xps13 kernel: [28179.605096] [<ffffffffa00b3fe0>] drm_warn_on_modeset_not_all_locked+0xb0/0xc0 [drm] Mar 12 14:13:00 xps13 kernel: [28179.605110] [<ffffffffa00b4606>] __drm_modeset_lock_all+0xb6/0x120 [drm] Mar 12 14:13:00 xps13 kernel: [28179.605122] [<ffffffffa00b4680>] drm_modeset_lock_all+0x10/0x30 [drm] Mar 12 14:13:00 xps13 kernel: [28179.605134] [<ffffffffa00a8c5d>] drm_mode_setcrtc+0x4d/0x630 [drm] Mar 12 14:13:00 xps13 kernel: [28179.605176] [<ffffffffa015fb95>] ? i915_gem_execbuffer2+0x175/0x2c0 [i915] Mar 12 14:13:00 xps13 kernel: [28179.605181] [<ffffffff811caddd>] ? kfree+0xfd/0x130 Mar 12 14:13:00 xps13 kernel: [28179.605193] [<ffffffffa0099ab4>] drm_ioctl+0x1a4/0x630 [drm] Mar 12 14:13:00 xps13 kernel: [28179.605202] [<ffffffff811fc7f8>] do_vfs_ioctl+0x2f8/0x510 Mar 12 14:13:00 xps13 kernel: [28179.605207] [<ffffffff8107f242>] ? __set_task_blocked+0x32/0x70 Mar 12 14:13:00 xps13 kernel: [28179.605209] [<ffffffff811fca91>] SyS_ioctl+0x81/0xa0 Mar 12 14:13:00 xps13 kernel: [28179.605215] [<ffffffff81790e8d>] system_call_fastpath+0x16/0x1b Mar 12 14:13:00 xps13 kernel: [28179.605217] ---[ end trace bdccadb1bbef5c4d ]--- Mar 12 14:13:00 xps13 kernel: [28179.637409] ------------[ cut here ]------------ Mar 12 14:13:00 xps13 kernel: [28179.942580] WARNING: CPU: 2 PID: 1329 at drivers/gpu/drm/drm_modeset_lock.c:278 drm_warn_on_modeset_not_all_locked+0xb0/0xc0 [drm]() Mar 12 14:13:00 xps13 kernel: [28179.942582] Modules linked in: btrfs xor raid6_pq ufs qnx4 hfsplus hfs minix ntfs msdos jfs xfs libcrc32c dell_laptop dcdbas dell_wmi sparse_keymap uvcvideo dm_multipath scsi_dh wl(POE) x86_pkg_temp_thermal videobuf2_vmalloc intel_powerclamp videobuf2_memops videobuf2_core coretemp v4l2_common kvm_intel snd_hda_codec_hdmi kvm cfg80211 btusb bnep snd_hda_intel rfcomm bluetooth crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel videodev snd_hda_controller aes_x86_64 snd_hda_codec hid_multitouch joydev lrw rtsx_pci_ms gf128mul glue_helper mei_me ablk_helper memstick serio_raw cryptd mei snd_hwdep snd_pcm shpchp snd_seq_midi lpc_ich snd_seq_midi_event snd_rawmidi snd_seq binfmt_misc dw_dmac snd_seq_device snd_timer snd i2c_hid dw_dmac_core nls_iso8859_1 8250_dw i2c_designware_platform spi_pxa2xx_platform i2c_designware_core parport_pc soundcore intel_smartconnect ppdev acpi_pad mac_hid lp parport dm_mirror dm_region_hash dm_log usbhid hid i915 i2c_algo_bit drm_kms_helper drm rtsx_pci_sdmmc psmouse ahci libahci rtsx_pci wmi sdhci_acpi video sdhci Mar 12 14:13:00 xps13 kernel: [28179.942646] CPU: 2 PID: 1329 Comm: Xorg Tainted: P W OE 4.0.0-rc3+ #2 Mar 12 14:13:00 xps13 kernel: [28179.942648] Hardware name: Dell Inc. XPS 13 9343/0310JH, BIOS A00 11/04/2014 Mar 12 14:13:00 xps13 kernel: [28179.942651] ffffffffa00cb700 ffff8802039dfc98 ffffffff81789304 0000000000000000 Mar 12 14:13:00 xps13 kernel: [28179.942653] 0000000000000000 ffff8802039dfcd8 ffffffff8107254a ffff8802039dfce8 Mar 12 14:13:00 xps13 kernel: [28179.942655] ffff8801fa113368 ffff8801fa113378 ffff8801fa113000 00000000fffffffe Mar 12 14:13:00 xps13 kernel: [28179.942658] Call Trace: Mar 12 14:13:00 xps13 kernel: [28179.942687] [<ffffffff81789304>] dump_stack+0x45/0x57 Mar 12 14:13:00 xps13 kernel: [28179.942697] [<ffffffff8107254a>] warn_slowpath_common+0x8a/0xc0 Mar 12 14:13:00 xps13 kernel: [28179.942702] [<ffffffff8107263a>] warn_slowpath_null+0x1a/0x20 Mar 12 14:13:00 xps13 kernel: [28179.942754] [<ffffffffa00b3fe0>] drm_warn_on_modeset_not_all_locked+0xb0/0xc0 [drm] Mar 12 14:13:00 xps13 kernel: [28179.942801] [<ffffffffa00b4606>] __drm_modeset_lock_all+0xb6/0x120 [drm] Mar 12 14:13:00 xps13 kernel: [28179.942844] [<ffffffffa00b4680>] drm_modeset_lock_all+0x10/0x30 [drm] Mar 12 14:13:00 xps13 kernel: [28179.942889] [<ffffffffa00aa0ca>] drm_mode_gamma_set_ioctl+0x3a/0x130 [drm] Mar 12 14:13:00 xps13 kernel: [28179.942900] [<ffffffff8166c3b4>] ? ___sys_recvmsg+0xe4/0x200 Mar 12 14:13:00 xps13 kernel: [28179.942954] [<ffffffffa0099ab4>] drm_ioctl+0x1a4/0x630 [drm] Mar 12 14:13:00 xps13 kernel: [28179.942964] [<ffffffff810dd3a8>] ? __hrtimer_start_range_ns+0x288/0x3c0 Mar 12 14:13:00 xps13 kernel: [28179.942971] [<ffffffff811fc7f8>] do_vfs_ioctl+0x2f8/0x510 Mar 12 14:13:00 xps13 kernel: [28179.942976] [<ffffffff8166ce15>] ? __sys_recvmsg+0x65/0x80 Mar 12 14:13:16 xps13 kernel: [28195.017670] WARNING: CPU: 0 PID: 1329 at drivers/gpu/drm/drm_modeset_lock.c:278 drm_warn_on_modeset_not_all_locked+0xb0/0xc0 [drm]() Mar 12 14:13:16 xps13 kernel: [28195.017687] Modules linked in: btrfs xor raid6_pq ufs qnx4 hfsplus hfs minix ntfs msdos jfs xfs libcrc32c dell_laptop dcdbas dell_wmi sparse_keymap uvcvideo dm_multipath scsi_dh wl(POE) x86_pkg_temp_thermal videobuf2_vmalloc intel_powerclamp videobuf2_memops videobuf2_core coretemp v4l2_common kvm_intel snd_hda_codec_hdmi kvm cfg80211 btusb bnep snd_hda_intel rfcomm bluetooth crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel videodev snd_hda_controller aes_x86_64 snd_hda_codec hid_multitouch joydev lrw rtsx_pci_ms gf128mul glue_helper mei_me ablk_helper memstick serio_raw cryptd mei snd_hwdep snd_pcm shpchp snd_seq_midi lpc_ich snd_seq_midi_event snd_rawmidi snd_seq binfmt_misc dw_dmac snd_seq_device snd_timer snd i2c_hid dw_dmac_core nls_iso8859_1 8250_dw i2c_designware_platform spi_pxa2xx_platform i2c_designware_core parport_pc soundcore intel_smartconnect ppdev acpi_pad mac_hid lp parport dm_mirror dm_region_hash dm_log usbhid hid i915 i2c_algo_bit drm_kms_helper drm rtsx_pci_sdmmc psmouse ahci libahci rtsx_pci wmi sdhci_acpi video sdhci Mar 12 14:13:16 xps13 kernel: [28195.017745] CPU: 0 PID: 1329 Comm: Xorg Tainted: P W OE 4.0.0-rc3+ #2 Mar 12 14:13:16 xps13 kernel: [28195.017746] Hardware name: Dell Inc. XPS 13 9343/0310JH, BIOS A00 11/04/2014 Mar 12 14:13:16 xps13 kernel: [28195.017747] ffffffffa00cb700 ffff8802039dfc58 ffffffff81789304 0000000000000000 Mar 12 14:13:16 xps13 kernel: [28195.017749] 0000000000000000 ffff8802039dfc98 ffffffff8107254a ffff8802039dfca8 Mar 12 14:13:16 xps13 kernel: [28195.017750] ffff8801fa113368 ffff8801fa113378 ffff8801fa113000 ffff880029ab0800 Mar 12 14:13:16 xps13 kernel: [28195.017752] Call Trace: Mar 12 14:13:16 xps13 kernel: [28195.017770] [<ffffffff81789304>] dump_stack+0x45/0x57 Mar 12 14:13:16 xps13 kernel: [28195.017773] [<ffffffff8107254a>] warn_slowpath_common+0x8a/0xc0 Mar 12 14:13:16 xps13 kernel: [28195.017775] [<ffffffff8107263a>] warn_slowpath_null+0x1a/0x20 Mar 12 14:13:16 xps13 kernel: [28195.017784] [<ffffffffa00b3fe0>] drm_warn_on_modeset_not_all_locked+0xb0/0xc0 [drm] Mar 12 14:13:16 xps13 kernel: [28195.017806] [<ffffffffa00b4606>] __drm_modeset_lock_all+0xb6/0x120 [drm] Mar 12 14:13:16 xps13 kernel: [28195.017826] [<ffffffffa00b4680>] drm_modeset_lock_all+0x10/0x30 [drm] Mar 12 14:13:16 xps13 kernel: [28195.017848] [<ffffffffa00a8af3>] drm_mode_setplane+0x113/0x230 [drm] Mar 12 14:13:16 xps13 kernel: [28195.017850] [<ffffffff8107e8f6>] ? dequeue_signal+0x36/0x180 Mar 12 14:13:16 xps13 kernel: [28195.017857] [<ffffffffa0099ab4>] drm_ioctl+0x1a4/0x630 [drm] Mar 12 14:13:16 xps13 kernel: [28195.017873] [<ffffffff8101465e>] ? do_signal+0x19e/0xaa0 Mar 12 14:13:16 xps13 kernel: [28195.017890] [<ffffffff8102181b>] ? __restore_xstate_sig+0x8b/0x680 Mar 12 14:13:16 xps13 kernel: [28195.017893] [<ffffffff811fc7f8>] do_vfs_ioctl+0x2f8/0x510 Mar 12 14:13:16 xps13 kernel: [28195.017895] [<ffffffff8107f242>] ? __set_task_blocked+0x32/0x70 Mar 12 14:13:16 xps13 kernel: [28195.017897] [<ffffffff811fca91>] SyS_ioctl+0x81/0xa0 Mar 12 14:13:16 xps13 kernel: [28195.017899] [<ffffffff81790e8d>] system_call_fastpath+0x16/0x1b Mar 12 14:13:16 xps13 kernel: [28195.017900] ---[ end trace bdccadb1bbef5c54 ]--- Mar 12 14:13:16 xps13 kernel: [28195.034292] ------------[ cut here ]------------ Mar 12 14:13:16 xps13 kernel: [28195.034826] ------------[ cut here ]------------ Mar 12 14:13:16 xps13 kernel: [28195.034833] WARNING: CPU: 0 PID: 1329 at drivers/gpu/drm/drm_modeset_lock.c:278 drm_warn_on_modeset_not_all_locked+0xb0/0xc0 [drm]() Mar 12 14:13:16 xps13 kernel: [28195.034845] Modules linked in: btrfs xor raid6_pq ufs qnx4 hfsplus hfs minix ntfs msdos jfs xfs libcrc32c dell_laptop dcdbas dell_wmi sparse_keymap uvcvideo dm_multipath scsi_dh wl(POE) x86_pkg_temp_thermal videobuf2_vmalloc intel_powerclamp videobuf2_memops videobuf2_core coretemp v4l2_common kvm_intel snd_hda_codec_hdmi kvm cfg80211 btusb bnep snd_hda_intel rfcomm bluetooth crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel videodev snd_hda_controller aes_x86_64 snd_hda_codec hid_multitouch joydev lrw rtsx_pci_ms gf128mul glue_helper mei_me ablk_helper memstick serio_raw cryptd mei snd_hwdep snd_pcm shpchp snd_seq_midi lpc_ich snd_seq_midi_event snd_rawmidi snd_seq binfmt_misc dw_dmac snd_seq_device snd_timer snd i2c_hid dw_dmac_core nls_iso8859_1 8250_dw i2c_designware_platform spi_pxa2xx_platform i2c_designware_core parport_pc soundcore intel_smartconnect ppdev acpi_pad mac_hid lp parport dm_mirror dm_region_hash dm_log usbhid hid i915 i2c_algo_bit drm_kms_helper drm rtsx_pci_sdmmc psmouse ahci libahci rtsx_pci wmi sdhci_acpi video sdhci Mar 12 14:13:16 xps13 kernel: [28195.034850] CPU: 0 PID: 1329 Comm: Xorg Tainted: P W OE 4.0.0-rc3+ #2 Mar 12 14:13:16 xps13 kernel: [28195.034851] Hardware name: Dell Inc. XPS 13 9343/0310JH, BIOS A00 11/04/2014 Mar 12 14:13:16 xps13 kernel: [28195.034852] ffffffffa00cb700 ffff8802039df9e8 ffffffff81789304 0000000008660866 Mar 12 14:13:16 xps13 kernel: [28195.034853] 0000000000000000 ffff8802039dfa28 ffffffff8107254a ffff8802039dfa38 Mar 12 14:13:16 xps13 kernel: [28195.034853] ffff8801fa113368 ffff8801fa113378 ffff8801fa113000 ffff8801fa116860 Mar 12 14:13:16 xps13 kernel: [28195.034854] Call Trace: Mar 12 14:13:16 xps13 kernel: [28195.034856] [<ffffffff81789304>] dump_stack+0x45/0x57 Mar 12 14:13:16 xps13 kernel: [28195.034857] [<ffffffff8107254a>] warn_slowpath_common+0x8a/0xc0 Mar 12 14:13:16 xps13 kernel: [28195.034859] [<ffffffff8107263a>] warn_slowpath_null+0x1a/0x20 Mar 12 14:13:16 xps13 kernel: [28195.034865] [<ffffffffa00b3fe0>] drm_warn_on_modeset_not_all_locked+0xb0/0xc0 [drm] Mar 12 14:13:16 xps13 kernel: [28195.034872] [<ffffffffa00b4606>] __drm_modeset_lock_all+0xb6/0x120 [drm] Mar 12 14:13:16 xps13 kernel: [28195.034878] [<ffffffffa00b4680>] drm_modeset_lock_all+0x10/0x30 [drm] Mar 12 14:13:16 xps13 kernel: [28195.034884] [<ffffffffa0117921>] drm_fb_helper_restore_fbdev_mode_unlocked+0x21/0x80 [drm_kms_helper] Mar 12 14:13:16 xps13 kernel: [28195.034888] [<ffffffffa01179a2>] drm_fb_helper_set_par+0x22/0x50 [drm_kms_helper] Mar 12 14:13:16 xps13 kernel: [28195.034903] [<ffffffffa01bef0a>] intel_fbdev_set_par+0x1a/0x60 [i915] Mar 12 14:13:16 xps13 kernel: [28195.034905] [<ffffffff81411ea1>] fb_set_var+0x191/0x430 Mar 12 14:13:16 xps13 kernel: [28195.034907] [<ffffffff81408cc1>] fbcon_blank+0x1d1/0x2d0 Mar 12 14:13:16 xps13 kernel: [28195.034909] [<ffffffff814a06e8>] do_unblank_screen+0xb8/0x1f0 Mar 12 14:13:16 xps13 kernel: [28195.034911] [<ffffffff81497632>] vt_ioctl+0x1102/0x1180 Mar 12 14:13:16 xps13 kernel: [28195.034913] [<ffffffff81489c3c>] tty_ioctl+0x1fc/0xc90 Mar 12 14:13:16 xps13 kernel: [28195.034914] [<ffffffff81193c51>] ? kzfree+0x31/0x40 Mar 12 14:13:16 xps13 kernel: [28195.034916] [<ffffffff811caddd>] ? kfree+0xfd/0x130 Mar 12 14:13:16 xps13 kernel: [28195.034917] [<ffffffff812000af>] ? dput+0xef/0x200 Mar 12 14:13:16 xps13 kernel: [28195.034918] [<ffffffff811fc7f8>] do_vfs_ioctl+0x2f8/0x510 Mar 12 14:13:16 xps13 kernel: [28195.034920] [<ffffffff811eaafe>] ? ____fput+0xe/0x10 Mar 12 14:13:16 xps13 kernel: [28195.034921] [<ffffffff8108f86c>] ? task_work_run+0xbc/0xf0 Mar 12 14:13:16 xps13 kernel: [28195.034923] [<ffffffff811fca91>] SyS_ioctl+0x81/0xa0 Mar 12 14:13:16 xps13 kernel: [28195.034924] [<ffffffff81790e8d>] system_call_fastpath+0x16/0x1b Mar 12 14:13:16 xps13 kernel: [28195.034924] ---[ end trace bdccadb1bbef5c5a ]--- Mar 12 14:13:16 xps13 kernel: [28195.034925] ------------[ cut here ]------------ Tons more from fbcon. Mar 12 14:13:00 xps13 kernel: [28179.942980] [<ffffffff811fca91>] SyS_ioctl+0x81/0xa0 Mar 12 14:13:00 xps13 kernel: [28179.942986] [<ffffffff81790e8d>] system_call_fastpath+0x16/0x1b Mar 12 14:13:00 xps13 kernel: [28179.942990] ---[ end trace bdccadb1bbef5c4f ]--- Mar 12 14:13:00 xps13 kernel: [28179.943493] ------------[ cut here ]------------
Exact same problem here with a T540p (including the occasional lockup on hotplugging)! [41671.509376] ------------[ cut here ]------------ [41671.509417] WARNING: CPU: 0 PID: 1208 at /build/buildd/linux-3.19.0/drivers/gpu/drm/drm_modeset_lock.c:278 drm_warn_on_modeset_not_all_locked+0xad/0xd0 [drm]() [41671.509419] Modules linked in: isofs nls_iso8859_1 uas usb_storage md4 nls_utf8 cifs fscache ftdi_sio usbserial xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT nf_reject_ipv4 xt_tcpudp bridge stp llc ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter ip_tables x_tables pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) ctr ccm binfmt_misc bnep bbswitch(OE) arc4 uvcvideo cdc_acm videobuf2_vmalloc cdc_mbim videobuf2_memops cdc_wdm videobuf2_core cdc_ncm v4l2_common iwlmvm usbnet videodev mii mac80211 media hid_logitech_hidpp intel_rapl iosf_mbi x86_pkg_temp_thermal intel_powerclamp coretemp btusb kvm_intel bluetooth kvm iwlwifi snd_hda_codec_realtek joydev [41671.509446] serio_raw snd_hda_codec_generic snd_hda_codec_hdmi cfg80211 rtsx_pci_ms thinkpad_acpi snd_hda_intel lpc_ich nvram memstick snd_hda_controller snd_seq_midi snd_hda_codec snd_seq_midi_event snd_hwdep snd_rawmidi mei_me snd_pcm mei snd_seq ie31200_edac edac_core snd_seq_device shpchp snd_timer wmi snd soundcore mac_hid parport_pc ppdev sunrpc lp parport autofs4 dm_crypt hid_logitech_dj hid_generic usbhid hid rtsx_pci_sdmmc crct10dif_pclmul i915 crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul i2c_algo_bit glue_helper ablk_helper drm_kms_helper cryptd psmouse e1000e drm ahci ptp libahci rtsx_pci pps_core video [last unloaded: nvidia] [41671.509470] CPU: 0 PID: 1208 Comm: Xorg Tainted: P W OE 3.19.0-16-generic #16-Ubuntu [41671.509471] Hardware name: LENOVO 20BE0087GE/20BE0087GE, BIOS GMET70WW (2.18 ) 03/05/2015 [41671.509473] ffffffffc03886e0 ffff88042975fc98 ffffffff817c2235 0000000000000007 [41671.509475] 0000000000000000 ffff88042975fcd8 ffffffff8107595a ffff88042975fce8 [41671.509477] ffff8804268e8b80 ffff8804268e8b90 ffff8804268e8800 ffff8804268e8800 [41671.509479] Call Trace: [41671.509486] [<ffffffff817c2235>] dump_stack+0x45/0x57 [41671.509490] [<ffffffff8107595a>] warn_slowpath_common+0x8a/0xc0 [41671.509492] [<ffffffff81075a4a>] warn_slowpath_null+0x1a/0x20 [41671.509504] [<ffffffffc0370f3d>] drm_warn_on_modeset_not_all_locked+0xad/0xd0 [drm] [41671.509516] [<ffffffffc03715ee>] __drm_modeset_lock_all+0xee/0x120 [drm] [41671.509527] [<ffffffffc0371630>] drm_modeset_lock_all+0x10/0x40 [drm] [41671.509539] [<ffffffffc0366cd3>] drm_mode_getblob_ioctl+0x33/0xa0 [drm] [41671.509548] [<ffffffffc0356a6f>] drm_ioctl+0x1df/0x680 [drm] [41671.509553] [<ffffffff81207b70>] do_vfs_ioctl+0x2e0/0x4e0 [41671.509556] [<ffffffff810860b8>] ? restore_altstack+0x18/0x30 [41671.509557] [<ffffffff81207df1>] SyS_ioctl+0x81/0xa0 [41671.509560] [<ffffffff817c934d>] system_call_fastpath+0x16/0x1b [41671.509562] ---[ end trace 60b9093a10c142a4 ]--- [41671.556537] ------------[ cut here ]------------ [41671.556580] WARNING: CPU: 2 PID: 1208 at /build/buildd/linux-3.19.0/drivers/gpu/drm/drm_modeset_lock.c:278 drm_warn_on_modeset_not_all_locked+0xad/0xd0 [drm]() [41671.556582] Modules linked in: isofs nls_iso8859_1 uas usb_storage md4 nls_utf8 cifs fscache ftdi_sio usbserial xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT nf_reject_ipv4 xt_tcpudp bridge stp llc ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter ip_tables x_tables pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) ctr ccm binfmt_misc bnep bbswitch(OE) arc4 uvcvideo cdc_acm videobuf2_vmalloc cdc_mbim videobuf2_memops cdc_wdm videobuf2_core cdc_ncm v4l2_common iwlmvm usbnet videodev mii mac80211 media hid_logitech_hidpp intel_rapl iosf_mbi x86_pkg_temp_thermal intel_powerclamp coretemp btusb kvm_intel bluetooth kvm iwlwifi snd_hda_codec_realtek joydev [41671.556621] serio_raw snd_hda_codec_generic snd_hda_codec_hdmi cfg80211 rtsx_pci_ms thinkpad_acpi snd_hda_intel lpc_ich nvram memstick snd_hda_controller snd_seq_midi snd_hda_codec snd_seq_midi_event snd_hwdep snd_rawmidi mei_me snd_pcm mei snd_seq ie31200_edac edac_core snd_seq_device shpchp snd_timer wmi snd soundcore mac_hid parport_pc ppdev sunrpc lp parport autofs4 dm_crypt hid_logitech_dj hid_generic usbhid hid rtsx_pci_sdmmc crct10dif_pclmul i915 crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul i2c_algo_bit glue_helper ablk_helper drm_kms_helper cryptd psmouse e1000e drm ahci ptp libahci rtsx_pci pps_core video [last unloaded: nvidia] [41671.556658] CPU: 2 PID: 1208 Comm: Xorg Tainted: P W OE 3.19.0-16-generic #16-Ubuntu [41671.556660] Hardware name: LENOVO 20BE0087GE/20BE0087GE, BIOS GMET70WW (2.18 ) 03/05/2015 [41671.556661] ffffffffc03886e0 ffff88042975fc98 ffffffff817c2235 0000000000000007 [41671.556664] 0000000000000000 ffff88042975fcd8 ffffffff8107595a ffff88042975fce8 [41671.556667] ffff8804268e8b80 ffff8804268e8b90 ffff8804268e8800 ffff8804268e8800 [41671.556671] Call Trace: [41671.556679] [<ffffffff817c2235>] dump_stack+0x45/0x57 [41671.556683] [<ffffffff8107595a>] warn_slowpath_common+0x8a/0xc0 [41671.556686] [<ffffffff81075a4a>] warn_slowpath_null+0x1a/0x20 [41671.556700] [<ffffffffc0370f3d>] drm_warn_on_modeset_not_all_locked+0xad/0xd0 [drm] [41671.556714] [<ffffffffc03715ee>] __drm_modeset_lock_all+0xee/0x120 [drm] [41671.556727] [<ffffffffc0371630>] drm_modeset_lock_all+0x10/0x40 [drm] [41671.556742] [<ffffffffc0366cd3>] drm_mode_getblob_ioctl+0x33/0xa0 [drm] [41671.556753] [<ffffffffc0356a6f>] drm_ioctl+0x1df/0x680 [drm] [41671.556759] [<ffffffff81207b70>] do_vfs_ioctl+0x2e0/0x4e0 [41671.556762] [<ffffffff810860b8>] ? restore_altstack+0x18/0x30 [41671.556765] [<ffffffff81207df1>] SyS_ioctl+0x81/0xa0 [41671.556769] [<ffffffff817c934d>] system_call_fastpath+0x16/0x1b [41671.556771] ---[ end trace 60b9093a10c142a5 ]--- [41671.603372] ------------[ cut here ]------------ [41671.603397] WARNING: CPU: 2 PID: 1208 at /build/buildd/linux-3.19.0/drivers/gpu/drm/drm_modeset_lock.c:278 drm_warn_on_modeset_not_all_locked+0xad/0xd0 [drm]() [41671.603399] Modules linked in: isofs nls_iso8859_1 uas usb_storage md4 nls_utf8 cifs fscache ftdi_sio usbserial xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT nf_reject_ipv4 xt_tcpudp bridge stp llc ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter ip_tables x_tables pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) ctr ccm binfmt_misc bnep bbswitch(OE) arc4 uvcvideo cdc_acm videobuf2_vmalloc cdc_mbim videobuf2_memops cdc_wdm videobuf2_core cdc_ncm v4l2_common iwlmvm usbnet videodev mii mac80211 media hid_logitech_hidpp intel_rapl iosf_mbi x86_pkg_temp_thermal intel_powerclamp coretemp btusb kvm_intel bluetooth kvm iwlwifi snd_hda_codec_realtek joydev [41671.603437] serio_raw snd_hda_codec_generic snd_hda_codec_hdmi cfg80211 rtsx_pci_ms thinkpad_acpi snd_hda_intel lpc_ich nvram memstick snd_hda_controller snd_seq_midi snd_hda_codec snd_seq_midi_event snd_hwdep snd_rawmidi mei_me snd_pcm mei snd_seq ie31200_edac edac_core snd_seq_device shpchp snd_timer wmi snd soundcore mac_hid parport_pc ppdev sunrpc lp parport autofs4 dm_crypt hid_logitech_dj hid_generic usbhid hid rtsx_pci_sdmmc crct10dif_pclmul i915 crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul i2c_algo_bit glue_helper ablk_helper drm_kms_helper cryptd psmouse e1000e drm ahci ptp libahci rtsx_pci pps_core video [last unloaded: nvidia] [41671.603471] CPU: 2 PID: 1208 Comm: Xorg Tainted: P W OE 3.19.0-16-generic #16-Ubuntu [41671.603473] Hardware name: LENOVO 20BE0087GE/20BE0087GE, BIOS GMET70WW (2.18 ) 03/05/2015 [41671.603475] ffffffffc03886e0 ffff88042975fc98 ffffffff817c2235 0000000000000007 [41671.603478] 0000000000000000 ffff88042975fcd8 ffffffff8107595a ffff88042975fce8 [41671.603481] ffff8804268e8b80 ffff8804268e8b90 ffff8804268e8800 ffff8804268e8800 [41671.603484] Call Trace: [41671.603490] [<ffffffff817c2235>] dump_stack+0x45/0x57 [41671.603493] [<ffffffff8107595a>] warn_slowpath_common+0x8a/0xc0 [41671.603496] [<ffffffff81075a4a>] warn_slowpath_null+0x1a/0x20 [41671.603510] [<ffffffffc0370f3d>] drm_warn_on_modeset_not_all_locked+0xad/0xd0 [drm] [41671.603524] [<ffffffffc03715ee>] __drm_modeset_lock_all+0xee/0x120 [drm] [41671.603537] [<ffffffffc0371630>] drm_modeset_lock_all+0x10/0x40 [drm] [41671.603551] [<ffffffffc0366cd3>] drm_mode_getblob_ioctl+0x33/0xa0 [drm] [41671.603562] [<ffffffffc0356a6f>] drm_ioctl+0x1df/0x680 [drm] [41671.603567] [<ffffffff81207b70>] do_vfs_ioctl+0x2e0/0x4e0 [41671.603570] [<ffffffff810860b8>] ? restore_altstack+0x18/0x30 [41671.603573] [<ffffffff81207df1>] SyS_ioctl+0x81/0xa0 [41671.603577] [<ffffffff817c934d>] system_call_fastpath+0x16/0x1b [41671.603579] ---[ end trace 60b9093a10c142a6 ]---
Have we seen these recently?
Is this still occurs?
Timeout - assuming resolved+fixed. Please mark REOPENED if problems still exists with the present kernel (preferable from drm-tip).
Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.