BTRFS info (device loop3): at unmount dio bytes count 8192
------------[ cut here ]------------
WARNING: CPU: 0 PID: 10766 at fs/btrfs/block-group.c:142 btrfs_put_block_group+0x215/0x270
Modules linked in:
CPU: 0 PID: 10766 Comm: syz-executor.3 Not tainted 5.15.155-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:btrfs_put_block_group+0x215/0x270 fs/btrfs/block-group.c:142
Code: da 46 fe e8 6d b6 fd fd 0f 0b e9 83 fe ff ff e8 61 b6 fd fd 48 89 df be 03 00 00 00 5b 41 5e 5d e9 80 1f 86 00 e8 4b b6 fd fd <0f> 0b e9 49 ff ff ff e8 3f b6 fd fd 0f 0b 4c 89 f0 48 c1 e8 03 80
RSP: 0018:ffffc90002f57c00 EFLAGS: 00010293
RAX: ffffffff8382a695 RBX: 0000000000002000 RCX: ffff888053ee9dc0
RDX: 0000000000000000 RSI: 0000000000002000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff8382a5d7 R09: ffffed100ef3d33b
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff88807dfa3800 R14: ffff88807dfa3800 R15: 1ffff1100fbf4729
FS:  00005555574ff480(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c0012ff000 CR3: 0000000056684000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 btrfs_free_block_groups+0x7e7/0xc90 fs/btrfs/block-group.c:3960
 close_ctree+0x6d6/0x890 fs/btrfs/disk-io.c:4508
 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:181
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x5d/0x240 kernel/entry/common.c:307
 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f918fd41197
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:00007ffed16c7f38 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f918fd41197
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffed16c7ff0
RBP: 00007ffed16c7ff0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffed16c90b0
R13: 00007f918fd8b3b9 R14: 000000000005f8a9 R15: 0000000000000018
 </TASK>