------------[ cut here ]------------
WARNING: at /build/buildd/linux-2.6.32/lib/kobject.c:595 kobject_put+0x50/0x60()
Hardware name: Studio 1747
kobject: '<NULL>' (ffff8801d30ceb90): is not initialized, yet kobject_put() is being called.
Modules linked in: nls_utf8 isofs binfmt_misc rfcomm sco bridge stp bnep l2cap vboxnetadp vboxnetflt vboxdrv vmnet ppdev parport_pc vmblock vsock vmci vmmon kvm_intel kvm snd_hda_codec_atihdmi snd_hda_codec_idt snd_hda_intel snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss snd_seq_dummy snd_pcm snd_seq_oss arc4 snd_seq_midi snd_rawmidi snd_seq_midi_event joydev snd_seq iwlagn snd_timer snd_seq_device iwlcore uvcvideo fbcon videodev sdhci_pci tileblit font sdhci v4l1_compat video btusb psmouse snd mac80211 soundcore e1000 dell_wmi bitblit serio_raw output bluetooth snd_page_alloc led_class v4l2_compat_ioctl32 cfg80211 softcursor fglrx(P) dell_laptop dcdbas vga16fb vgastate lp parport hid_logitech ff_memless usbhid hid usb_storage ohci1394 r8169 mii ieee1394 ahci
Pid: 4023, comm: vmware-vmx Tainted: P        W  2.6.32-20-generic #30-Ubuntu
Call Trace:
 [<ffffffff81066d0b>] warn_slowpath_common+0x7b/0xc0
 [<ffffffff81066db1>] warn_slowpath_fmt+0x41/0x50
 [<ffffffff812b3350>] kobject_put+0x50/0x60
 [<ffffffff81364ce7>] put_device+0x17/0x20
 [<ffffffffa03abfc9>] hci_free_dev+0x29/0x30 [bluetooth]
 [<ffffffffa046acd8>] btusb_probe+0x498/0x500 [btusb]
 [<ffffffff813d9425>] usb_probe_interface+0xe5/0x1d0
 [<ffffffff81368eb5>] really_probe+0x65/0x170
 [<ffffffff81369005>] driver_probe_device+0x45/0x70
 [<ffffffff813690d0>] ? __device_attach+0x0/0x60
 [<ffffffff81369123>] __device_attach+0x53/0x60
 [<ffffffff81367f88>] bus_for_each_drv+0x68/0x90
 [<ffffffff813691ec>] device_attach+0x8c/0xa0
 [<ffffffff813df2fd>] proc_ioctl+0x1cd/0x210
 [<ffffffff813e0605>] usbdev_ioctl+0x6a5/0xfb0
 [<ffffffff81147004>] ? cp_new_stat+0xe4/0x100
 [<ffffffff81152b2c>] vfs_ioctl+0x7c/0xa0
 [<ffffffff81152d81>] do_vfs_ioctl+0x81/0x380
 [<ffffffff81142ac2>] ? vfs_write+0x132/0x1a0
 [<ffffffff81153101>] sys_ioctl+0x81/0xa0
 [<ffffffff810131b2>] system_call_fastpath+0x16/0x1b
---[ end trace 606c198d65d30339 ]---