------------[ cut here ]------------
BTRFS: Transaction aborted (error -28)
WARNING: CPU: 1 PID: 5917 at fs/btrfs/block-group.c:3972 do_chunk_alloc fs/btrfs/block-group.c:3972 [inline]
WARNING: CPU: 1 PID: 5917 at fs/btrfs/block-group.c:3972 btrfs_chunk_alloc+0xe7c/0x10b0 fs/btrfs/block-group.c:4214
Modules linked in:
CPU: 1 UID: 0 PID: 5917 Comm: kworker/u8:8 Not tainted 6.15.0-rc4-syzkaller-00256-g95d3481af6dc #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
Workqueue: events_unbound btrfs_async_reclaim_metadata_space
RIP: 0010:do_chunk_alloc fs/btrfs/block-group.c:3972 [inline]
RIP: 0010:btrfs_chunk_alloc+0xe7c/0x10b0 fs/btrfs/block-group.c:4214
Code: 48 c7 c6 60 3d af 8b 44 89 f2 e8 7f 3e 48 fd e9 05 fd ff ff e8 35 ea dd fd 90 48 c7 c7 00 3d af 8b 44 89 f6 e8 75 46 a2 fd 90 <0f> 0b 90 90 e9 e6 fc ff ff e8 16 ea dd fd eb 05 e8 0f ea dd fd 48
RSP: 0018:ffffc9000b69f838 EFLAGS: 00010246
RAX: 4aa5778fb99fda00 RBX: 0000000000000000 RCX: ffff888024dc5a00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002
RBP: 00000000ffffff01 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bba4b4 R12: ffff8880591ad800
R13: dffffc0000000000 R14: ffffffffffffffe4 R15: ffff88805a7a8000
FS:  0000000000000000(0000) GS:ffff8881261cb000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb3debb7bac CR3: 000000005929e000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 flush_space+0x2fe/0xcc0 fs/btrfs/space-info.c:815
 btrfs_async_reclaim_metadata_space+0x185/0x3d0 fs/btrfs/space-info.c:1120
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0xade/0x17a0 kernel/workqueue.c:3319
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
 kthread+0x711/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x4e/0x80 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>