0008772: [abrt] kernel: WARNING: at drivers/gpu/drm/i915/intel_panel.c:758 i9xx_enable_backlight+0xea/0x110 [i915]()

Description of problem:<br /> Install CentOS from USB live, then restart PC, this message is appeared.<br /> <br /> Version-Release number of selected component:<br /> kernel<br /> <br /> Truncated backtrace:<br /> WARNING: at drivers/gpu/drm/i915/intel_panel.c:758 i9xx_enable_backlight+0xea/0x110 [i915]()<br /> backlight already enabled<br /> Modules linked in: pata_acpi(+) usb_storage i915(+) firewire_ohci(+) ata_piix libata i2c_algo_bit drm_kms_helper firewire_core yenta_socket(+) crc_itu_t drm sky2 i2c_core video<br /> CPU: 1 PID: 207 Comm: systemd-udevd Not tainted 3.10.0-229.el7.x86_64 #1<br /> Hardware name: Sony Corporation VGN-C2S_H/VAIO, BIOS R0080J4 12/19/2006<br /> ffff880078bcb368 00000000ba738871 ffff880078bcb320 ffffffff81604b0a<br /> ffff880078bcb358 ffffffff8106e34b ffff880036420000 ffff88003697d800<br /> ffff880036430800 0000000000000246 ffffffffa0174130 ffff880078bcb3c0<br /> Call Trace:<br /> [<ffffffff81604b0a>] dump_stack+0x19/0x1b<br /> [<ffffffff8106e34b>] warn_slowpath_common+0x6b/0xb0<br /> [<ffffffffa0174130>] ? gen4_write8+0xb0/0xb0 [i915]<br /> [<ffffffff8106e3ec>] warn_slowpath_fmt+0x5c/0x80<br /> [<ffffffffa01742de>] ? gen4_read32+0x4e/0xc0 [i915]<br /> [<ffffffffa01b58ba>] i9xx_enable_backlight+0xea/0x110 [i915]<br /> [<ffffffffa01b6b42>] intel_panel_enable_backlight+0x82/0xd0 [i915]<br /> [<ffffffffa01b490b>] intel_enable_lvds+0x18b/0x1a0 [i915]<br /> [<ffffffffa01877fb>] i9xx_crtc_enable+0x3eb/0x490 [i915]<br /> [<ffffffffa018c4f2>] __intel_set_mode+0x812/0xa90 [i915]<br /> [<ffffffffa018fbe6>] intel_set_mode+0x16/0x30 [i915]<br /> [<ffffffffa0190b8c>] intel_crtc_set_config+0x91c/0xdf0 [i915]<br /> [<ffffffffa0044711>] drm_mode_set_config_internal+0x61/0xe0 [drm]<br /> [<ffffffffa008be83>] restore_fbdev_mode+0xb3/0xe0 [drm_kms_helper]<br /> [<ffffffffa008dad5>] drm_fb_helper_restore_fbdev_mode_unlocked+0x25/0x70 [drm_kms_helper]<br /> [<ffffffffa008db42>] drm_fb_helper_set_par+0x22/0x50 [drm_kms_helper]<br /> [<ffffffff81333854>] fbcon_init+0x4f4/0x570<br /> [<ffffffff813a0ff8>] visual_init+0xb8/0x120<br /> [<ffffffff813a3a23>] do_bind_con_driver+0x163/0x330<br /> [<ffffffff813a4129>] do_take_over_console+0x49/0x60<br /> [<ffffffff8132f0a3>] do_fbcon_takeover+0x63/0xd0<br /> [<ffffffff813343bd>] fbcon_event_notify+0x60d/0x720<br /> [<ffffffff816103ac>] notifier_call_chain+0x4c/0x70<br /> [<ffffffff8109d72d>] __blocking_notifier_call_chain+0x4d/0x70<br /> [<ffffffff8109d766>] blocking_notifier_call_chain+0x16/0x20<br /> [<ffffffff81325a6b>] fb_notifier_call_chain+0x1b/0x20<br /> [<ffffffff81327a46>] register_framebuffer+0x1f6/0x340<br /> [<ffffffffa008de7e>] drm_fb_helper_initial_config+0x30e/0x4d0 [drm_kms_helper]<br /> [<ffffffffa0174182>] ? gen4_write32+0x52/0xb0 [i915]<br /> [<ffffffffa019b85f>] intel_fbdev_initial_config+0x1f/0x30 [i915]<br /> [<ffffffffa01c0afa>] i915_driver_load+0xfaa/0x1040 [i915]<br /> [<ffffffff812d874b>] ? kobject_uevent_env+0x1ab/0x620<br /> [<ffffffff813ce587>] ? get_device+0x17/0x30<br /> [<ffffffff813d4335>] ? klist_class_dev_get+0x15/0x20<br /> [<ffffffff815f277a>] ? klist_add_tail+0x3a/0x40<br /> [<ffffffff813cff89>] ? device_add+0x219/0x7a0<br /> [<ffffffffa0042527>] ? drm_sysfs_device_add+0xd7/0x120 [drm]<br /> [<ffffffffa003ea0d>] drm_dev_register+0xad/0x100 [drm]<br /> [<ffffffffa0041589>] drm_get_pci_dev+0x89/0x200 [drm]<br /> [<ffffffffa01334db>] i915_pci_probe+0x3b/0x60 [i915]<br /> [<ffffffff81308c55>] local_pci_probe+0x45/0xa0<br /> [<ffffffff8130a0c5>] ? pci_match_device+0xc5/0xd0<br /> [<ffffffff8130a209>] pci_device_probe+0xf9/0x150<br /> [<ffffffff813d35a7>] driver_probe_device+0x87/0x390<br /> [<ffffffff813d3983>] __driver_attach+0x93/0xa0<br /> [<ffffffff813d38f0>] ? __device_attach+0x40/0x40<br /> [<ffffffff813d1313>] bus_for_each_dev+0x73/0xc0<br /> [<ffffffff813d2ffe>] driver_attach+0x1e/0x20<br /> [<ffffffff813d2b50>] bus_add_driver+0x200/0x2d0<br /> [<ffffffff813d4004>] driver_register+0x64/0xf0<br /> [<ffffffff81309cc5>] __pci_register_driver+0xa5/0xc0<br /> [<ffffffffa004180a>] drm_pci_init+0x10a/0x140 [drm]<br /> [<ffffffffa0217000>] ? 0xffffffffa0216fff<br /> [<ffffffffa0217089>] i915_init+0x89/0x90 [i915]<br /> [<ffffffff810020b8>] do_one_initcall+0xb8/0x230<br /> [<ffffffff810dd14a>] load_module+0x131a/0x1b20<br /> [<ffffffff812f8210>] ? ddebug_proc_write+0xf0/0xf0<br /> [<ffffffff810d96d3>] ? copy_module_from_fd.isra.43+0x53/0x150<br /> [<ffffffff810ddb06>] SyS_finit_module+0xa6/0xd0<br /> [<ffffffff81614a29>] system_call_fastpath+0x16/0x1b