------------[ cut here ]------------
WARNING: CPU: 1 PID: 3558 at fs/btrfs/block-group.c:142 btrfs_put_block_group+0x215/0x270
Modules linked in:
CPU: 1 PID: 3558 Comm: syz-executor.2 Not tainted 5.15.131-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
RIP: 0010:btrfs_put_block_group+0x215/0x270 fs/btrfs/block-group.c:142
Code: 62 48 fe e8 0d 61 ff fd 0f 0b e9 83 fe ff ff e8 01 61 ff fd 48 89 df be 03 00 00 00 5b 41 5e 5d e9 30 0c 86 00 e8 eb 60 ff fd <0f> 0b e9 49 ff ff ff e8 df 60 ff fd 0f 0b 4c 89 f0 48 c1 e8 03 80
RSP: 0018:ffffc90004297c00 EFLAGS: 00010293
RAX: ffffffff8380bc75 RBX: 0000000000003000 RCX: ffff888022a2bb80
RDX: 0000000000000000 RSI: 0000000000003000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff8380bbb7 R09: ffffed10037f333b
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff88807e7f3000 R14: ffff88807e7f3000 R15: 1ffff1100fcfe629
FS:  0000555555ce4480(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200bd038 CR3: 0000000091141000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 btrfs_free_block_groups+0x7e7/0xc90 fs/btrfs/block-group.c:3960
 close_ctree+0x6d6/0x886 fs/btrfs/disk-io.c:4499
 generic_shutdown_super+0x136/0x2c0 fs/super.c:475
 kill_anon_super+0x37/0x60 fs/super.c:1076
 btrfs_kill_super+0x3d/0x50 fs/btrfs/super.c:2391
 deactivate_locked_super+0xa0/0x110 fs/super.c:335
 cleanup_mnt+0x44e/0x500 fs/namespace.c:1143
 task_work_run+0x129/0x1a0 kernel/task_work.c:164
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop+0x106/0x130 kernel/entry/common.c:175
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:208
 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline]
 syscall_exit_to_user_mode+0x5d/0x250 kernel/entry/common.c:301
 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f84805fce17
Code: b0 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b0 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffe928181e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f84805fce17
RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007ffe928182a0
RBP: 00007ffe928182a0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffe92819360
R13: 00007f84806463b9 R14: 000000000006019e R15: 0000000000000003
 </TASK>