Backtrace

WARNING: CPU: 2 PID: 544 at lib/refcount.c:28 refcount_warn_saturate+0xa6/0xf0
Modules linked in: vfat fat snd_seq_midi snd_seq_midi_event snd_usb_audio uas snd_usbmidi_lib snd_rawmidi mc usb_storage cdc_acm snd_seq_dummy snd_hrtimer hid_logitech_hidpp joydev hid_logitech_dj xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nf_nat_tftp nft_objref nf_conntrack_tftp tun bridge stp llc 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 intel_rapl_msr ath9k iTCO_wdt mei_hdcp mei_wdt intel_rapl_common intel_pmc_bxt at24 iTCO_vendor_support ath9k_common x86_pkg_temp_thermal ath9k_hw intel_powerclamp coretemp ppdev kvm_intel snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio mac80211 kvm
 snd_hda_codec_hdmi snd_hda_intel snd_intel_dspcfg snd_hda_codec ath irqbypass rapl snd_hda_core cfg80211 intel_cstate snd_hwdep intel_uncore snd_seq pcspkr rfkill mxm_wmi snd_seq_device snd_pcm libarc4 i2c_i801 snd_timer i2c_smbus lpc_ich mei_me mei snd soundcore parport_pc parport zram ip_tables amdgpu i915 iommu_v2 gpu_sched i2c_algo_bit ttm drm_kms_helper cec drm crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel r8169 wmi video fuse
CPU: 2 PID: 544 Comm: systemd-udevd Tainted: G        W         5.9.12-200.fc33.x86_64 #1
Hardware name: MSI MS-7823/CSM-H87M-G43 (MS-7823), BIOS V1.6 02/22/2014
RIP: 0010:refcount_warn_saturate+0xa6/0xf0
Code: 05 a9 04 65 01 01 e8 ae c7 54 00 0f 0b c3 80 3d 97 04 65 01 00 75 95 48 c7 c7 68 90 3e 91 c6 05 87 04 65 01 01 e8 8f c7 54 00 <0f> 0b c3 80 3d 76 04 65 01 00 0f 85 72 ff ff ff 48 c7 c7 c0 90 3e
RSP: 0000:ffffc23a00108f20 EFLAGS: 00010282
RAX: 0000000000000026 RBX: ffffa028be9f30d8 RCX: ffffa028deb18d08
RDX: 00000000ffffffd8 RSI: 0000000000000027 RDI: ffffa028deb18d00
RBP: ffffa028dc7d21c8 R08: 0000000000000742 R09: 0000000000000003
R10: 0000000000000000 R11: 0000000000000001 R12: ffffc23a00108f28
R13: ffffa028dc7d21cc R14: ffffa028dc7d21d0 R15: ffffa028be9f30c0
FS:  00007feed51b0380(0000) GS:ffffa028deb00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005614e7782a10 CR3: 0000000418138003 CR4: 00000000001706e0
Call Trace:
 <IRQ>
 usb_giveback_urb_bh+0xa0/0xf0
 tasklet_action_common.constprop.0+0x110/0x130
 __do_softirq+0xd9/0x2c8
 asm_call_irq_on_stack+0x12/0x20
 </IRQ>
 do_softirq_own_stack+0x37/0x40
 irq_exit_rcu+0xc2/0x100
 common_interrupt+0x74/0x130
 asm_common_interrupt+0x1e/0x40
RIP: 0010:do_user_addr_fault+0x161/0x3f0
Code: c5 20 74 30 48 83 c4 18 48 89 f9 4c 89 ea 48 89 ee 5b 4c 89 e7 5d 41 5c 41 5d 41 5e 41 5f e9 c6 fc ff ff fb 66 0f 1f 44 00 00 <bb> 54 02 00 00 e9 52 ff ff ff 48 83 3c 24 00 75 24 65 48 8b 04 25
RSP: 0000:ffffc23a0033fed8 EFLAGS: 00000206
RAX: 0000000080000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 00005614e7782a10 RSI: 0000000000000007 RDI: ffffc23a0033ff58
RBP: 0000000000000007 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffc23a0033ff58
R13: 00005614e7782a10 R14: ffffa028dbded500 R15: 0000000000000000
 exc_page_fault+0x82/0x1a0
 ? asm_exc_page_fault+0x8/0x30
 asm_exc_page_fault+0x1e/0x30
RIP: 0033:0x7feed641e3a0
Code: 84 00 00 00 00 00 0f 1f 40 00 48 85 ff 0f 84 3f 01 00 00 41 54 55 48 89 fd 48 83 ec 08 8b 07 85 c0 0f 84 03 01 00 00 83 e8 01 <89> 07 0f 85 e7 00 00 00 48 8b 7f 08 e8 3f 26 ec ff 48 8b bd e8 00
RSP: 002b:00007ffc687e9ad0 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 00007ffc687e9b30 RCX: 0000000000000007
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00005614e7782a10
RBP: 00005614e7782a10 R08: 00005614e6ea3918 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000000 R15: 00000000ffffffff