Backtrace

WARNING: CPU: 0 PID: 0 at lib/refcount.c:28 refcount_warn_saturate+0xa6/0xf0
Modules linked in: 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 ccm 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 vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) cmac bnep sunrpc uvcvideo videobuf2_vmalloc btusb videobuf2_memops btrtl videobuf2_v4l2 btbcm videobuf2_common btintel videodev bluetooth mc ecdh_generic ecc intel_rapl_msr intel_rapl_common snd_hda_codec_hdmi x86_pkg_temp_thermal intel_powerclamp coretemp snd_hda_codec_conexant snd_hda_codec_generic snd_hda_intel kvm_intel snd_intel_dspcfg snd_hda_codec kvm snd_hda_core iwldvm snd_hwdep irqbypass mac80211 iTCO_wdt snd_seq mei_hdcp at24 snd_seq_device intel_pmc_bxt snd_pcm thinkpad_acpi mei_wdt pktcdvd
 iTCO_vendor_support libarc4 snd_timer rapl intel_cstate intel_uncore pcspkr ledtrig_audio snd iwlwifi wmi_bmof joydev cfg80211 soundcore mei_me mei lpc_ich rfkill i2c_i801 i2c_smbus zram ip_tables i915 hid_logitech_hidpp i2c_algo_bit drm_kms_helper sdhci_pci crct10dif_pclmul crc32_pclmul crc32c_intel cqhci sdhci ghash_clmulni_intel cec serio_raw mmc_core uas usb_storage firewire_ohci drm e1000e firewire_core crc_itu_t wmi video hid_logitech_dj fuse
CPU: 0 PID: 0 Comm: swapper/0 Tainted: G           OE     5.9.16-200.fc33.x86_64 #1
Hardware name: LENOVO 4178AFU/4178AFU, BIOS 83ET69WW (1.39 ) 03/26/2012
RIP: 0010:refcount_warn_saturate+0xa6/0xf0
Code: 05 89 05 65 01 01 e8 8e c8 54 00 0f 0b c3 80 3d 77 05 65 01 00 75 95 48 c7 c7 60 97 3e 84 c6 05 67 05 65 01 01 e8 6f c8 54 00 <0f> 0b c3 80 3d 56 05 65 01 00 0f 85 72 ff ff ff 48 c7 c7 b8 97 3e
RSP: 0018:ffffc17f80003ef0 EFLAGS: 00010286
RAX: 0000000000000026 RBX: ffff9f05503cce18 RCX: ffff9f0556418d08
RDX: 00000000ffffffd8 RSI: 0000000000000027 RDI: ffff9f0556418d00
RBP: ffff9f05503ccd80 R08: 000000000000046d R09: 0000000000000003
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: ffffffff84a18840 R15: ffff9f055642b110
FS:  0000000000000000(0000) GS:ffff9f0556400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f599d9d6140 CR3: 0000000072a0e001 CR4: 00000000000606f0
Call Trace:
 <IRQ>
 put_cred_rcu+0x30/0xa0
 rcu_do_batch+0x191/0x3e0
 rcu_core+0x189/0x2e0
 __do_softirq+0xd9/0x2c8
 asm_call_irq_on_stack+0x12/0x20
 </IRQ>
 do_softirq_own_stack+0x37/0x40
 irq_exit_rcu+0xc2/0x100
 sysvec_apic_timer_interrupt+0x36/0x80
 asm_sysvec_apic_timer_interrupt+0x12/0x20
RIP: 0010:cpuidle_enter_state+0xc9/0x3a0
Code: 65 8b 3d 8a bb 6f 7c e8 f5 46 7f ff 49 89 c7 66 66 66 66 90 31 ff e8 26 5f 7f ff 80 7c 24 0f 00 0f 85 3e 01 00 00 fb 66 66 90 <66> 66 90 45 85 e4 0f 88 4a 01 00 00 49 63 d4 4c 2b 3c 24 48 8d 04
RSP: 0018:ffffffff84a03e60 EFLAGS: 00000246
RAX: ffff9f055642a380 RBX: ffff9f0556435000 RCX: 000000000000001f
RDX: 0000000000000000 RSI: 000000002f8fb352 RDI: 0000000000000000
RBP: ffffffff84b72f40 R08: 0000002b0e2f7d0a R09: 0000000000000008
R10: 000000000000038e R11: 000000000000037c R12: 0000000000000003
R13: ffffffff84b73090 R14: 0000000000000003 R15: 0000002b0e2f7d0a
 cpuidle_enter+0x29/0x40
 do_idle+0x1cb/0x270
 cpu_startup_entry+0x19/0x20
 start_kernel+0x800/0x810
 ? apply_microcode_early.cold+0xa/0x23
 secondary_startup_64+0xb6/0xc0