Additional info:
reporter:       libreport-2.6.4
WARNING: CPU: 1 PID: 1455 at drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c:1287 brcmf_netdev_wait_pend8021x+0x10a/0x120 [brcmfmac]()
Modules linked in: cmac xfs libcrc32c btrfs xor raid6_pq uas usb_storage rfcomm fuse 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 ip_set nfnetlink ebtable_broute bridge stp llc ebtable_nat ebtable_filter ebtables ip6table_mangle ip6table_raw ip6table_security ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_filter ip6_tables iptable_mangle iptable_raw iptable_security iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack binfmt_misc bnep vfat fat snd_hda_codec_hdmi dell_led snd_soc_skl snd_soc_skl_ipc snd_soc_sst_ipc snd_soc_sst_dsp snd_hda_ext_core snd_soc_sst_match snd_soc_core brcmfmac snd_hda_codec_realtek snd_hda_codec_generic snd_compress
 snd_pcm_dmaengine ac97_bus intel_rapl brcmutil dw_dmac_core x86_pkg_temp_thermal snd_hda_intel coretemp i2c_designware_platform i2c_designware_core snd_hda_codec kvm_intel snd_hda_core snd_hwdep snd_seq snd_seq_device dell_laptop snd_pcm dcdbas uvcvideo kvm cfg80211 dell_wmi videobuf2_vmalloc videobuf2_memops irqbypass videobuf2_v4l2 videobuf2_core videodev btusb rtsx_pci_ms snd_timer btrtl memstick joydev media snd i2c_i801 soundcore mei_me mei shpchp idma64 processor_thermal_device intel_lpss_pci intel_soc_dts_iosf hci_uart btbcm btqca btintel bluetooth pinctrl_sunrisepoint pinctrl_intel acpi_als kfifo_buf rfkill intel_lpss_acpi intel_lpss int3403_thermal int3400_thermal acpi_thermal_rel intel_hid tpm_tis int340x_thermal_zone industrialio sparse_keymap tpm acpi_pad nfsd auth_rpcgss
 nfs_acl lockd grace dm_crypt hid_multitouch i915 rtsx_pci_sdmmc mmc_core i2c_algo_bit crct10dif_pclmul drm_kms_helper crc32_pclmul crc32c_intel ghash_clmulni_intel drm serio_raw nvme rtsx_pci wmi i2c_hid video fjes sunrpc scsi_transport_iscsi
CPU: 1 PID: 1455 Comm: wpa_supplicant Not tainted 4.5.0-302.fc24.x86_64 #1
Hardware name: Dell Inc. XPS 13 9350/09JHRY, BIOS 1.3.3 03/01/2016
 0000000000000286 00000000b965b4e1 ffff880463b8b7e8 ffffffff813d3fdf
 0000000000000000 ffffffffa07e93b8 ffff880463b8b820 ffffffff810a5de2
 0000000000000000 ffff88022d5439b0 ffff88022d543880 ffff880463b8ba90
Call Trace:
 [<ffffffff813d3fdf>] dump_stack+0x63/0x84
 [<ffffffff810a5de2>] warn_slowpath_common+0x82/0xc0
 [<ffffffff810a5f2a>] warn_slowpath_null+0x1a/0x20
 [<ffffffffa07d1a8a>] brcmf_netdev_wait_pend8021x+0x10a/0x120 [brcmfmac]
 [<ffffffff810e8900>] ? prepare_to_wait_event+0xf0/0xf0
 [<ffffffffa07bd862>] send_key_to_dongle+0xa2/0x110 [brcmfmac]
 [<ffffffff810dd8b9>] ? enqueue_task_fair+0xa9/0x8b0
 [<ffffffff81020e69>] ? sched_clock+0x9/0x10
 [<ffffffffa07befdf>] brcmf_add_keyext.constprop.34+0x1af/0x2f0 [brcmfmac]
 [<ffffffffa07bf2b5>] brcmf_cfg80211_add_key+0x195/0x350 [brcmfmac]
 [<ffffffffa064a9ad>] nl80211_new_key+0x12d/0x260 [cfg80211]
 [<ffffffff816e9993>] genl_family_rcv_msg+0x1b3/0x3c0
 [<ffffffff817c8f55>] ? schedule+0x35/0x80
 [<ffffffff816e9ba0>] ? genl_family_rcv_msg+0x3c0/0x3c0
 [<ffffffff816e9c27>] genl_rcv_msg+0x87/0xc0
 [<ffffffff816e90f4>] netlink_rcv_skb+0xa4/0xc0
 [<ffffffff816e97c8>] genl_rcv+0x28/0x40
 [<ffffffff816e887b>] netlink_unicast+0x13b/0x1d0
 [<ffffffff816e8dbc>] netlink_sendmsg+0x4ac/0x610
 [<ffffffff816943ab>] sock_sendmsg+0x3b/0x50
 [<ffffffff81694e64>] ___sys_sendmsg+0x284/0x290
 [<ffffffff8135c3f8>] ? selinux_inode_free_security+0x58/0x70
 [<ffffffff81693d2f>] ? sock_destroy_inode+0x2f/0x40
 [<ffffffff8125e1db>] ? destroy_inode+0x3b/0x60
 [<ffffffff8125e31c>] ? evict+0x11c/0x180
 [<ffffffff812597fe>] ? dentry_free+0x4e/0x90
 [<ffffffff8125a581>] ? __dentry_kill+0x141/0x1c0
 [<ffffffff8125a7c9>] ? dput+0x1c9/0x200
 [<ffffffff81263194>] ? mntput+0x24/0x40
 [<ffffffff812448cd>] ? __fput+0x17d/0x1f0
 [<ffffffff816957d1>] __sys_sendmsg+0x51/0x90
 [<ffffffff81695822>] SyS_sendmsg+0x12/0x20
 [<ffffffff817cd0ee>] entry_SYSCALL_64_fastpath+0x12/0x6d