BTRFS warning (device loop0): Skipping commit of aborted transaction.
------------[ cut here ]------------
btrfs_abort_should_print_stack(__error)
WARNING: fs/btrfs/transaction.c:2068 at cleanup_transaction+0x727/0x7c0 fs/btrfs/transaction.c:2068, CPU#0: kworker/u4:5/85
Modules linked in:
CPU: 0 UID: 0 PID: 85 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 04/01/2014
Workqueue: events_unbound btrfs_async_reclaim_metadata_space
RIP: 0010:cleanup_transaction+0x727/0x7c0 fs/btrfs/transaction.c:2068
Code: 08 74 1a 41 83 fc fb 74 0d 41 83 fc f4 75 15 e8 8f 63 cf fd eb 17 e8 88 63 cf fd eb 10 e8 81 63 cf fd eb 09 e8 7a 63 cf fd 90 <0f> 0b 90 41 f7 dc e9 44 fa ff ff 44 89 e9 80 e1 07 80 c1 03 38 c1
RSP: 0018:ffffc90000d37460 EFLAGS: 00010293
RAX: ffffffff83f6ddc6 RBX: ffff8880122a4000 RCX: ffff888000a00000
RDX: 0000000000000000 RSI: ffffffff8ef865e0 RDI: 00000000ffffffe4
RBP: ffffc90000d37590 R08: ffff888000a00000 R09: 0000000000000003
R10: 00000000fffffffb R11: 0000000000000000 R12: 00000000ffffffe4
R13: ffff888051c9e468 R14: ffff888051c9e4c8 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff88808c846000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056458c9805f8 CR3: 00000000524ee000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 btrfs_commit_transaction+0x262c/0x30b0 fs/btrfs/transaction.c:2664
 flush_space+0x28a/0xde0 fs/btrfs/space-info.c:-1
 do_async_reclaim_metadata_space+0x3e8/0x940 fs/btrfs/space-info.c:1211
 btrfs_async_reclaim_metadata_space+0x89/0xe0 fs/btrfs/space-info.c:1278
 process_one_work kernel/workqueue.c:3322 [inline]
 process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3405
 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3486
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>