------------[ cut here ]------------
WARNING: CPU: 1 PID: 5090 at fs/btrfs/block-group.c:159 btrfs_put_block_group+0x213/0x260
Modules linked in:
CPU: 1 PID: 5090 Comm: syz-executor.4 Not tainted 6.6.0-syzkaller-15601-g4bbdb725a36b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
RIP: 0010:btrfs_put_block_group+0x213/0x260 fs/btrfs/block-group.c:159
Code: e3 15 fe e8 9f 8d d5 fd 0f 0b e9 89 fe ff ff e8 93 8d d5 fd 48 89 df be 03 00 00 00 5b 41 5e 5d e9 32 ae c9 00 e8 7d 8d d5 fd <0f> 0b e9 4f ff ff ff e8 71 8d d5 fd 0f 0b 4c 89 f0 48 c1 e8 03 80
RSP: 0018:ffffc9000437fab8 EFLAGS: 00010293
RAX: ffffffff83b93313 RBX: 000000000000b000 RCX: ffff88801d75bb80
RDX: 0000000000000000 RSI: 000000000000b000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff83b9325b R09: 1ffff110054d2b3e
R10: dffffc0000000000 R11: ffffed10054d2b3f R12: ffff88806c8ff800
R13: 1ffff1100d91ff2e R14: ffff88806c8ff800 R15: ffff88802a694188
FS:  0000555555d10480(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000556f8c0b0498 CR3: 000000002b95d000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 btrfs_free_block_groups+0xb77/0x1060 fs/btrfs/block-group.c:4360
 close_ctree+0x75a/0xd40 fs/btrfs/disk-io.c:4389
 generic_shutdown_super+0x13a/0x2c0 fs/super.c:696
 kill_anon_super+0x3b/0x70 fs/super.c:1295
 btrfs_kill_super+0x41/0x50 fs/btrfs/super.c:2097
 deactivate_locked_super+0xc1/0x130 fs/super.c:484
 cleanup_mnt+0x426/0x4c0 fs/namespace.c:1256
 task_work_run+0x24a/0x300 kernel/task_work.c:180
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0xde/0x100 kernel/entry/common.c:171
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
 syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:296
 do_syscall_64+0x50/0x110 arch/x86/entry/common.c:88
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f021d87de17
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:00007ffd53e30598 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f021d87de17
RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007ffd53e30650
RBP: 00007ffd53e30650 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffd53e31710
R13: 00007f021d8c73b9 R14: 000000000003f95f R15: 000000000000000b
 </TASK>