BTRFS info (device loop0): last unmount of filesystem 3a375e4e-b156-4d76-a2ad-16e198ce1409
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WARNING: fs/btrfs/space-info.h:275 at btrfs_space_info_update_bytes_may_use+0x318/0x650 fs/btrfs/space-info.h:275, CPU#0: syz.0.0/5337
Modules linked in:
CPU: 0 UID: 0 PID: 5337 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:btrfs_space_info_update_bytes_may_use+0x318/0x650 fs/btrfs/space-info.h:275
Code: 00 00 74 08 4c 89 ff e8 16 e7 1b fe 4d 8b 27 4c 89 e7 48 8b 6c 24 18 48 89 ee e8 63 05 af fd 49 39 ec 73 1c e8 f9 02 af fd 90 <0f> 0b 90 31 db 43 80 7c 35 00 00 0f 85 48 ff ff ff e9 4b ff ff ff
RSP: 0018:ffffc9000c837890 EFLAGS: 00010293
RAX: ffffffff8416c317 RBX: ffffffffffebf000 RCX: ffff888037ca2540
RDX: 0000000000000000 RSI: 0000000000141000 RDI: 0000000000140000
RBP: 0000000000141000 R08: ffffffff90304cf7 R09: 1ffffffff206099e
R10: dffffc0000000000 R11: fffffbfff206099f R12: 0000000000140000
R13: 1ffff11008211410 R14: dffffc0000000000 R15: ffff88804108a080
FS:  0000000000000000(0000) GS:ffff88808c891000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f000545ffe8 CR3: 0000000044112000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 btrfs_space_info_free_bytes_may_use fs/btrfs/space-info.h:312 [inline]
 block_rsv_release_bytes fs/btrfs/block-rsv.c:153 [inline]
 btrfs_block_rsv_release+0x47b/0x590 fs/btrfs/block-rsv.c:291
 btrfs_release_global_block_rsv+0x33/0x300 fs/btrfs/block-rsv.c:462
 btrfs_free_block_groups+0xdf0/0x1090 fs/btrfs/block-group.c:4749
 close_ctree+0x7f3/0x12d0 fs/btrfs/disk-io.c:4458
 generic_shutdown_super+0x13d/0x2d0 fs/super.c:646
 kill_anon_super+0x3b/0x70 fs/super.c:1292
 btrfs_kill_super+0x41/0x50 fs/btrfs/super.c:2127
 deactivate_locked_super+0xbc/0x130 fs/super.c:476
 cleanup_mnt+0x437/0x4d0 fs/namespace.c:1312
 task_work_run+0x1d9/0x270 kernel/task_work.c:233
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0x70f/0x22c0 kernel/exit.c:976
 do_group_exit+0x21b/0x2d0 kernel/exit.c:1119
 __do_sys_exit_group kernel/exit.c:1130 [inline]
 __se_sys_exit_group kernel/exit.c:1128 [inline]
 __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1128
 x64_sys_call+0x221a/0x2240 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f000459ce59
Code: Unable to access opcode bytes at 0x7f000459ce2f.
RSP: 002b:00007ffd0a96c848 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f000459ce59
RDX: 00005555899b1848 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000003 R08: 0000000000000000 R09: 00007f00047e73e0
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f00047e73e0 R14: 0000000000000003 R15: 00007ffd0a96c900
 </TASK>