Backtrace

NETDEV WATCHDOG: enp0s20f0u1 (cdc_ether): transmit queue 0 timed out
WARNING: CPU: 0 PID: 0 at net/sched/sch_generic.c:442 dev_watchdog+0x24d/0x260
Modules linked in: nls_utf8 isofs cdc_ether usbnet mii uas usb_storage ftdi_sio uinput snd_seq_dummy snd_hrtimer xt_MASQUERADE xt_conntrack xt_CHECKSUM ipt_REJECT nf_nat_tftp nf_conntrack_tftp bridge stp llc nf_nat_ftp nf_conntrack_ftp 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 nf_tables ebtable_nat ebtable_broute 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 nfnetlink ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter sunrpc vfat fat iwlmvm mac80211 x86_pkg_temp_thermal intel_powerclamp coretemp intel_rapl_msr kvm_intel mei_hdcp snd_soc_skl snd_soc_hdac_hda snd_hda_ext_core snd_soc_sst_ipc ee1004 iTCO_wdt intel_pmc_bxt iTCO_vendor_support snd_soc_sst_dsp snd_soc_acpi_intel_match snd_soc_acpi
 libarc4 snd_hda_codec_hdmi dell_laptop dell_smm_hwmon snd_soc_core iwlwifi snd_compress kvm snd_hda_codec_realtek cfg80211 snd_pcm_dmaengine snd_hda_codec_generic ac97_bus ledtrig_audio snd_hda_intel rtsx_usb_ms irqbypass rapl intel_cstate intel_uncore snd_intel_dspcfg snd_intel_sdw_acpi memstick snd_hda_codec pcspkr snd_hda_core dell_wmi snd_hwdep dell_smbios snd_seq dcdbas btusb btrtl snd_seq_device btbcm btintel snd_pcm dell_wmi_descriptor sparse_keymap bluetooth wmi_bmof snd_timer snd i2c_i801 soundcore i2c_smbus processor_thermal_device processor_thermal_rfim processor_thermal_mbox mei_me ecdh_generic processor_thermal_rapl ecc joydev mei intel_xhci_usb_role_switch intel_rapl_common intel_soc_dts_iosf intel_pch_thermal idma64 int3403_thermal dell_rbtn int3402_thermal rfkill int340x_thermal_zone int3400_thermal acpi_pad acpi_thermal_rel zram ip_tables i915 nouveau rtsx_usb_sdmmc mmc_core hid_multitouch drm_ttm_helper ttm mxm_wmi i2c_algo_bit crct10dif_pclmul
 crc32_pclmul drm_kms_helper crc32c_intel cec ghash_clmulni_intel drm r8169 serio_raw rtsx_usb i2c_hid_acpi i2c_hid wmi video pinctrl_sunrisepoint fuse
CPU: 0 PID: 0 Comm: swapper/0 Tainted: G          I       5.12.8-300.fc34.x86_64 #1
Hardware name: Dell Inc. Inspiron 7460/0TGXC1, BIOS 1.1.1 02/14/2017
RIP: 0010:dev_watchdog+0x24d/0x260
Code: 99 99 fd ff eb a9 4c 89 f7 c6 05 fb 12 2f 01 01 e8 a8 73 fa ff 44 89 e9 4c 89 f6 48 c7 c7 50 3a 49 99 48 89 c2 e8 40 65 16 00 <0f> 0b eb 8a 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 0f 1f 44
RSP: 0018:ffff9fd540003eb0 EFLAGS: 00010282
RAX: 0000000000000044 RBX: ffff936c03790800 RCX: 0000000000000027
RDX: ffff936eaf4185c8 RSI: 0000000000000001 RDI: ffff936eaf4185c0
RBP: ffff936b557ac3dc R08: 0000000000000000 R09: ffff9fd540003ce0
R10: ffff9fd540003cd8 R11: ffffffff99b45f28 R12: ffff936b557ac480
R13: 0000000000000000 R14: ffff936b557ac000 R15: ffff936c03790880
FS:  0000000000000000(0000) GS:ffff936eaf400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f71f60db000 CR3: 0000000146a10003 CR4: 00000000003706f0
Call Trace:
 <IRQ>
 ? pfifo_fast_enqueue+0x150/0x150
 call_timer_fn+0x29/0xf0
 __run_timers.part.0+0x1b1/0x210
 ? __hrtimer_run_queues+0x149/0x250
 ? recalibrate_cpu_khz+0x10/0x10
 ? ktime_get+0x38/0x90
 ? sched_clock+0x5/0x10
 run_timer_softirq+0x26/0x50
 __do_softirq+0xd0/0x28f
 __irq_exit_rcu+0xbf/0x100
 sysvec_apic_timer_interrupt+0x72/0x90
 </IRQ>
 asm_sysvec_apic_timer_interrupt+0x12/0x20
RIP: 0010:cpuidle_enter_state+0xc7/0x350
Code: 8b 3d 25 e5 6a 67 e8 d8 01 7b ff 49 89 c5 0f 1f 44 00 00 31 ff e8 19 1a 7b ff 45 84 ff 0f 85 fa 00 00 00 fb 66 0f 1f 44 00 00 <45> 85 f6 0f 88 06 01 00 00 49 63 d6 4c 2b 2c 24 48 8d 04 52 48 8d
RSP: 0018:ffffffff99a03e68 EFLAGS: 00000246
RAX: ffff936eaf42a3c0 RBX: 0000000000000004 RCX: 000000000000001f
RDX: 0000000000000000 RSI: 000000002c13b62a RDI: 0000000000000000
RBP: ffff936eaf435b00 R08: 0000193c4a605b31 R09: 0000000000000018
R10: 000000000000081d R11: 00000000000002eb R12: ffffffff99c58ec0
R13: 0000193c4a605b31 R14: 0000000000000004 R15: 0000000000000000
 ? cpuidle_enter_state+0xb7/0x350
 cpuidle_enter+0x29/0x40
 do_idle+0x1c7/0x270
 cpu_startup_entry+0x19/0x20
 start_kernel+0x82a/0x83a
 ? apply_microcode_early.cold+0x8/0x1d
 secondary_startup_64_no_verify+0xc2/0xcb