[    8.910064] ------------[ cut here ]------------
[    8.911030] kernel BUG at net/rfkill/core.c:244!
[    8.911030] invalid opcode: 0000 [#1] SMP 
[    8.911030] Modules linked in: hp_wmi(+) psmouse sparse_keymap rfkill yenta_socket(+) pcmcia_rsrc pcmcia_core snd_hda_intel(+) snd_hda_codec snd_hwdep snd_pcm wmi snd_page_alloc serio_raw snd_timer ehci_pci ehci_hcd button battery ac snd soundcore microcode evdev loop reiserfs
[    8.911030] Pid: 1075, comm: udevd Not tainted 3.9-hp530.corradoroberto.it #1 Hewlett-Packard HP 530 Notebook PC/30D5
[    8.911030] EIP: 0060:[<f85b24dd>] EFLAGS: 00010246 CPU: 1
[    8.911030] EIP is at rfkill_set_hw_state+0x8d/0x90 [rfkill]
[    8.911030] EAX: 00000000 EBX: 00000001 ECX: 00000018 EDX: 00000001
[    8.911030] ESI: 00000000 EDI: f59d0800 EBP: f58b7d20 ESP: f58b7d10
[    8.911030]  DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
[    8.911030] CR0: 8005003b CR2: b76ab200 CR3: 358c7000 CR4: 000007f0
[    8.911030] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
[    8.911030] DR6: ffff0ff0 DR7: 00000400
[    8.911030] Process udevd (pid: 1075, ti=f58b6000 task=f60f0d50 task.ti=f58b6000)
[    8.911030] Stack:
[    8.911030]  00000004 00000000 f59d080c f59d0800 f58b7d40 f863122f f862f0e8 00000003
[    8.911030]  00000f29 f59d080c f862f1d4 f59d0800 f58b7d54 c12dd8ee f59d080c f862f1d4
[    8.911030]  f862f1d4 f58b7d78 c12dbcfc f59d080c f862f1d4 f58b7d78 c12dd959 f59d080c
[    8.911030] Call Trace:
[    8.911030]  [<f863122f>] hp_wmi_bios_setup+0x22f/0x34d [hp_wmi]
[    8.911030]  [<c12dd8ee>] platform_drv_probe+0x2e/0x60
[    8.911030]  [<c12dbcfc>] driver_probe_device+0x5c/0x1e0
[    8.911030]  [<c12dd959>] ? platform_match+0x39/0x80
[    8.911030]  [<c12dbf31>] __driver_attach+0x71/0x80
[    8.911030]  [<c12dbec0>] ? __device_attach+0x40/0x40
[    8.911030]  [<c12da417>] bus_for_each_dev+0x47/0x80
[    8.911030]  [<c12db8fe>] driver_attach+0x1e/0x20
[    8.911030]  [<c12dbec0>] ? __device_attach+0x40/0x40
[    8.911030]  [<c12db5af>] bus_add_driver+0x1af/0x260
[    8.911030]  [<c12dc4aa>] driver_register+0x6a/0x130
[    8.911030]  [<c12dd51f>] ? platform_device_add+0x10f/0x240
[    8.911030]  [<c12dd740>] platform_driver_register+0x40/0x50
[    8.911030]  [<c12dd7f8>] platform_driver_probe+0x18/0x70
[    8.911030]  [<f86314e1>] hp_wmi_init+0x194/0x1cb [hp_wmi]
[    8.911030]  [<f863134d>] ? hp_wmi_bios_setup+0x34d/0x34d [hp_wmi]
[    8.911030]  [<c10011f2>] do_one_initcall+0x102/0x150
[    8.911030]  [<c105d434>] ? __blocking_notifier_call_chain+0x44/0x60
[    8.911030]  [<c10937ce>] load_module+0x1b5e/0x20a0
[    8.911030]  [<c1093d80>] sys_init_module+0x70/0xa0
[    8.911030]  [<c14c8fdf>] syscall_call+0x7/0xb
[    8.911030]  [<c14c0000>] ? percpu_counter_hotcpu_callback+0x11/0x7a
[    8.911030] Code: e8 69 ff ff ff 80 7e 14 00 74 d8 0f b6 45 f0 83 e0 01 38 c3 74 cd 8d 86 00 02 00 00 e8 3d f8 a9 c8 89 f8 83 c4 04 5b 5e 5f 5d c3 <0f> 0b 90 55 89 e5 3e 8d 74 26 00 8b 80 90 00 00 00 80 78 f4 00
[    8.911030] EIP: [<f85b24dd>] rfkill_set_hw_state+0x8d/0x90 [rfkill] SS:ESP 0068:f58b7d10
[    8.920969] ---[ end trace 68e3bab393aad648 ]---

Apr 30 17:38:34 hp530 udevd[1057]: worker [1298] timeout, kill it 
Apr 30 17:38:34 hp530 udevd[1057]: seq 2519 '/devices/virtual/wmi/95F24279-4D7B-4334-9387-ACCDC67EF61C' killed 
Apr 30 17:38:34 hp530 udevd[1057]: worker [1298] terminated by signal 9 (Killed)