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Description of problem: kernel oops while booting Lenovo Ideapad S10-3t [ 0.875123] ACPI: Deprecated procfs I/F for AC is loaded, please retry with CONFIG_ACPI_PROCFS_POWER cleared [ 0.885145] ACPI: AC Adapter [ACAD] (on-line) [ 0.885472] input: Power Button as /devices/LNXSYSTM:00/device:00/PNP0A08:00/PNP0C0C:00/input/input0 [ 0.885483] ACPI: Power Button [PWRB] [ 0.885657] input: Lid Switch as /devices/LNXSYSTM:00/device:00/PNP0C0D:00/input/input1 [ 0.900186] ACPI: Lid Switch [LID] [ 0.900229] ------------[ cut here ]------------ [ 0.900246] WARNING: at fs/proc/generic.c:586 proc_register+0x155/0x192() [ 0.900254] Hardware name: 20040M18 [ 0.900261] proc_dir_entry 'power/PWRB' already registered [ 0.900267] Modules linked in: [ 0.900278] Pid: 1, comm: swapper Not tainted 2.6.38-0.rc5.git1.1.fc15.x86_64 #1 [ 0.900285] Call Trace: [ 0.900301] [<ffffffff8105538e>] ? warn_slowpath_common+0x83/0x9b [ 0.900314] [<ffffffff81055449>] ? warn_slowpath_fmt+0x46/0x48 [ 0.900325] [<ffffffff8116ff0e>] ? proc_register+0x155/0x192 [ 0.900334] [<ffffffff81170629>] ? proc_mkdir_mode+0x3f/0x57 [ 0.900343] [<ffffffff81170657>] ? proc_mkdir+0x16/0x18 [ 0.900352] [<ffffffff8129a5a2>] ? acpi_button_add+0x228/0x3e1 [ 0.900362] [<ffffffff8127754e>] ? acpi_device_probe+0x4e/0x11c [ 0.900372] [<ffffffff812e2e01>] ? driver_probe_device+0x124/0x1ff [ 0.900380] [<ffffffff812e2f36>] ? __driver_attach+0x5a/0x7e [ 0.900388] [<ffffffff812e2edc>] ? __driver_attach+0x0/0x7e [ 0.900396] [<ffffffff812e1e5d>] ? bus_for_each_dev+0x53/0x87 [ 0.900404] [<ffffffff812e2a0e>] ? driver_attach+0x1e/0x20 [ 0.900411] [<ffffffff812e2623>] ? bus_add_driver+0xe2/0x235 [ 0.900421] [<ffffffff81b8cdfe>] ? acpi_button_init+0x0/0x56 [ 0.900429] [<ffffffff812e311f>] ? driver_register+0x98/0x105 [ 0.900436] [<ffffffff81b8cdfe>] ? acpi_button_init+0x0/0x56 [ 0.900445] [<ffffffff81277d14>] ? acpi_bus_register_driver+0x43/0x45 [ 0.900452] [<ffffffff81b8ce32>] ? acpi_button_init+0x34/0x56 [ 0.900462] [<ffffffff810020a4>] ? do_one_initcall+0x7f/0x137 [ 0.900471] [<ffffffff81b57e88>] ? kernel_init+0x228/0x2a2 [ 0.900480] [<ffffffff8100a9e4>] ? kernel_thread_helper+0x4/0x10 [ 0.900489] [<ffffffff81b57c60>] ? kernel_init+0x0/0x2a2 [ 0.900496] [<ffffffff8100a9e0>] ? kernel_thread_helper+0x0/0x10 [ 0.900512] ---[ end trace e93713a9d40cd06c ]--- [ 0.900666] input: Power Button as /devices/LNXSYSTM:00/device:00/PNP0C0C:01/input/input2 [ 0.900677] ACPI: Power Button [PWRB] [ 0.900856] input: Sleep Button as /devices/LNXSYSTM:00/device:00/PNP0C0E:00/input/input3 [ 0.900866] ACPI: Sleep Button [SLPB] [ 0.901061] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input4 [ 0.901071] ACPI: Power Button [PWRF] [ 0.901429] ACPI: acpi_idle yielding to intel_idle [ 0.930101] thermal LNXTHERM:00: registered as thermal_zone0 [ 0.930108] ACPI: Thermal Zone [TZ01] (36 C) How reproducible: Everytime Actual results: Kerneloop Expected results: No crash, no abrt warning Additional info: feel free to ask for any additional info!
Awesome. Your DSDT appears to define two power buttons. Can you install pmtools, run acpidump as root and attach the output?
Created attachment 480980 [details] acpidump output
Your ACPI tables are technically correct but practically pathological. I'll figure out a workaround.
Created attachment 481022 [details] Generate unique names for ACPI buttons Can you test this patch?
Kernel now exports PWRB, PWRB_1 and PWRF_2 (shouldn't be now PWRF?), no oops.
That's odd, I can't find any sign of PWRF in your DSDT. But I'll pass this upstream anyway, since it seems like a good idea.
Matthew sent this upstream, but they chose to remove this code instead. See: http://comments.gmane.org/gmane.linux.acpi.devel/49592 The commit to remove the code was in the 2.6.39 kernel, so we should have that in the latest F15 updates which are 3.0 based. If you are still seeing problems, please reopen.
*** Bug 722848 has been marked as a duplicate of this bug. ***