Backtrace

WARNING: CPU: 3 PID: 27309 at net/mac80211/driver-ops.c:36 drv_stop+0xf3/0x100 [mac80211]
Modules linked in: rfcomm ccm xt_CHECKSUM xt_MASQUERADE nf_nat_tftp nf_conntrack_tftp nf_conntrack_netbios_ns nf_conntrack_broadcast xt_CT ip6t_REJECT nf_reject_ipv6 ip6t_rpfilter ipt_REJECT nf_reject_ipv4 xt_conntrack ebtable_nat ebtable_broute ip6table_nat ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_nat iptable_mangle iptable_raw iptable_security nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun bridge stp llc ip_set nfnetlink ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter cmac bnep nouveau mxm_wmi ttm sunrpc squashfs loop btusb btrtl btbcm btintel iwldvm bluetooth mac80211 intel_rapl_msr ecdh_generic libarc4 ecc uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_common videodev mc intel_rapl_common iwlwifi iTCO_wdt intel_pmc_bxt x86_pkg_temp_thermal dell_laptop snd_hda_codec_idt snd_hda_codec_generic ledtrig_audio intel_powerclamp iTCO_vendor_support joydev mei_hdcp ppdev coretemp at24 kvm_intel mei_wdt dell_wmi
 sparse_keymap kvm irqbypass dell_smm_hwmon rapl intel_cstate cfg80211 pcspkr intel_uncore dell_smbios dcdbas snd_hda_codec_hdmi dell_wmi_descriptor snd_hda_intel snd_intel_dspcfg snd_hda_codec snd_hda_core snd_hwdep wmi_bmof snd_seq snd_seq_device snd_pcm snd_timer snd soundcore i2c_i801 parport_pc mei_me i2c_smbus parport mei dell_smo8800 dell_rbtn lpc_ich rfkill ip_tables i915 sdhci_pci cqhci sdhci crct10dif_pclmul crc32_pclmul crc32c_intel i2c_algo_bit mmc_core ghash_clmulni_intel drm_kms_helper cec serio_raw drm e1000e wmi video fuse
CPU: 3 PID: 27309 Comm: kworker/3:2 Tainted: P        W  OE     5.8.18-100.fc31.x86_64 #1
Hardware name: Dell Inc. Latitude E6430/0H3MT5, BIOS A07 10/08/2012
Workqueue: events_freezable ieee80211_restart_work [mac80211]
RIP: 0010:drv_stop+0xf3/0x100 [mac80211]
Code: 7b 0c 00 48 85 ed 74 1d 48 8b 45 00 48 8b 7d 08 48 83 c5 18 48 89 de e8 1b 48 33 c8 48 8b 45 00 48 85 c0 75 e7 e9 46 ff ff ff <0f> 0b 5b 5d c3 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 41 55 41 54
RSP: 0018:ffffaafd00ed7c98 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff97a19efd87e0 RCX: 0000000000000000
RDX: ffff97a19d9c26c0 RSI: 0000000000000282 RDI: ffff97a19efd87e0
RBP: ffff97a19efd9930 R08: ffff97a1a5010c00 R09: ffff97a1a4c016d0
R10: ffff97a1a4c01738 R11: 0000000000000000 R12: ffff97a19efd87e0
R13: ffff97a19efd9000 R14: ffff97a19efd8ca0 R15: ffff97a1a4b4d4d8
FS:  0000000000000000(0000) GS:ffff97a1a6380000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9193dc1ff8 CR3: 0000000083a0a003 CR4: 00000000001606e0
Call Trace:
 ieee80211_do_stop+0x54d/0x850 [mac80211]
 ? dev_deactivate_many+0x298/0x2d0
 ieee80211_stop+0x16/0x20 [mac80211]
 __dev_close_many+0x8e/0xf0
 dev_close_many+0x81/0x120
 dev_close.part.0+0x4e/0x80
 cfg80211_shutdown_all_interfaces+0x71/0xd0 [cfg80211]
 ieee80211_reconfig+0x92/0x1450 [mac80211]
 ? rcu_exp_wait_wake+0x340/0x340
 ? finish_wait+0x80/0x80
 ieee80211_restart_work+0xb7/0xe0 [mac80211]
 process_one_work+0x1b4/0x370
 worker_thread+0x50/0x3b0
 ? process_one_work+0x370/0x370
 kthread+0xfe/0x140
 ? kthread_park+0x90/0x90
 ret_from_fork+0x22/0x30