BTRFS warning (device loop0): Skipping commit of aborted transaction.
------------[ cut here ]------------
BTRFS: Transaction aborted (error -28)
WARNING: fs/btrfs/transaction.c:2036 at 0x0, CPU#0: kworker/u4:3/44
Modules linked in:
CPU: 0 UID: 0 PID: 44 Comm: kworker/u4:3 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:cleanup_transaction fs/btrfs/transaction.c:2036 [inline]
RIP: 0010:btrfs_commit_transaction+0x30ff/0x3b10 fs/btrfs/transaction.c:2629
Code: d7 4f f1 fd eb 7d e8 e0 3a d7 fd 84 c0 74 25 e8 c7 4f f1 fd eb 6d e8 c0 4f f1 fd 48 8d 3d d9 ec b9 0b 44 8b 6c 24 38 44 89 ee <67> 48 0f b9 3a e9 24 f9 ff ff e8 a2 1d 7e 07 89 c3 31 ff 89 c6 e8
RSP: 0018:ffffc90000a174e0 EFLAGS: 00010293
RAX: ffffffff83d00a40 RBX: ffff888052798001 RCX: ffff88801ee824c0
RDX: 0000000000000000 RSI: 00000000ffffffe4 RDI: ffffffff8f89f720
RBP: ffffc90000a17810 R08: ffff88801ee824c0 R09: 0000000000000003
R10: 00000000fffffffb R11: 0000000000000000 R12: 1ffff110086991a1
R13: 00000000ffffffe4 R14: 0000000000000000 R15: ffff888052798000
FS:  0000000000000000(0000) GS:ffff88808d68a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9ffcdd3fc8 CR3: 000000004322a000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 flush_space+0x4dd/0xd20 fs/btrfs/space-info.c:921
 do_async_reclaim_metadata_space+0x11e/0x350 fs/btrfs/space-info.c:1185
 btrfs_async_reclaim_metadata_space+0x89/0xe0 fs/btrfs/space-info.c:1252
 process_one_work kernel/workqueue.c:3257 [inline]
 process_scheduled_works+0xad1/0x1770 kernel/workqueue.c:3340
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3421
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x599/0xb30 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>
----------------
Code disassembly (best guess):
   0:	d7                   	xlat   %ds:(%rbx)
   1:	4f f1                	rex.WRXB int1
   3:	fd                   	std
   4:	eb 7d                	jmp    0x83
   6:	e8 e0 3a d7 fd       	call   0xfdd73aeb
   b:	84 c0                	test   %al,%al
   d:	74 25                	je     0x34
   f:	e8 c7 4f f1 fd       	call   0xfdf14fdb
  14:	eb 6d                	jmp    0x83
  16:	e8 c0 4f f1 fd       	call   0xfdf14fdb
  1b:	48 8d 3d d9 ec b9 0b 	lea    0xbb9ecd9(%rip),%rdi        # 0xbb9ecfb
  22:	44 8b 6c 24 38       	mov    0x38(%rsp),%r13d
  27:	44 89 ee             	mov    %r13d,%esi
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	e9 24 f9 ff ff       	jmp    0xfffff958
  34:	e8 a2 1d 7e 07       	call   0x77e1ddb
  39:	89 c3                	mov    %eax,%ebx
  3b:	31 ff                	xor    %edi,%edi
  3d:	89 c6                	mov    %eax,%esi
  3f:	e8                   	.byte 0xe8