------------[ cut here ]------------
WARNING: CPU: 0 PID: 5043 at fs/btrfs/block-group.c:159 btrfs_put_block_group+0x22b/0x270
Modules linked in:
CPU: 0 PID: 5043 Comm: syz-executor.0 Not tainted 6.5.0-rc7-syzkaller-00022-ga5e505a99ca7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
RIP: 0010:btrfs_put_block_group+0x22b/0x270 fs/btrfs/block-group.c:159
Code: fe e8 89 98 dd fd 0f 0b e9 76 fe ff ff e8 7d 98 dd fd 48 89 df be 03 00 00 00 5b 41 5e 41 5f 5d e9 3a ce 88 00 e8 65 98 dd fd <0f> 0b e9 48 ff ff ff e8 59 98 dd fd 0f 0b 4c 89 f0 48 c1 e8 03 42
RSP: 0018:ffffc90003eefab0 EFLAGS: 00010293
RAX: ffffffff83ae1fcb RBX: 0000000000003000 RCX: ffff88807d235940
RDX: 0000000000000000 RSI: 0000000000003000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff83ae1f0c R09: 1ffff11004447b3c
R10: dffffc0000000000 R11: ffffed1004447b3d R12: 1ffff1100754bc2c
R13: dffffc0000000000 R14: ffff88803aa5e000 R15: dffffc0000000000
FS:  000055555668f480(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7b45806c00 CR3: 00000000332d1000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 btrfs_free_block_groups+0x96a/0xe60 fs/btrfs/block-group.c:4341
 close_ctree+0x72c/0xd00 fs/btrfs/disk-io.c:4417
 generic_shutdown_super+0x134/0x340 fs/super.c:499
 kill_anon_super+0x3b/0x60 fs/super.c:1110
 btrfs_kill_super+0x41/0x50 fs/btrfs/super.c:2138
 deactivate_locked_super+0xa4/0x110 fs/super.c:330
 cleanup_mnt+0x426/0x4c0 fs/namespace.c:1254
 task_work_run+0x24a/0x300 kernel/task_work.c:179
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0xd9/0x100 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:286 [inline]
 syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:297
 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f2675c7de17
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:00007ffc31629e98 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f2675c7de17
RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007ffc31629f50
RBP: 00007ffc31629f50 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffc3162b010
R13: 00007f2675cc73b9 R14: 000000000017e460 R15: 0000000000000009
 </TASK>