BTRFS warning (device loop0): Skipping commit of aborted transaction.
------------[ cut here ]------------
BTRFS: Transaction aborted (error -28)
WARNING: fs/btrfs/transaction.c:2067 at cleanup_transaction+0x800/0x9d0 fs/btrfs/transaction.c:2067, CPU#0: kworker/u4:0/12
Modules linked in:
CPU: 0 UID: 0 PID: 12 Comm: kworker/u4:0 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+0x803/0x9d0 fs/btrfs/transaction.c:2067
Code: 0a e8 a1 b1 d5 fd e9 87 00 00 00 e8 67 b8 ba fd 84 c0 74 2f e8 8e b1 d5 fd eb 77 e8 87 b1 d5 fd 48 8d 3d 60 81 49 0c 44 89 e6 <67> 48 0f b9 3a 49 bf 00 00 00 00 00 fc ff df 4c 8b 6c 24 18 e9 8d
RSP: 0018:ffffc9000025f460 EFLAGS: 00010293
RAX: ffffffff83f015c9 RBX: ffff8880124da000 RCX: ffff88801cacca80
RDX: 0000000000000000 RSI: 00000000ffffffe4 RDI: ffffffff90399730
RBP: ffffc9000025f590 R08: ffff88801cacca80 R09: 0000000000000003
R10: 00000000fffffffb R11: 0000000000000000 R12: 00000000ffffffe4
R13: ffff8880551064c8 R14: 0000000000000000 R15: 1ffff1100aa20c99
FS:  0000000000000000(0000) GS:ffff88808c894000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb4b3ab5b50 CR3: 0000000043a97000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 btrfs_commit_transaction+0x2594/0x2fc0 fs/btrfs/transaction.c:2659
 flush_space+0x2a3/0xe20 fs/btrfs/space-info.c:-1
 do_async_reclaim_metadata_space+0x3fc/0x960 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:3314 [inline]
 process_scheduled_works+0xb5d/0x1860 kernel/workqueue.c:3397
 worker_thread+0xa53/0xfc0 kernel/workqueue.c:3478
 kthread+0x389/0x470 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>
----------------
Code disassembly (best guess):
   0:	0a e8                	or     %al,%ch
   2:	a1 b1 d5 fd e9 87 00 	movabs 0x87e9fdd5b1,%eax
   9:	00 00
   b:	e8 67 b8 ba fd       	call   0xfdbab877
  10:	84 c0                	test   %al,%al
  12:	74 2f                	je     0x43
  14:	e8 8e b1 d5 fd       	call   0xfdd5b1a7
  19:	eb 77                	jmp    0x92
  1b:	e8 87 b1 d5 fd       	call   0xfdd5b1a7
  20:	48 8d 3d 60 81 49 0c 	lea    0xc498160(%rip),%rdi        # 0xc498187
  27:	44 89 e6             	mov    %r12d,%esi
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	49 bf 00 00 00 00 00 	movabs $0xdffffc0000000000,%r15
  36:	fc ff df
  39:	4c 8b 6c 24 18       	mov    0x18(%rsp),%r13
  3e:	e9                   	.byte 0xe9
  3f:	8d                   	.byte 0x8d