Additional info:
reporter:       libreport-2.5.0
WARNING: CPU: 3 PID: 802 at drivers/net/wireless/iwlwifi/mvm/tx.c:953 iwl_mvm_rx_ba_notif+0x515/0x5b0 [iwlmvm]()
Q 16, tid 0, flow 17
Modules linked in:
 rfcomm fuse ccm xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 tun nf_conntrack_netbios_ns nf_conntrack_broadcast ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 xt_conntrack ebtable_nat ebtable_broute bridge 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 bnep intel_rapl arc4 iosf_mbi x86_pkg_temp_thermal coretemp kvm_intel kvm iwlmvm mac80211 iTCO_wdt iTCO_vendor_support snd_hda_codec_realtek snd_hda_codec_hdmi snd_hda_codec_generic vfat fat snd_hda_intel snd_hda_controller snd_hda_codec iwlwifi snd_hwdep snd_seq cfg80211 snd_seq_device uvcvideo snd_pcm videobuf2_vmalloc
 videobuf2_core btusb serio_raw videobuf2_memops v4l2_common bluetooth videodev snd_timer tpm_crb media rtsx_pci_ms thinkpad_acpi memstick mei_me wmi mei rfkill snd tpm shpchp lpc_ich i2c_i801 soundcore nfsd auth_rpcgss nfs_acl lockd grace sunrpc dm_crypt 8021q garp stp llc mrp i915 rtsx_pci_sdmmc mmc_core crct10dif_pclmul crc32_pclmul crc32c_intel i2c_algo_bit drm_kms_helper drm e1000e ghash_clmulni_intel rtsx_pci mfd_core ptp pps_core video
CPU: 3 PID: 802 Comm: irq/48-iwlwifi Not tainted 4.0.0-0.rc4.git0.1.fc22.x86_64 #1
Hardware name: LENOVO 20CMCTO1WW/20CMCTO1WW, BIOS N10ET30W (1.07 ) 03/05/2015
 0000000000000000 00000000c69ea89f ffff88023a15fb48 ffffffff81781428
 0000000000000000 ffff88023a15fba0 ffff88023a15fb88 ffffffff8109c83a
 ffff88023a15fb78 ffff8802431768a0 ffff8800a24f5ae8 ffff880097025000
Call Trace:
 [<ffffffff81781428>] dump_stack+0x45/0x57
 [<ffffffff8109c83a>] warn_slowpath_common+0x8a/0xc0
 [<ffffffff8109c8c5>] warn_slowpath_fmt+0x55/0x70
 [<ffffffffa0729cf5>] iwl_mvm_rx_ba_notif+0x515/0x5b0 [iwlmvm]
 [<ffffffff8178720b>] ? _raw_spin_unlock_bh+0x1b/0x20
 [<ffffffffa0729617>] ? iwl_mvm_rx_tx_cmd+0x5f7/0x7c0 [iwlmvm]
 [<ffffffffa07233ed>] iwl_mvm_rx_dispatch+0x16d/0x1b0 [iwlmvm]
 [<ffffffffa052b4a8>] iwl_pcie_irq_handler+0xa68/0xf20 [iwlwifi]
 [<ffffffff810d8ac8>] ? pick_next_task_fair+0x1b8/0x970
 [<ffffffff810f5ab0>] ? irq_finalize_oneshot.part.29+0xf0/0xf0
 [<ffffffff810f5ad0>] irq_thread_fn+0x20/0x50
 [<ffffffff810f5d8f>] irq_thread+0x13f/0x170
 [<ffffffff810f5ba0>] ? wake_threads_waitq+0x30/0x30
 [<ffffffff810f5c50>] ? irq_thread_dtor+0xb0/0xb0
 [<ffffffff810bb738>] kthread+0xd8/0xf0
 [<ffffffff810bb660>] ? kthread_worker_fn+0x180/0x180
 [<ffffffff81787798>] ret_from_fork+0x58/0x90
 [<ffffffff810bb660>] ? kthread_worker_fn+0x180/0x180

Potential duplicate: bug 1205083