Backtrace

WARNING: CPU: 1 PID: 3404 at fs/btrfs/block-group.c:125 btrfs_put_block_group+0x6b/0xa0
Modules linked in: uinput rfcomm xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nf_nat_tftp nf_conntrack_tftp tun 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 ip_set nf_tables nfnetlink ip6table_filter ip6_tables iptable_filter cmac bnep sunrpc nls_utf8 hfsplus intel_rapl_msr intel_rapl_common x86_pkg_temp_thermal intel_powerclamp coretemp mei_hdcp kvm_intel snd_hda_codec_cirrus snd_hda_codec_generic ledtrig_audio snd_hda_codec_hdmi iTCO_wdt intel_pmc_bxt iTCO_vendor_support snd_hda_intel joydev snd_intel_dspcfg soundwire_intel soundwire_generic_allocation wl(POE) snd_soc_core btusb kvm btrtl btbcm btintel bluetooth applesmc irqbypass cfg80211 rapl intel_cstate
 snd_compress intel_uncore snd_pcm_dmaengine soundwire_cadence snd_hda_codec snd_hda_core ecdh_generic ac97_bus ecc ses snd_hwdep pcspkr thunderbolt snd_seq snd_seq_device enclosure snd_pcm scsi_transport_sas mei_me lpc_ich i2c_i801 i2c_smbus intel_pch_thermal mei rfkill bcm5974 apple_mfi_fastcharge spi_pxa2xx_pci snd_timer snd soundcore sbs acpi_als kfifo_buf spi_pxa2xx_platform sbshc dw_dmac industrialio apple_bl binfmt_misc zram ip_tables i915 crct10dif_pclmul crc32_pclmul crc32c_intel i2c_algo_bit drm_kms_helper ghash_clmulni_intel cec drm applespi video uas usb_storage hid_apple fuse
CPU: 1 PID: 3404 Comm: umount Tainted: P        W  OE     5.10.13-200.fc33.x86_64 #1
Hardware name: Apple Inc. MacBookAir7,2/Mac-937CB26E2E02BB01, BIOS MBA71.88Z.0166.B12.1602221953 02/22/2016
RIP: 0010:btrfs_put_block_group+0x6b/0xa0
Code: 2d 48 8b 85 00 02 00 00 48 85 c0 75 15 48 8b bd c0 00 00 00 e8 36 ce dc ff 48 89 ef 5d e9 2d ce dc ff 0f 0b eb e7 0f 0b eb bd <0f> 0b eb c0 0f 0b 48 8b 45 00 48 89 ee 48 8d b8 40 08 00 00 e8 2c
RSP: 0018:ffffb35401087df0 EFLAGS: 00010206
RAX: 0000000000000001 RBX: ffff8a34c4d2f000 RCX: cccccccccccccccd
RDX: 0000000080000000 RSI: ffff8a3513d00e40 RDI: ffff8a34e84be400
RBP: ffff8a34e84be400 R08: 0000000000000000 R09: fffff2ee85595908
R10: 000000000013981e R11: 00000000000303c0 R12: ffff8a34e84be400
R13: ffff8a34c4d2f098 R14: ffff8a34e84be4c8 R15: dead000000000100
FS:  00007f511f756c40(0000) GS:ffff8a3626c80000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e6ec87e6a0 CR3: 00000001baf16004 CR4: 00000000003706e0
Call Trace:
 btrfs_free_block_groups+0x147/0x2b0
 close_ctree+0x274/0x2a0
 ? fsnotify_grab_connector+0x4a/0x90
 ? fsnotify_destroy_marks+0x13/0xe0
 generic_shutdown_super+0x6c/0x100
 kill_anon_super+0x14/0x30
 btrfs_kill_super+0x12/0x20
 deactivate_locked_super+0x36/0xa0
 cleanup_mnt+0x12d/0x190
 task_work_run+0x65/0xa0
 exit_to_user_mode_prepare+0x120/0x140
 syscall_exit_to_user_mode+0x2d/0x190
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f511f988b8b
Code: 22 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 22 0c 00 f7 d8
RSP: 002b:00007ffff2751d68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 000055847893ff70 RCX: 00007f511f988b8b
RDX: 000000000000001b RSI: 0000000000000000 RDI: 000055847893ff20
RBP: 000055847893a460 R08: 0000000000000000 R09: 00007f511fa4ba60
R10: 0000558478940a10 R11: 0000000000000246 R12: 0000000000000000
R13: 000055847893ff20 R14: 000055847893a570 R15: 000055847893a460