Backtrace

WARNING: CPU: 1 PID: 90329 at net/mac80211/scan.c:411 __ieee80211_scan_completed+0x313/0x320 [mac80211]
Modules linked in: uinput rfcomm snd_seq_dummy snd_hrtimer xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nf_nat_tftp nf_conntrack_tftp bridge stp llc ccm nft_objref nf_conntrack_netbios_ns nf_conntrack_broadcast nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nft_chain_nat ip6table_nat ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 iptable_mangle iptable_raw iptable_security ip_set nf_tables nfnetlink ip6table_filter ip6_tables iptable_filter cmac bnep snd_soc_skl snd_soc_hdac_hda snd_hda_ext_core snd_soc_sst_ipc snd_hda_codec_hdmi snd_soc_sst_dsp snd_soc_acpi_intel_match snd_soc_acpi snd_soc_core snd_hda_codec_realtek snd_hda_codec_generic snd_compress snd_pcm_dmaengine ac97_bus sunrpc mei_hdcp snd_hda_intel iTCO_wdt mei_wdt intel_pmc_bxt snd_intel_dspcfg iTCO_vendor_support snd_intel_sdw_acpi snd_hda_codec iwlmvm mac80211 x86_pkg_temp_thermal
 intel_powerclamp vfat coretemp intel_rapl_msr libarc4 fat kvm_intel kvm snd_hda_core iwlwifi dell_laptop snd_hwdep ledtrig_audio dell_smm_hwmon snd_seq irqbypass snd_seq_device cfg80211 snd_pcm btusb rapl btrtl intel_cstate btbcm btintel dell_wmi bluetooth intel_uncore dell_smbios dcdbas intel_wmi_thunderbolt pcspkr wmi_bmof dell_wmi_descriptor snd_timer mei_me snd soundcore i2c_i801 mei i2c_smbus ecdh_generic rfkill ipu3_cio2 ecc idma64 joydev videobuf2_dma_sg videobuf2_memops videobuf2_v4l2 videobuf2_common hid_sensor_rotation hid_sensor_incl_3d hid_sensor_magn_3d hid_sensor_gyro_3d intel_pch_thermal hid_sensor_accel_3d hid_sensor_trigger hid_sensor_iio_common industrialio_triggered_buffer kfifo_buf processor_thermal_device processor_thermal_rfim processor_thermal_mbox processor_thermal_rapl industrialio intel_rapl_common intel_xhci_usb_role_switch intel_soc_dts_iosf intel_hid ov5670 intel_vbtn v4l2_fwnode sparse_keymap soc_button_array int3403_thermal videodev mc
 int3402_thermal int3400_thermal acpi_pad int3406_thermal int340x_thermal_zone acpi_thermal_rel zram ip_tables hid_sensor_hub intel_ishtp_loader intel_ishtp_hid i915 wacom rtsx_pci_sdmmc mmc_core crct10dif_pclmul i2c_algo_bit crc32_pclmul crc32c_intel drm_kms_helper cec ghash_clmulni_intel drm serio_raw rtsx_pci hid_multitouch intel_ish_ipc intel_ishtp wmi i2c_hid_acpi i2c_hid video pinctrl_sunrisepoint fuse
CPU: 1 PID: 90329 Comm: kworker/u8:18 Tainted: G          I       5.12.10-300.fc34.x86_64 #1
Hardware name: Dell Inc. Latitude 7275/00G9K3, BIOS 1.1.27 02/08/2017
Workqueue: phy0 ieee80211_scan_work [mac80211]
RIP: 0010:__ieee80211_scan_completed+0x313/0x320 [mac80211]
Code: 0f a3 05 b0 6f c6 cb 0f 83 e4 fe ff ff 48 8b 05 23 2e 0d 00 48 85 c0 74 0c 48 8b 78 08 48 89 ee e8 02 5d 03 00 e9 c7 fe ff ff <0f> 0b 5b 5d 41 5c 41 5d 41 5e c3 66 90 0f 1f 44 00 00 48 85 f6 74
RSP: 0018:ffffaa7b84787e08 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff9e89c0050c20
RDX: ffff9e8b629c5000 RSI: 0000000000000001 RDI: ffff9e89d6bb0820
RBP: ffff9e89d6bb0820 R08: ffff9e89c0050c20 R09: ffff9e8b1b24a5ac
R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000000 R15: ffff9e89d6bb0820
FS:  0000000000000000(0000) GS:ffff9e8b77e80000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6d3a438a78 CR3: 000000019209e006 CR4: 00000000003706e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ieee80211_scan_work+0x106/0x510 [mac80211]
 process_one_work+0x1ec/0x380
 worker_thread+0x53/0x3e0
 ? process_one_work+0x380/0x380
 kthread+0x11b/0x140
 ? kthread_associate_blkcg+0xa0/0xa0
 ret_from_fork+0x22/0x30