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Created attachment 519151 [details] Output of 'dmesg' Description of problem: Seeing the below in dmesg output. Attaching complete output of dmesg. [ 6.089954] WARNING: at fs/sysfs/dir.c:455 sysfs_add_one+0x97/0xab() [ 6.090089] Hardware name: 74585FU [ 6.090196] sysfs: cannot create duplicate filename '/devices/pci0000:00/0000:00:02.0/drm/card0/card0-LVDS-1/intel_backlight' [ 6.090377] Modules linked in: i915(+) drm_kms_helper drm i2c_algo_bit i2c_core video [ 6.090841] Pid: 131, comm: modprobe Not tainted 3.1.0-0.rc2.git7.1.fc17.x86_64 #1 [ 6.091030] Call Trace: [ 6.091138] [<ffffffff8105c528>] warn_slowpath_common+0x83/0x9b [ 6.091248] [<ffffffff8105c5e3>] warn_slowpath_fmt+0x46/0x48 [ 6.091358] [<ffffffff811a1e38>] sysfs_add_one+0x97/0xab [ 6.091466] [<ffffffff811a1ec0>] create_dir+0x74/0xad [ 6.091575] [<ffffffff811a1faa>] sysfs_create_dir+0x90/0xa7 [ 6.091686] [<ffffffff81249885>] kobject_add_internal+0x120/0x1e3 [ 6.091797] [<ffffffff8108f59a>] ? debug_check_no_locks_freed+0x11b/0x130 [ 6.091909] [<ffffffff81249cc2>] kobject_add+0x91/0xa2 [ 6.092040] [<ffffffff813142ef>] device_add+0xff/0x5a8 [ 6.092150] [<ffffffff8131f475>] ? pm_runtime_init+0x106/0x10a [ 6.092260] [<ffffffff813147b3>] device_register+0x1b/0x1f [ 6.092371] [<ffffffff81292a34>] backlight_device_register+0x130/0x1a0 [ 6.092510] [<ffffffffa009acd4>] intel_panel_setup_backlight+0x7d/0xd2 [i915] [ 6.092703] [<ffffffffa00902d9>] intel_modeset_init+0xd62/0xe73 [i915] [ 6.092827] [<ffffffffa006e35e>] i915_driver_load+0x8f4/0xdc0 [i915] [ 6.092938] [<ffffffff813147b3>] ? device_register+0x1b/0x1f [ 6.093105] [<ffffffffa0027b6a>] drm_get_pci_dev+0x170/0x26c [drm] [ 6.093234] [<ffffffffa00a47df>] i915_pci_probe+0x1b/0x1d [i915] [ 6.093346] [<ffffffff8126c68f>] local_pci_probe+0x44/0x75 [ 6.093458] [<ffffffff8126d215>] pci_device_probe+0xd0/0xff [ 6.093569] [<ffffffff81316b97>] driver_probe_device+0x131/0x213 [ 6.093680] [<ffffffff81316cd7>] __driver_attach+0x5e/0x82 [ 6.093791] [<ffffffff81316c79>] ? driver_probe_device+0x213/0x213 [ 6.093903] [<ffffffff81315bd8>] bus_for_each_dev+0x59/0x8f [ 6.094043] [<ffffffff8131676b>] driver_attach+0x1e/0x20 [ 6.094154] [<ffffffff81316383>] bus_add_driver+0xd4/0x22a [ 6.094264] [<ffffffff8131719a>] driver_register+0x98/0x105 [ 6.094374] [<ffffffff8126dae8>] __pci_register_driver+0x66/0xd2 [ 6.094491] [<ffffffffa0027cf0>] drm_pci_init+0x8a/0xef [drm] [ 6.094602] [<ffffffffa00cf000>] ? 0xffffffffa00cefff [ 6.094723] [<ffffffffa00cf08b>] i915_init+0x8b/0x8d [i915] [ 6.094834] [<ffffffff81002099>] do_one_initcall+0x7f/0x13a [ 6.094943] [<ffffffffa00cf000>] ? 0xffffffffa00cefff [ 6.095078] [<ffffffff8109a5ac>] sys_init_module+0x114/0x267 [ 6.095190] [<ffffffff8150af82>] system_call_fastpath+0x16/0x1b [ 6.095300] ---[ end trace 42c59cfb82f460f5 ]--- [ 6.095470] kobject_add_internal failed for intel_backlight with -EEXIST, don't try to register things with the same name in the same directory. [ 6.095651] Pid: 131, comm: modprobe Tainted: G W 3.1.0-0.rc2.git7.1.fc17.x86_64 #1 [ 6.095823] Call Trace: [ 6.095930] [<ffffffff81249916>] kobject_add_internal+0x1b1/0x1e3 [ 6.096062] [<ffffffff8108f59a>] ? debug_check_no_locks_freed+0x11b/0x130 [ 6.096175] [<ffffffff81249cc2>] kobject_add+0x91/0xa2 [ 6.096285] [<ffffffff813142ef>] device_add+0xff/0x5a8 [ 6.096395] [<ffffffff8131f475>] ? pm_runtime_init+0x106/0x10a [ 6.096505] [<ffffffff813147b3>] device_register+0x1b/0x1f [ 6.096614] [<ffffffff81292a34>] backlight_device_register+0x130/0x1a0 [ 6.096744] [<ffffffffa009acd4>] intel_panel_setup_backlight+0x7d/0xd2 [i915] [ 6.096932] [<ffffffffa00902d9>] intel_modeset_init+0xd62/0xe73 [i915] [ 6.097096] [<ffffffffa006e35e>] i915_driver_load+0x8f4/0xdc0 [i915] [ 6.097206] [<ffffffff813147b3>] ? device_register+0x1b/0x1f [ 6.097324] [<ffffffffa0027b6a>] drm_get_pci_dev+0x170/0x26c [drm] [ 6.097450] [<ffffffffa00a47df>] i915_pci_probe+0x1b/0x1d [i915] [ 6.097560] [<ffffffff8126c68f>] local_pci_probe+0x44/0x75 [ 6.097669] [<ffffffff8126d215>] pci_device_probe+0xd0/0xff [ 6.097779] [<ffffffff81316b97>] driver_probe_device+0x131/0x213 [ 6.097889] [<ffffffff81316cd7>] __driver_attach+0x5e/0x82 [ 6.098017] [<ffffffff81316c79>] ? driver_probe_device+0x213/0x213 [ 6.098129] [<ffffffff81315bd8>] bus_for_each_dev+0x59/0x8f [ 6.098239] [<ffffffff8131676b>] driver_attach+0x1e/0x20 [ 6.098349] [<ffffffff81316383>] bus_add_driver+0xd4/0x22a [ 6.098459] [<ffffffff8131719a>] driver_register+0x98/0x105 [ 6.098570] [<ffffffff8126dae8>] __pci_register_driver+0x66/0xd2 [ 6.098687] [<ffffffffa0027cf0>] drm_pci_init+0x8a/0xef [drm] [ 6.098797] [<ffffffffa00cf000>] ? 0xffffffffa00cefff [ 6.098917] [<ffffffffa00cf08b>] i915_init+0x8b/0x8d [i915] [ 6.099052] [<ffffffff81002099>] do_one_initcall+0x7f/0x13a [ 6.099166] [<ffffffffa00cf000>] ? 0xffffffffa00cefff [ 6.099277] [<ffffffff8109a5ac>] sys_init_module+0x114/0x267 [ 6.099390] [<ffffffff8150af82>] system_call_fastpath+0x16/0x1b [ 6.099527] [drm:intel_panel_setup_backlight] *ERROR* Failed to register backlight: -17 [ 6.406979] fbcon: inteldrmfb (fb0) is primary device Version-Release number of selected component (if applicable): kernel-3.1.0-0.rc2.git7.1.fc17.x86_64 How reproducible: Every boot Steps to Reproduce: 1. 2. 3. Actual results: Expected results: Additional info:
Dave reported this upstream: https://lkml.org/lkml/2011/8/17/163
A patch has been posted to fix this. I'll get it committed and built.
kernel-3.1.0-0.rc3.git0.0.fc16 has been submitted as an update for Fedora 16. https://admin.fedoraproject.org/updates/kernel-3.1.0-0.rc3.git0.0.fc16
Package kernel-3.1.0-0.rc3.git0.0.fc16: * should fix your issue, * was pushed to the Fedora 16 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing kernel-3.1.0-0.rc3.git0.0.fc16' as soon as you are able to, then reboot. Please go to the following url: https://admin.fedoraproject.org/updates/kernel-3.1.0-0.rc3.git0.0.fc16 then log in and leave karma (feedback).
kernel-3.1.0-0.rc3.git0.0.fc16 has been pushed to the Fedora 16 stable repository. If problems still persist, please make note of it in this bug report.