Backtrace

WARNING: CPU: 3 PID: 0 at kernel/workqueue.c:1474 __queue_work+0x33f/0x3e0
Modules linked in: cdc_acm uinput rfcomm xt_CHECKSUM xt_MASQUERADE nf_nat_tftp nf_conntrack_tftp tun bridge stp llc rpcsec_gss_krb5 nfsv4 dns_resolver nfs lockd grace fscache 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 ip_set nfnetlink ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter cmac bnep intel_rapl_msr intel_rapl_common x86_pkg_temp_thermal intel_powerclamp iTCO_wdt coretemp mei_hdcp kvm_intel mei_wdt snd_hda_codec_hdmi snd_hda_codec_realtek intel_pmc_bxt snd_hda_codec_generic iTCO_vendor_support at24 ledtrig_audio snd_hda_intel snd_intel_dspcfg kvm snd_hda_codec dcdbas snd_hda_core snd_hwdep snd_seq btusb btrtl btbcm snd_seq_device btintel snd_pcm bluetooth irqbypass rapl
 intel_cstate ecdh_generic rfkill intel_uncore snd_timer mei_me ecc i2c_i801 pcspkr i2c_smbus snd mei soundcore lpc_ich auth_rpcgss sunrpc ip_tables i915 i2c_algo_bit drm_kms_helper cec drm crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel serio_raw e1000e video fuse
CPU: 3 PID: 0 Comm: swapper/3 Not tainted 5.8.18-100.fc31.x86_64 #1
Hardware name: Dell Inc. OptiPlex 990/0D6H9T, BIOS A19 08/26/2015
RIP: 0010:__queue_work+0x33f/0x3e0
Code: e2 f1 79 a9 00 01 ff 00 75 0f 65 48 8b 3c 25 c0 7b 01 00 f6 47 24 20 75 25 0f 0b 48 83 c4 10 5b 5d 41 5c 41 5d 41 5e 41 5f c3 <0f> 0b e9 fe fd ff ff 41 83 cd 02 48 8d 53 60 e9 e3 fd ff ff e8 a8
RSP: 0018:ffffbc6ac0188e90 EFLAGS: 00010093
RAX: ffff979329dae798 RBX: ffff97935daef700 RCX: 0000000000000000
RDX: ffff979329dae790 RSI: 0000000000000006 RDI: ffff97935dae9c40
RBP: ffff979329dae790 R08: ffff97935dae9c40 R09: ffff97935b802fe8
R10: ffff97935b803040 R11: 0000000000000000 R12: 0000000000000012
R13: 0000000000000003 R14: 0000000000002000 R15: ffff97935bc18e00
FS:  0000000000000000(0000) GS:ffff97935dac0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00003db9085f8000 CR3: 0000000269a0a004 CR4: 00000000000606e0
Call Trace:
 <IRQ>
 queue_work_on+0x36/0x40
 __usb_hcd_giveback_urb+0x6f/0x120
 usb_giveback_urb_bh+0xa0/0xf0
 tasklet_action_common.isra.0+0x5b/0x100
 __do_softirq+0xee/0x2ff
 asm_call_irq_on_stack+0x12/0x20
 </IRQ>
 do_softirq_own_stack+0x37/0x40
 irq_exit_rcu+0xd8/0xe0
 common_interrupt+0x75/0x150
 asm_common_interrupt+0x1e/0x40
RIP: 0010:cpuidle_enter_state+0xc6/0x3e0
Code: 90 31 ff e8 0c f5 7d ff 80 7c 24 0f 00 74 17 9c 58 66 66 90 66 90 f6 c4 02 0f 85 e5 02 00 00 31 ff e8 4e 4b 84 ff fb 66 66 90 <66> 66 90 45 85 ed 0f 88 3b 02 00 00 49 63 d5 4c 2b 64 24 10 48 8d
RSP: 0018:ffffbc6ac009be78 EFLAGS: 00000246
RAX: ffff97935daea2c0 RBX: ffff97935daf5000 RCX: 000000000000001f
RDX: 0000000000000000 RSI: 000000002962566a RDI: 0000000000000000
RBP: ffffffff87b6f540 R08: 000ca1098ece49d1 R09: 00000000000003ef
R10: 000000000000003a R11: ffff97935dae90e4 R12: 000ca1098ece49d1
R13: 0000000000000002 R14: 0000000000000002 R15: ffff97935b7e4d80
 ? cpuidle_enter_state+0xa4/0x3e0
 cpuidle_enter+0x29/0x40
 do_idle+0x1c0/0x260
 cpu_startup_entry+0x19/0x20
 start_secondary+0x144/0x170
 secondary_startup_64+0xb6/0xc0