------------[ cut here ]------------
WARNING: CPU: 0 PID: 5539 at fs/btrfs/block-group.c:159 btrfs_put_block_group+0x2f8/0x350 fs/btrfs/block-group.c:159
Modules linked in:
CPU: 0 UID: 0 PID: 5539 Comm: syz-executor.3 Not tainted 6.12.0-rc3-syzkaller-g6485cf5ea253 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:btrfs_put_block_group+0x2f8/0x350 fs/btrfs/block-group.c:159
Code: 42 80 3c 20 00 74 08 4c 89 f7 e8 d3 ba 23 fe bf 70 16 00 00 49 03 3e 4c 89 f6 e8 f3 9a 01 00 e9 c1 fe ff ff e8 39 0a ba fd 90 <0f> 0b 90 e9 85 fe ff ff e8 2b 0a ba fd e9 7b fe ff ff e8 21 0a ba
RSP: 0018:ffffc9000334fac8 EFLAGS: 00010293
RAX: ffffffff83dadd17 RBX: 000000000000b000 RCX: ffff8880260d0000
RDX: 0000000000000000 RSI: 000000000000b000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff83dadb97 R09: 1ffff1100fef9350
R10: dffffc0000000000 R11: ffffed100fef9351 R12: dffffc0000000000
R13: 1ffff11005b4412e R14: ffff88802da20800 R15: ffff88807f7c8188
FS:  00005555838b2480(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020010000 CR3: 000000007a96e000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 btrfs_free_block_groups+0xb7a/0x1080 fs/btrfs/block-group.c:4464
 close_ctree+0x772/0xd60 fs/btrfs/disk-io.c:4378
 generic_shutdown_super+0x13b/0x2d0 fs/super.c:642
 kill_anon_super+0x3b/0x70 fs/super.c:1237
 btrfs_kill_super+0x41/0x50 fs/btrfs/super.c:2121
 deactivate_locked_super+0xc6/0x130 fs/super.c:473
 cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1373
 task_work_run+0x251/0x310 kernel/task_work.c:228
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x168/0x370 kernel/entry/common.c:218
 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f08d607de17
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:00007fff42aa12d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f08d607de17
RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007fff42aa1390
RBP: 00007fff42aa1390 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fff42aa2450
R13: 00007f08d60c73b9 R14: 0000000000021e79 R15: 0000000000000006
 </TASK>