BTRFS info (device loop0): last unmount of filesystem ed167579-eb65-4e76-9a50-61ac97e9b59d
------------[ cut here ]------------
fs_info->delayed_refs_rsv.reserved > 0
WARNING: fs/btrfs/block-rsv.c:463 at btrfs_release_global_block_rsv+0x254/0x270 fs/btrfs/block-rsv.c:463, CPU#1: syz-executor/5795
Modules linked in:
CPU: 1 UID: 0 PID: 5795 Comm: syz-executor Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:btrfs_release_global_block_rsv+0x254/0x270 fs/btrfs/block-rsv.c:463
Code: 0f 0b 90 e9 e1 fe ff ff e8 69 4f c8 fd 90 0f 0b 90 e9 0b ff ff ff e8 5b 4f c8 fd 90 0f 0b 90 e9 35 ff ff ff e8 4d 4f c8 fd 90 <0f> 0b 90 e9 66 ff ff ff e8 3f 4f c8 fd 90 0f 0b 90 eb 88 66 0f 1f
RSP: 0018:ffffc90004dc7aa8 EFLAGS: 00010293
RAX: ffffffff83fae523 RBX: ffff8880341e86b0 RCX: ffff888034608000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff8880341e82a0 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1e8fbef R12: dead000000000100
R13: 0000000000000000 R14: 0000000000008000 R15: dffffc0000000000
FS:  00005555573ed500(0000) GS:ffff8881266c9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9523338600 CR3: 000000004e542000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 btrfs_free_block_groups+0xcbf/0xfd0 fs/btrfs/block-group.c:4579
 close_ctree+0x7b4/0x13a0 fs/btrfs/disk-io.c:4406
 generic_shutdown_super+0x135/0x2c0 fs/super.c:643
 kill_anon_super+0x3b/0x70 fs/super.c:1289
 btrfs_kill_super+0x41/0x50 fs/btrfs/super.c:2127
 deactivate_locked_super+0xbc/0x130 fs/super.c:474
 cleanup_mnt+0x437/0x4d0 fs/namespace.c:1318
 task_work_run+0x1d9/0x270 kernel/task_work.c:233
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 __exit_to_user_mode_loop kernel/entry/common.c:44 [inline]
 exit_to_user_mode_loop+0xed/0x480 kernel/entry/common.c:75
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline]
 do_syscall_64+0x2b7/0xf80 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f95232ec117
Code: a2 c7 05 7c 94 24 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 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 e8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffc61304aa8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f952335471f RCX: 00007f95232ec117
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc61304b60
RBP: 00007ffc61304b60 R08: 00007ffc61305b60 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc61305bf0
R13: 00007f952335471f R14: 00000000000508d7 R15: 00007ffc61305c30
 </TASK>