------------[ cut here ]------------
WARNING: CPU: 0 PID: 5075 at fs/btrfs/block-rsv.c:459 btrfs_release_global_block_rsv+0x24f/0x270 fs/btrfs/block-rsv.c:459
Modules linked in:
CPU: 0 PID: 5075 Comm: syz-executor.1 Not tainted 6.7.0-syzkaller-01727-gab27740f7665 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:btrfs_release_global_block_rsv+0x24f/0x270 fs/btrfs/block-rsv.c:459
Code: 0f 0b 90 e9 e6 fe ff ff e8 fe 47 d5 fd 90 0f 0b 90 e9 10 ff ff ff e8 f0 47 d5 fd 90 0f 0b 90 e9 3a ff ff ff e8 e2 47 d5 fd 90 <0f> 0b 90 e9 6b ff ff ff e8 d4 47 d5 fd 90 0f 0b 90 eb 8d 66 2e 0f
RSP: 0018:ffffc90003c9fad8 EFLAGS: 00010293
RAX: ffffffff83b9ab2e RBX: 0000000000051000 RCX: ffff88802858d940
RDX: 0000000000000000 RSI: 0000000000051000 RDI: 0000000000000000
RBP: 0000000000000001 R08: ffffffff83b9aa94 R09: 1ffff1100a3e4200
R10: dffffc0000000000 R11: ffffed100a3e4201 R12: ffff888051f21800
R13: ffff888051f21858 R14: ffff88805540c418 R15: dffffc0000000000
FS:  0000555556d6b480(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f31bbba80d0 CR3: 00000000575e4000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 btrfs_free_block_groups+0xc39/0x1070 fs/btrfs/block-group.c:4366
 close_ctree+0x75a/0xd40 fs/btrfs/disk-io.c:4390
 generic_shutdown_super+0x13a/0x2c0 fs/super.c:652
 kill_anon_super+0x3b/0x70 fs/super.c:1230
 btrfs_kill_super+0x41/0x50 fs/btrfs/super.c:2102
 deactivate_locked_super+0xc1/0x130 fs/super.c:477
 cleanup_mnt+0x426/0x4c0 fs/namespace.c:1267
 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 kernel/entry/common.c:108 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
 syscall_exit_to_user_mode+0x167/0x370 kernel/entry/common.c:212
 do_syscall_64+0x102/0x230 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7fa689c7e057
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:00007ffdc43b8b88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fa689c7e057
RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007ffdc43b8c40
RBP: 00007ffdc43b8c40 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffdc43b9d00
R13: 00007fa689cc83b9 R14: 00000000001a6d13 R15: 000000000000000c
 </TASK>