Additional info:
reporter:       libreport-2.1.12
WARNING: CPU: 1 PID: 458 at drivers/net/wireless/iwlwifi/dvm/tx.c:1160 iwlagn_rx_reply_tx+0xb54/0xb60 [iwldvm]()
Modules linked in: nfsv4 dns_resolver nfs lockd sunrpc fscache uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core videodev media netlink_diag af_packet_diag udp_diag tcp_diag inet_diag unix_diag fuse ipt_MASQUERADE xt_CHECKSUM tun bnep bluetooth 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 snd_hda_codec_analog arc4 iwldvm mac80211 snd_hda_intel snd_hda_codec snd_hwdep snd_seq iwlwifi iTCO_wdt coretemp iTCO_vendor_support snd_seq_device cfg80211 hp_wmi sparse_keymap rfkill tg3 kvm_intel ptp pps_core kvm microcode serio_raw shpchp hp_accel lis3lv02d input_polldev snd_pcm snd_page_alloc snd_timer snd lpc_ich mfd_core wmi soundcore acpi_cpufreq binfmt_misc i915 i2c_algo_bit drm_kms_helper drm i2c_core video
CPU: 1 PID: 458 Comm: irq/46-iwlwifi Not tainted 3.12.9-301.fc20.x86_64 #1
Hardware name: Hewlett-Packard HP Compaq 6730b /30DD, BIOS 68PDD Ver. F.16 10/21/2010
 0000000000000009 ffff880075021c28 ffffffff81667af7 0000000000000000
 ffff880075021c60 ffffffff8106918d ffff8800765c97d0 ffff88003c4d1000
 ffff88003c4d1000 ffff88003c4d1028 0000000000000001 ffff880075021c70
Call Trace:
 [<ffffffff81667af7>] dump_stack+0x45/0x56
 [<ffffffff8106918d>] warn_slowpath_common+0x7d/0xa0
 [<ffffffff8106926a>] warn_slowpath_null+0x1a/0x20
 [<ffffffffa046a144>] iwlagn_rx_reply_tx+0xb54/0xb60 [iwldvm]
 [<ffffffffa0473b9e>] iwl_rx_dispatch+0x8e/0xf0 [iwldvm]
 [<ffffffffa033827a>] iwl_pcie_irq_handler+0x83a/0xc80 [iwlwifi]
 [<ffffffff810bb6c0>] ? irq_finalize_oneshot.part.29+0xe0/0xe0
 [<ffffffff810bb6e0>] irq_thread_fn+0x20/0x50
 [<ffffffff810bb6c0>] ? irq_finalize_oneshot.part.29+0xe0/0xe0
 [<ffffffff810bb5af>] irq_thread+0x11f/0x150
 [<ffffffff810bb760>] ? irq_forced_thread_fn+0x50/0x50
 [<ffffffff810bb490>] ? irq_thread_check_affinity+0x30/0x30
 [<ffffffff8108b080>] kthread+0xc0/0xd0
 [<ffffffff8108afc0>] ? insert_kthread_work+0x40/0x40
 [<ffffffff816769fc>] ret_from_fork+0x7c/0xb0
 [<ffffffff8108afc0>] ? insert_kthread_work+0x40/0x40

Potential duplicate: bug 1018366