Created attachment 140401 [details] dmesg output Hardware -- Dell Latitude E5500 lspci -nn | grep Graphics returns -- 00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07) 00:02.1 Display controller [0380]: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a43] (rev 07) Call traces -- [ 8.674057] ------------[ cut here ]------------ [ 8.674087] WARNING: CPU: 0 PID: 274 at drivers/gpu/drm/drm_modeset_lock.c:108 drm_modeset_lock+0xa6/0xc0 [drm]() [ 8.674090] Modules linked in: joydev pcspkr i915(+) i2c_algo_bit drm_kms_helper drm i2c_i801 serio_raw ptp lpc_ich soundcore pps_core mfd_core i2c_core w mi shpchp video parport_pc acpi_cpufreq parport xfs libcrc32c sd_mod sr_mod crc_t10dif cdrom crct10dif_common ahci libahci libata firewire_ohci firewire_core yenta_socket crc_itu_t [ 8.674125] CPU: 0 PID: 274 Comm: systemd-udevd Not tainted 3.16.0-0.rc1.inc1.el7.elrepo.x86_64 #1 [ 8.674127] Hardware name: Dell Inc. Latitude E5500 /0DW633, BIOS A19 06/13/2013 [ 8.674129] 0000000000000000 00000000ac883064 ffff8800d841b580 ffffffff816526d5 [ 8.674134] 0000000000000000 ffff8800d841b5b8 ffffffff81072c8d ffff8800d841b6e0 [ 8.674137] ffff88003781bb70 ffff88003781ba30 00000000ffffffff ffff8800d699a000 [ 8.674142] Call Trace: [ 8.674150] [<ffffffff816526d5>] dump_stack+0x45/0x56 [ 8.674155] [<ffffffff81072c8d>] warn_slowpath_common+0x7d/0xa0 [ 8.674158] [<ffffffff81072dba>] warn_slowpath_null+0x1a/0x20 [ 8.674176] [<ffffffffa022dd36>] drm_modeset_lock+0xa6/0xc0 [drm] [ 8.674208] [<ffffffffa02e5ef2>] intel_get_load_detect_pipe+0xd2/0x540 [i915] [ 8.674212] [<ffffffff810acee8>] ? __enqueue_entity+0x78/0x80 [ 8.674214] [<ffffffff810b30db>] ? put_prev_entity+0x5b/0x3b0 [ 8.674216] [<ffffffff810ad6c9>] ? pick_next_entity+0xa9/0x190 [ 8.674219] [<ffffffff810ade0f>] ? set_next_entity+0x5f/0x80 [ 8.674241] [<ffffffffa03112ea>] intel_tv_detect+0x12a/0x570 [i915] [ 8.674247] [<ffffffffa027cac3>] drm_helper_probe_single_connector_modes_merge_bits+0x293/0x3a0 [drm_kms_helper] [ 8.674251] [<ffffffffa027cbe3>] drm_helper_probe_single_connector_modes+0x13/0x20 [drm_kms_helper] [ 8.674255] [<ffffffffa027e9a0>] drm_fb_helper_probe_connector_modes.isra.3+0x50/0x70 [drm_kms_helper] [ 8.674260] [<ffffffffa027facd>] drm_fb_helper_initial_config+0x15d/0x4d0 [drm_kms_helper] [ 8.674280] [<ffffffffa02cb0d2>] ? gen4_write32+0x52/0xb0 [i915] [ 8.674299] [<ffffffffa02b9efd>] ? i915_hpd_irq_setup+0xcd/0xe0 [i915] [ 8.674319] [<ffffffffa02f173f>] intel_fbdev_initial_config+0x1f/0x30 [i915] [ 8.674342] [<ffffffffa03150e9>] i915_driver_load+0xeb9/0xf50 [i915] [ 8.674346] [<ffffffff812fe0b8>] ? kobject_uevent_env+0x178/0x690 [ 8.674349] [<ffffffff8140c1c7>] ? get_device+0x17/0x30 [ 8.674352] [<ffffffff81411ca5>] ? klist_class_dev_get+0x15/0x20 [ 8.674355] [<ffffffff81640a5a>] ? klist_add_tail+0x3a/0x40 [ 8.674357] [<ffffffff8140db59>] ? device_add+0x219/0x630 [ 8.674367] [<ffffffffa021d476>] ? drm_sysfs_device_add+0xd6/0x120 [drm] [ 8.674376] [<ffffffffa021995d>] drm_dev_register+0xad/0x100 [drm] [ 8.674385] [<ffffffffa021c4ef>] drm_get_pci_dev+0x8f/0x1f0 [drm] [ 8.674401] [<ffffffffa028b4bb>] i915_pci_probe+0x3b/0x60 [i915] [ 8.674404] [<ffffffff813354a5>] local_pci_probe+0x45/0xa0 [ 8.674407] [<ffffffff81336655>] ? pci_match_device+0xe5/0x110 [ 8.674409] [<ffffffff813367b9>] pci_device_probe+0xf9/0x150 [ 8.674412] [<ffffffff81410dd0>] driver_probe_device+0x90/0x3c0 [ 8.674415] [<ffffffff814111d3>] __driver_attach+0x93/0xa0 [ 8.674417] [<ffffffff81411140>] ? __device_attach+0x40/0x40 [ 8.674419] [<ffffffff8140ed13>] bus_for_each_dev+0x73/0xc0 [ 8.674422] [<ffffffff8141086e>] driver_attach+0x1e/0x20 [ 8.674424] [<ffffffff81410450>] bus_add_driver+0x180/0x250 [ 8.674427] [<ffffffff814119b4>] driver_register+0x64/0xf0 [ 8.674429] [<ffffffff81334e3c>] __pci_register_driver+0x4c/0x50 [ 8.674438] [<ffffffffa021c75a>] drm_pci_init+0x10a/0x140 [drm] [ 8.674441] [<ffffffffa036b000>] ? 0xffffffffa036afff [ 8.674456] [<ffffffffa036b089>] i915_init+0x89/0x90 [i915] [ 8.674459] [<ffffffff81002144>] do_one_initcall+0xd4/0x210 [ 8.674462] [<ffffffff811a2f82>] ? __vunmap+0xb2/0x100 [ 8.674465] [<ffffffff810f1938>] load_module+0x2018/0x2520 [ 8.674469] [<ffffffff810ed320>] ? store_uevent+0x70/0x70 [ 8.674472] [<ffffffff810edef9>] ? copy_module_from_fd.isra.47+0x129/0x180 [ 8.674474] [<ffffffff810f1ff6>] SyS_finit_module+0xa6/0xd0 [ 8.674478] [<ffffffff8165a8a9>] system_call_fastpath+0x16/0x1b [ 8.674480] ---[ end trace 40b86ef82f5d3fe8 ]--- [ 8.674484] ------------[ cut here ]------------ [ 8.674495] WARNING: CPU: 0 PID: 274 at drivers/gpu/drm/drm_modeset_lock.c:108 drm_modeset_lock+0xa6/0xc0 [drm]() [ 8.674496] Modules linked in: joydev pcspkr i915(+) i2c_algo_bit drm_kms_helper drm i2c_i801 serio_raw ptp lpc_ich soundcore pps_core mfd_core i2c_core w mi shpchp video parport_pc acpi_cpufreq parport xfs libcrc32c sd_mod sr_mod crc_t10dif cdrom crct10dif_common ahci libahci libata firewire_ohci firewire_core yenta_socket crc_itu_t [ 8.674514] CPU: 0 PID: 274 Comm: systemd-udevd Tainted: G W 3.16.0-0.rc1.inc1.el7.elrepo.x86_64 #1 [ 8.674515] Hardware name: Dell Inc. Latitude E5500 /0DW633, BIOS A19 06/13/2013 [ 8.674516] 0000000000000000 00000000ac883064 ffff8800d841b580 ffffffff816526d5 [ 8.674519] 0000000000000000 ffff8800d841b5b8 ffffffff81072c8d ffff8800d841b6e0 [ 8.674521] ffff88003781bb70 ffff8800d8391018 0000000000000001 ffff8800d699a000 [ 8.674524] Call Trace: [ 8.674526] [<ffffffff816526d5>] dump_stack+0x45/0x56 [ 8.674528] [<ffffffff81072c8d>] warn_slowpath_common+0x7d/0xa0 [ 8.674531] [<ffffffff81072dba>] warn_slowpath_null+0x1a/0x20 [ 8.674541] [<ffffffffa022dd36>] drm_modeset_lock+0xa6/0xc0 [drm] [ 8.674562] [<ffffffffa02e5f5e>] intel_get_load_detect_pipe+0x13e/0x540 [i915] [ 8.674565] [<ffffffff810acee8>] ? __enqueue_entity+0x78/0x80 [ 8.674567] [<ffffffff810b30db>] ? put_prev_entity+0x5b/0x3b0 [ 8.674569] [<ffffffff810ad6c9>] ? pick_next_entity+0xa9/0x190 [ 8.674571] [<ffffffff810ade0f>] ? set_next_entity+0x5f/0x80 [ 8.674593] [<ffffffffa03112ea>] intel_tv_detect+0x12a/0x570 [i915] [ 8.674598] [<ffffffffa027cac3>] drm_helper_probe_single_connector_modes_merge_bits+0x293/0x3a0 [drm_kms_helper] [ 8.674602] [<ffffffffa027cbe3>] drm_helper_probe_single_connector_modes+0x13/0x20 [drm_kms_helper] [ 8.674605] [<ffffffffa027e9a0>] drm_fb_helper_probe_connector_modes.isra.3+0x50/0x70 [drm_kms_helper] [ 8.674609] [<ffffffffa027facd>] drm_fb_helper_initial_config+0x15d/0x4d0 [drm_kms_helper] [ 8.674629] [<ffffffffa02cb0d2>] ? gen4_write32+0x52/0xb0 [i915] [ 8.674648] [<ffffffffa02b9efd>] ? i915_hpd_irq_setup+0xcd/0xe0 [i915] [ 8.674669] [<ffffffffa02f173f>] intel_fbdev_initial_config+0x1f/0x30 [i915] [ 8.674690] [<ffffffffa03150e9>] i915_driver_load+0xeb9/0xf50 [i915] [ 8.674694] [<ffffffff812fe0b8>] ? kobject_uevent_env+0x178/0x690 [ 8.674696] [<ffffffff8140c1c7>] ? get_device+0x17/0x30 [ 8.674698] [<ffffffff81411ca5>] ? klist_class_dev_get+0x15/0x20 [ 8.674701] [<ffffffff81640a5a>] ? klist_add_tail+0x3a/0x40 [ 8.674703] [<ffffffff8140db59>] ? device_add+0x219/0x630 [ 8.674712] [<ffffffffa021d476>] ? drm_sysfs_device_add+0xd6/0x120 [drm] [ 8.674721] [<ffffffffa021995d>] drm_dev_register+0xad/0x100 [drm] [ 8.674730] [<ffffffffa021c4ef>] drm_get_pci_dev+0x8f/0x1f0 [drm] [ 8.674745] [<ffffffffa028b4bb>] i915_pci_probe+0x3b/0x60 [i915] [ 8.674748] [<ffffffff813354a5>] local_pci_probe+0x45/0xa0 [ 8.674751] [<ffffffff81336655>] ? pci_match_device+0xe5/0x110 [ 8.674753] [<ffffffff813367b9>] pci_device_probe+0xf9/0x150 [ 8.674756] [<ffffffff81410dd0>] driver_probe_device+0x90/0x3c0 [ 8.674758] [<ffffffff814111d3>] __driver_attach+0x93/0xa0 [ 8.674761] [<ffffffff81411140>] ? __device_attach+0x40/0x40 [ 8.674763] [<ffffffff8140ed13>] bus_for_each_dev+0x73/0xc0 [ 8.674765] [<ffffffff8141086e>] driver_attach+0x1e/0x20 [ 8.674767] [<ffffffff81410450>] bus_add_driver+0x180/0x250 [ 8.674770] [<ffffffff814119b4>] driver_register+0x64/0xf0 [ 8.674772] [<ffffffff81334e3c>] __pci_register_driver+0x4c/0x50 [ 8.674781] [<ffffffffa021c75a>] drm_pci_init+0x10a/0x140 [drm] [ 8.674784] [<ffffffffa036b000>] ? 0xffffffffa036afff [ 8.674798] [<ffffffffa036b089>] i915_init+0x89/0x90 [i915] [ 8.674800] [<ffffffff81002144>] do_one_initcall+0xd4/0x210 [ 8.674803] [<ffffffff811a2f82>] ? __vunmap+0xb2/0x100 [ 8.674805] [<ffffffff810f1938>] load_module+0x2018/0x2520 [ 8.674808] [<ffffffff810ed320>] ? store_uevent+0x70/0x70 [ 8.674810] [<ffffffff810edef9>] ? copy_module_from_fd.isra.47+0x129/0x180 [ 8.674813] [<ffffffff810f1ff6>] SyS_finit_module+0xa6/0xd0 [ 8.674816] [<ffffffff8165a8a9>] system_call_fastpath+0x16/0x1b [ 8.674817] ---[ end trace 40b86ef82f5d3fe9 ]--- [ 8.799737] ------------[ cut here ]------------ [ 8.799759] WARNING: CPU: 1 PID: 274 at drivers/gpu/drm/drm_modeset_lock.c:90 drm_modeset_drop_locks+0x6e/0x70 [drm]() [ 8.799760] Modules linked in: snd sdhci_pci sdhci mmc_core tg3 joydev pcspkr i915(+) i2c_algo_bit drm_kms_helper drm i2c_i801 serio_raw ptp lpc_ich sound core pps_core mfd_core i2c_core wmi shpchp video parport_pc acpi_cpufreq parport xfs libcrc32c sd_mod sr_mod crc_t10dif cdrom crct10dif_common ahci libahci l ibata firewire_ohci firewire_core yenta_socket crc_itu_t [ 8.799783] CPU: 1 PID: 274 Comm: systemd-udevd Tainted: G W 3.16.0-0.rc1.inc1.el7.elrepo.x86_64 #1 [ 8.799785] Hardware name: Dell Inc. Latitude E5500 /0DW633, BIOS A19 06/13/2013 [ 8.799786] 0000000000000000 00000000ac883064 ffff8800d841b600 ffffffff816526d5 [ 8.799789] 0000000000000000 ffff8800d841b638 ffffffff81072c8d ffff8800d841b6d0 [ 8.799791] ffff8800d841b6e0 ffff8800d841b6e0 ffff8800d699a000 ffff8800d8391000 [ 8.799794] Call Trace: [ 8.799800] [<ffffffff816526d5>] dump_stack+0x45/0x56 [ 8.799804] [<ffffffff81072c8d>] warn_slowpath_common+0x7d/0xa0 [ 8.799806] [<ffffffff81072dba>] warn_slowpath_null+0x1a/0x20 [ 8.799817] [<ffffffffa022db2e>] drm_modeset_drop_locks+0x6e/0x70 [drm] [ 8.799849] [<ffffffffa02e63a8>] intel_release_load_detect_pipe+0x48/0xf0 [i915] [ 8.799872] [<ffffffffa03114f1>] intel_tv_detect+0x331/0x570 [i915] [ 8.799879] [<ffffffffa027cac3>] drm_helper_probe_single_connector_modes_merge_bits+0x293/0x3a0 [drm_kms_helper] [ 8.799883] [<ffffffffa027cbe3>] drm_helper_probe_single_connector_modes+0x13/0x20 [drm_kms_helper] [ 8.799887] [<ffffffffa027e9a0>] drm_fb_helper_probe_connector_modes.isra.3+0x50/0x70 [drm_kms_helper] [ 8.799891] [<ffffffffa027facd>] drm_fb_helper_initial_config+0x15d/0x4d0 [drm_kms_helper] [ 8.799911] [<ffffffffa02cb0d2>] ? gen4_write32+0x52/0xb0 [i915] [ 8.799930] [<ffffffffa02b9efd>] ? i915_hpd_irq_setup+0xcd/0xe0 [i915] [ 8.799951] [<ffffffffa02f173f>] intel_fbdev_initial_config+0x1f/0x30 [i915] [ 8.799973] [<ffffffffa03150e9>] i915_driver_load+0xeb9/0xf50 [i915] [ 8.799978] [<ffffffff812fe0b8>] ? kobject_uevent_env+0x178/0x690 [ 8.799981] [<ffffffff8140c1c7>] ? get_device+0x17/0x30 [ 8.799984] [<ffffffff81411ca5>] ? klist_class_dev_get+0x15/0x20 [ 8.799987] [<ffffffff81640a5a>] ? klist_add_tail+0x3a/0x40 [ 8.799989] [<ffffffff8140db59>] ? device_add+0x219/0x630 [ 8.799999] [<ffffffffa021d476>] ? drm_sysfs_device_add+0xd6/0x120 [drm] [ 8.800023] [<ffffffffa021995d>] drm_dev_register+0xad/0x100 [drm] [ 8.800033] [<ffffffffa021c4ef>] drm_get_pci_dev+0x8f/0x1f0 [drm] [ 8.800050] [<ffffffffa028b4bb>] i915_pci_probe+0x3b/0x60 [i915] [ 8.800054] [<ffffffff813354a5>] local_pci_probe+0x45/0xa0 [ 8.800057] [<ffffffff81336655>] ? pci_match_device+0xe5/0x110 [ 8.800060] [<ffffffff813367b9>] pci_device_probe+0xf9/0x150 [ 8.800063] [<ffffffff81410dd0>] driver_probe_device+0x90/0x3c0 [ 8.800065] [<ffffffff814111d3>] __driver_attach+0x93/0xa0 [ 8.800068] [<ffffffff81411140>] ? __device_attach+0x40/0x40 [ 8.800070] [<ffffffff8140ed13>] bus_for_each_dev+0x73/0xc0 [ 8.800072] [<ffffffff8141086e>] driver_attach+0x1e/0x20 [ 8.800075] [<ffffffff81410450>] bus_add_driver+0x180/0x250 [ 8.800077] [<ffffffff814119b4>] driver_register+0x64/0xf0 [ 8.800080] [<ffffffff81334e3c>] __pci_register_driver+0x4c/0x50 [ 8.800089] [<ffffffffa021c75a>] drm_pci_init+0x10a/0x140 [drm] [ 8.800093] [<ffffffffa036b000>] ? 0xffffffffa036afff [ 8.800107] [<ffffffffa036b089>] i915_init+0x89/0x90 [i915] [ 8.800110] [<ffffffff81002144>] do_one_initcall+0xd4/0x210 [ 8.800115] [<ffffffff811a2f82>] ? __vunmap+0xb2/0x100 [ 8.800119] [<ffffffff810f1938>] load_module+0x2018/0x2520 [ 8.800122] [<ffffffff810ed320>] ? store_uevent+0x70/0x70 [ 8.800138] [<ffffffff810edef9>] ? copy_module_from_fd.isra.47+0x129/0x180 [ 8.800141] [<ffffffff810f1ff6>] SyS_finit_module+0xa6/0xd0 [ 8.800145] [<ffffffff8165a8a9>] system_call_fastpath+0x16/0x1b [ 8.800147] ---[ end trace 40b86ef82f5d3fea ]---
Created attachment 140411 [details] Output returned from lspci -nnv
https://patchwork.kernel.org/patch/4315611/
(In reply to Ville Syrjala from comment #2) > https://patchwork.kernel.org/patch/4315611/ I am pleased to report that applying the above patch resolves the problem in the drivers/gpu/drm/drm_modeset_lock.c file. However a new code trace was seen, this time originating from the g4x_wait_for_vblank function of the drivers/gpu/drm/i915/intel_display.c file. ------------[ cut here ]------------ WARNING: CPU: 0 PID: 113 at drivers/gpu/drm/i915/intel_display.c:861 g4x_wait_for_vblank+0xd5/0xf0 [i915]() vblank wait timed out Modules linked in: i915 drm_kms_helper video CPU: 0 PID: 113 Comm: plymouthd Not tainted 3.16.0-0.rc1.inc2.el6.elrepo.x86_64 #1 Hardware name: Dell Inc. Latitude E5500 /0DW633, BIOS A19 06/13/2013 000000000000035d ffff8800dc4239c8 ffffffff8164f6b6 000000000000035d ffff8800dc423a18 ffff8800dc423a08 ffffffff8107146c 00000000fffb740d ffff8800dcfa0000 0000000000071040 000000000000000d 00000000fffb740c Call Trace: [<ffffffff8164f6b6>] dump_stack+0x49/0x5b [<ffffffff8107146c>] warn_slowpath_common+0x8c/0xc0 [<ffffffff81071556>] warn_slowpath_fmt+0x46/0x50 [<ffffffffa0078465>] g4x_wait_for_vblank+0xd5/0xf0 [i915] [<ffffffffa00784b5>] intel_wait_for_vblank+0x35/0x130 [i915] [<ffffffffa00ad76b>] intel_tv_detect_type+0x10b/0x330 [i915] [<ffffffffa00ada65>] intel_tv_detect+0xd5/0x1c0 [i915] [<ffffffffa000fc1b>] drm_helper_probe_single_connector_modes_merge_bits+0x1bb/0x380 [drm_kms_helper] [<ffffffff81403664>] ? _object_find+0x74/0xb0 [<ffffffffa000fe13>] drm_helper_probe_single_connector_modes+0x13/0x20 [drm_kms_helper] [<ffffffff81405e7c>] drm_mode_getconnector+0x40c/0x450 [<ffffffff813f7c90>] drm_ioctl+0x350/0x630 [<ffffffff81405a70>] ? drm_plane_force_disable+0x70/0x70 [<ffffffff811df593>] do_vfs_ioctl+0x73/0x380 [<ffffffff8126b1af>] ? selinux_file_ioctl+0x4f/0xf0 [<ffffffff811df941>] SyS_ioctl+0xa1/0xb0 [<ffffffff81653e29>] system_call_fastpath+0x16/0x1b ---[ end trace 29d16e55157f97ce ]---
(In reply to Alan Bartlett from comment #3) > (In reply to Ville Syrjala from comment #2) > > https://patchwork.kernel.org/patch/4315611/ > > I am pleased to report that applying the above patch resolves the problem in > the drivers/gpu/drm/drm_modeset_lock.c file. Fixed since v3.16-rc2 by commit fb54918af7e7a607af8b70ba052a35ff8acb8620 Author: Rob Clark <robdclark@gmail.com> Date: Sat Jun 7 10:55:39 2014 -0400 drm: fix uninitialized acquire_ctx fields (v2) > However a new code trace was seen, this time originating from the > g4x_wait_for_vblank function of the drivers/gpu/drm/i915/intel_display.c > file. I presume this is not introduced by the above mentioned commit. Please file a new bug report for new bugs. Thanks for the report and testing.