BTRFS info (device loop3): last unmount of filesystem c0ead524-1f1c-4ccc-9384-0f6d362fec31
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WARNING: CPU: 0 PID: 6618 at fs/btrfs/block-rsv.c:455 btrfs_release_global_block_rsv+0x262/0x270 fs/btrfs/block-rsv.c:455
Modules linked in:
CPU: 0 UID: 0 PID: 6618 Comm: syz-executor Not tainted 6.15.0-rc6-syzkaller-00025-g627277ba7c23 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:btrfs_release_global_block_rsv+0x262/0x270 fs/btrfs/block-rsv.c:455
Code: 0f 0b 90 e9 0b ff ff ff e8 eb 63 e1 fd 90 0f 0b 90 e9 35 ff ff ff e8 dd 63 e1 fd 90 0f 0b 90 e9 66 ff ff ff e8 cf 63 e1 fd 90 <0f> 0b 90 eb 88 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90
RSP: 0018:ffffc90003b3fad0 EFLAGS: 00010293
RAX: ffffffff83de8cd1 RBX: ffffffffffff0000 RCX: ffff8880768c8000
RDX: 0000000000000000 RSI: ffffffffffff0000 RDI: 0000000000000000
RBP: ffff888062126160 R08: ffff88806212500b R09: 1ffff1100c424a01
R10: dffffc0000000000 R11: ffffed100c424a02 R12: ffff88807f1a8188
R13: ffff888062126318 R14: 0000000000000000 R15: dffffc0000000000
FS:  000055556658b500(0000) GS:ffff8881260fb000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f009d39c000 CR3: 000000005ece8000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 btrfs_free_block_groups+0xc31/0x1080 fs/btrfs/block-group.c:4499
 close_ctree+0x7be/0xcb0 fs/btrfs/disk-io.c:4486
 generic_shutdown_super+0x132/0x2c0 fs/super.c:642
 kill_anon_super+0x3b/0x70 fs/super.c:1237
 btrfs_kill_super+0x41/0x50 fs/btrfs/super.c:2099
 deactivate_locked_super+0xbc/0x130 fs/super.c:473
 cleanup_mnt+0x425/0x4c0 fs/namespace.c:1431
 task_work_run+0x1d1/0x260 kernel/task_work.c:227
 resume_user_mode_work+0x5e/0x80 include/linux/resume_user_mode.h:50
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x9a/0x120 kernel/entry/common.c:218
 do_syscall_64+0x103/0x210 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdb6757fa47
Code: a8 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 a8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffce7a0ae78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007fdb675f15fc RCX: 00007fdb6757fa47
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffce7a0af30
RBP: 00007ffce7a0af30 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffce7a0bfb0
R13: 00007fdb675f15fc R14: 0000000000035d32 R15: 00007ffce7a0bff0
 </TASK>