Additional info:
reporter:       libreport-2.3.0
WARNING: CPU: 0 PID: 24487 at drivers/base/firmware_class.c:1127 _request_firmware+0x519/0x7f0()
Modules linked in: xt_CHECKSUM ipt_MASQUERADE fuse ccm ip6t_rpfilter ip6t_REJECT xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_security ip6table_raw ip6table_filter ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw toshiba_acpi tun sparse_keymap toshiba_haps hp_accel lis3lv02d input_polldev uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core btusb v4l2_common videodev bluetooth media x86_pkg_temp_thermal coretemp kvm_intel kvm snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep arc4 iwldvm mac80211 iTCO_wdt iTCO_vendor_support
 sdhci_pci iwlwifi snd_seq sdhci snd_seq_device snd_pcm mmc_core cfg80211 joydev thinkpad_acpi serio_raw shpchp i2c_i801 mei_me mei snd_timer tpm_tis snd lpc_ich wmi mfd_core soundcore rfkill nfsd auth_rpcgss nfs_acl lockd sunrpc binfmt_misc dm_crypt i915 crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel i2c_algo_bit drm_kms_helper e1000e drm video ptp pps_core ecryptfs encrypted_keys trusted tpm
CPU: 0 PID: 24487 Comm: kworker/u17:0 Not tainted 3.17.7-300.fc21.x86_64 #1
Hardware name: LENOVO 2350BH3/2350BH3, BIOS G1ET96WW (2.56 ) 07/18/2013
Workqueue: hci0 hci_power_on [bluetooth]
 0000000000000000 0000000054133353 ffff8802a9ee7bf0 ffffffff817401ea
 0000000000000000 ffff8802a9ee7c28 ffffffff810970bd ffff8802a9ee7d18
 00000000fffffff5 ffff880405d8a080 0000000000000220 ffff88013f58b900
Call Trace:
 [<ffffffff817401ea>] dump_stack+0x45/0x56

Potential duplicate: bug 1045750