Additional info:
libreport version: 2.0.14
abrt_version:   2.0.13
cmdline:        BOOT_IMAGE=/boot/vmlinuz-3.5.4-2.fc17.x86_64 root=UUID=14a8d90c-0eb9-4df5-862b-644af2f36c86 ro rd.md=0 rd.lvm=0 rd.dm=0 SYSFONT=True KEYTABLE=us rd.luks=0 LANG=en_US.UTF-8 rhgb quiet
kernel:         3.5.4-2.fc17.x86_64
kernel_tainted_long: Proprietary module has been loaded.

backtrace:
:BUG: unable to handle kernel NULL pointer dereference at           (null)
:IP: [<ffffffffa04874b7>] buffer_to_string+0x1b/0x50 [bbswitch]
:PGD 231c38067 PUD 22f989067 PMD 0 
:Oops: 0000 [#1] SMP 
:CPU 5 
:Modules linked in: bbswitch(O+) bnep bluetooth ip6t_REJECT nf_conntrack_ipv6 nf_conntrack_ipv4 nf_defrag_ipv6 nf_defrag_ipv4 xt_state nf_conntrack ip6table_filter ip6_tables uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core videodev media snd_hda_codec_hdmi snd_hda_codec_realtek arc4 mei lpc_ich snd_hda_intel snd_hda_codec snd_hwdep i2c_i801 coretemp jmb38x_ms memstick snd_seq snd_seq_device snd_pcm snd_page_alloc snd_timer snd iwlwifi mac80211 mfd_core ideapad_laptop soundcore cfg80211 kvm microcode sparse_keymap rfkill uinput crc32c_intel ghash_clmulni_intel sdhci_pci sdhci mmc_core i915 video i2c_algo_bit drm_kms_helper drm i2c_core [last unloaded: nvidia]
:Pid: 5681, comm: modprobe Tainted: P           O 3.5.4-2.fc17.x86_64 #1 LENOVO Lenovo IdeaPad Y480/Product Name
:RIP: 0010:[<ffffffffa04874b7>]  [<ffffffffa04874b7>] buffer_to_string+0x1b/0x50 [bbswitch]
:RSP: 0018:ffff88022f471ca8  EFLAGS: 00010246
:RAX: ffffffff819ff59d RBX: 0000000000000000 RCX: 000000000000000b
:RDX: 000000000000000b RSI: ffff88022f471cd8 RDI: 0000000000000000
:RBP: ffff88022f471cc8 R08: 0000000000000000 R09: 000000018040003f
:R10: 0000000000000001 R11: 4d53445f2f471b90 R12: ffff88022f471cd8
:R13: 0000000000000000 R14: ffff88022f471cd8 R15: 0000000000000005
:FS:  00007f90f560d740(0000) GS:ffff88023f340000(0000) knlGS:0000000000000000
:CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
:CR2: 0000000000000000 CR3: 0000000230e78000 CR4: 00000000001407e0
:DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
:DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
:Process modprobe (pid: 5681, threadinfo ffff88022f470000, task ffff8802030b9710)
:Stack:
: 0000000000000100 0000000000000000 ffffffffa04885b0 ffff88022f471d08
: ffff88022f471dd8 ffffffffa0487604 0000000000000000 ffffffffa04885b0
: ffff88022f471df4 ffffffffa04890e0 ffff88022f471dd8 ffffffffa04875d6
:Call Trace:
: [<ffffffffa0487604>] acpi_call_dsm+0x118/0x1f1 [bbswitch]
: [<ffffffffa04875d6>] ? acpi_call_dsm+0xea/0x1f1 [bbswitch]
: [<ffffffff812f6a6a>] ? pci_dev_put+0x1a/0x20
: [<ffffffffa048770e>] has_dsm_func+0x31/0x58 [bbswitch]
: [<ffffffffa0103141>] bbswitch_init+0x141/0x1000 [bbswitch]
: [<ffffffffa0103000>] ? 0xffffffffa0102fff
: [<ffffffff8100212a>] do_one_initcall+0x12a/0x180
: [<ffffffff810ba1a6>] sys_init_module+0x10f6/0x20b0
: [<ffffffff812ed0e0>] ? ddebug_proc_open+0xd0/0xd0
: [<ffffffff81614ee9>] system_call_fastpath+0x16/0x1b
:Code: 00 00 00 00 48 8b 90 a0 00 00 00 eb d4 0f 1f 00 55 48 89 e5 41 56 41 55 41 54 53 0f 1f 44 00 00 31 db 49 89 fd 49 89 f6 49 89 f4 <41> 0f be 54 1d 00 4c 89 e7 31 c0 48 c7 c6 24 80 48 a0 48 ff c3 
:RIP  [<ffffffffa04874b7>] buffer_to_string+0x1b/0x50 [bbswitch]
: RSP <ffff88022f471ca8>
:CR2: 0000000000000000