------------[ cut here ]------------
BTRFS: Transaction aborted (error -28)
WARNING: CPU: 0 PID: 1037 at fs/btrfs/block-group.c:4007 do_chunk_alloc fs/btrfs/block-group.c:4007 [inline]
WARNING: CPU: 0 PID: 1037 at fs/btrfs/block-group.c:4007 btrfs_chunk_alloc+0xe64/0x1430 fs/btrfs/block-group.c:4248
Modules linked in:
CPU: 0 UID: 0 PID: 1037 Comm: kworker/u4:5 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: events_unbound btrfs_async_reclaim_metadata_space
RIP: 0010:do_chunk_alloc fs/btrfs/block-group.c:4007 [inline]
RIP: 0010:btrfs_chunk_alloc+0xe64/0x1430 fs/btrfs/block-group.c:4248
Code: 00 e8 10 8c b3 fd 84 c0 74 29 e8 f7 ff cc fd e9 62 01 00 00 e8 ed ff cc fd 90 48 c7 c7 60 b6 90 8b 44 89 f6 e8 1d 5f 90 fd 90 <0f> 0b 90 90 e9 9a fc ff ff e8 6e b5 48 07 89 c3 31 ff 89 c6 e8 03
RSP: 0018:ffffc90002567778 EFLAGS: 00010246
RAX: 282beddec54dec00 RBX: ffff888052530001 RCX: ffff8880351f4900
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1b7a238 R12: dffffc0000000000
R13: ffff888051a7a000 R14: ffffffffffffffe4 R15: ffff8880439c8a68
FS:  0000000000000000(0000) GS:ffff88808d96d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000559967c4c530 CR3: 0000000041c00000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 flush_space+0x30b/0xcd0 fs/btrfs/space-info.c:861
 do_async_reclaim_metadata_space+0x144/0x390 fs/btrfs/space-info.c:1158
 btrfs_async_reclaim_metadata_space+0x89/0xe0 fs/btrfs/space-info.c:1226
 process_one_work kernel/workqueue.c:3263 [inline]
 process_scheduled_works+0xade/0x17b0 kernel/workqueue.c:3346
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3427
 kthread+0x70e/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x439/0x7d0 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>