Backtrace

WARNING: CPU: 3 PID: 2725 at fs/btrfs/transaction.c:130 btrfs_put_transaction+0x11f/0x130
Modules linked in: uinput nls_utf8 isofs vfat fat rfcomm snd_seq_dummy snd_hrtimer xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nf_nat_tftp nf_conntrack_tftp bridge stp llc 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 hid_sony ff_memless ip_set nf_tables nfnetlink ip6table_filter ip6_tables iptable_filter vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) bnep sunrpc intel_rapl_msr intel_rapl_common iwldvm mac80211 uvcvideo snd_hda_codec_idt x86_pkg_temp_thermal snd_hda_codec_generic intel_powerclamp dell_rbtn coretemp mei_hdcp mei_wdt kvm_intel videobuf2_vmalloc libarc4 dell_laptop snd_hda_intel ledtrig_audio ppdev at24 snd_intel_dspcfg iTCO_wdt videobuf2_memops
 snd_intel_sdw_acpi dell_smm_hwmon videobuf2_v4l2 intel_pmc_bxt iTCO_vendor_support iwlwifi videobuf2_common kvm snd_hda_codec btusb snd_hda_core btrtl videodev btbcm snd_hwdep snd_seq btintel snd_seq_device irqbypass snd_pcm rapl intel_cstate bluetooth intel_uncore dell_wmi mc cfg80211 dell_smbios cdc_acm dcdbas snd_timer i2c_i801 snd joydev sparse_keymap pcspkr parport_pc wmi_bmof mei_me i2c_smbus dell_wmi_descriptor mei lpc_ich rfkill soundcore parport dell_smo8800 zram ip_tables i915 cdc_mbim crct10dif_pclmul i2c_algo_bit crc32_pclmul drm_kms_helper crc32c_intel ghash_clmulni_intel cec sdhci_pci cqhci serio_raw cdc_ncm sdhci drm cdc_ether cdc_wdm usbnet uas mii firewire_ohci e1000e usb_storage mmc_core firewire_core crc_itu_t wmi video fuse
CPU: 3 PID: 2725 Comm: umount Tainted: G           OE     5.13.5-200.fc34.x86_64 #1
Hardware name: Dell Inc. Precision M6600/04YY4M, BIOS A07 10/18/2011
RIP: 0010:btrfs_put_transaction+0x11f/0x130
Code: 5d e9 15 8c e5 ff 0f 0b 5b be 03 00 00 00 5d 41 5c 41 5d e9 93 66 18 00 0f 0b e9 05 ff ff ff 0f 0b eb d5 0f 0b e9 3d ff ff ff <0f> 0b e9 46 ff ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00
RSP: 0000:ffffa7e4c87ebdc0 EFLAGS: 00010282
RAX: ffff9b9e1c155380 RBX: ffff9b9e08e8d460 RCX: 0000000000000000
RDX: ffff9b9e11288828 RSI: 0000000000000296 RDI: ffff9b9e11288810
RBP: ffff9b9e11288800 R08: ffff9b9e11288870 R09: ffffa7e4c87ebd88
R10: 000000000000001c R11: ffff9b9e07360920 R12: ffff9b9e11288800
R13: ffff9b9e08e8d000 R14: 00000000fffffffb R15: ffff9b9d8742a8a8
FS:  00007f1b799acc40(0000) GS:ffff9ba48dac0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fecf4ffad48 CR3: 000000019c0b4003 CR4: 00000000000606e0
Call Trace:
 btrfs_commit_transaction.cold+0x199/0x2bf
 ? btrfs_attach_transaction_barrier+0x1f/0x50
 sync_filesystem+0x74/0x90
 generic_shutdown_super+0x22/0x110
 kill_anon_super+0x14/0x30
 btrfs_kill_super+0x12/0x20
 deactivate_locked_super+0x36/0xa0
 cleanup_mnt+0x131/0x190
 task_work_run+0x65/0xa0
 exit_to_user_mode_prepare+0x237/0x240
 syscall_exit_to_user_mode+0x18/0x40
 do_syscall_64+0x4d/0x80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f1b79bdb38b
Code: 2a 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 90 f3 0f 1e fa 31 f6 e9 05 00 00 00 0f 1f 44 00 00 f3 0f 1e fa b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 05 c3 0f 1f 40 00 48 8b 15 b9 2a 0c 00 f7 d8
RSP: 002b:00007ffc110307c8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 000055da76876eb0 RCX: 00007f1b79bdb38b
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 000055da76871690
RBP: 000055da76871460 R08: 0000000000000000 R09: 00007f1b79c9ea60
R10: 000055da76876ca0 R11: 0000000000000202 R12: 0000000000000002
R13: 000055da76871690 R14: 000055da76871570 R15: 000055da76871460