BTRFS warning (device loop0): Skipping commit of aborted transaction.
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BTRFS: Transaction aborted (error -28)
WARNING: fs/btrfs/transaction.c:2067 at cleanup_transaction+0x7aa/0x970 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+0x7ad/0x970 fs/btrfs/transaction.c:2067
Code: 87 d6 fd e9 80 00 00 00 e8 40 9a bb fd 84 c0 74 28 e8 57 87 d6 fd eb 70 41 89 c7 e8 4d 87 d6 fd 48 8d 3d 96 1e 4a 0c 44 89 fe <67> 48 0f b9 3a 4c 8b 74 24 10 e9 dd 00 00 00 e8 7f 80 b5 07 89 c3
RSP: 0018:ffffc9000025f460 EFLAGS: 00010293
RAX: ffffffff83eec9e3 RBX: ffff8880121a7000 RCX: ffff88801b744a80
RDX: 0000000000000000 RSI: 00000000ffffffe4 RDI: ffffffff9038e880
RBP: ffffc9000025f590 R08: ffff88801b744a80 R09: 0000000000000003
R10: 00000000fffffffb R11: 0000000000000000 R12: dffffc0000000000
R13: 0000000000000000 R14: ffff888011ea84c8 R15: 00000000ffffffe4
FS:  0000000000000000(0000) GS:ffff88808c8ae000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0fda632676 CR3: 000000001255f000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 btrfs_commit_transaction+0x25b1/0x3020 fs/btrfs/transaction.c:2659
 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:3314 [inline]
 process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3397
 worker_thread+0xa47/0xfb0 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:	87 d6                	xchg   %edx,%esi
   2:	fd                   	std
   3:	e9 80 00 00 00       	jmp    0x88
   8:	e8 40 9a bb fd       	call   0xfdbb9a4d
   d:	84 c0                	test   %al,%al
   f:	74 28                	je     0x39
  11:	e8 57 87 d6 fd       	call   0xfdd6876d
  16:	eb 70                	jmp    0x88
  18:	41 89 c7             	mov    %eax,%r15d
  1b:	e8 4d 87 d6 fd       	call   0xfdd6876d
  20:	48 8d 3d 96 1e 4a 0c 	lea    0xc4a1e96(%rip),%rdi        # 0xc4a1ebd
  27:	44 89 fe             	mov    %r15d,%esi
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	4c 8b 74 24 10       	mov    0x10(%rsp),%r14
  34:	e9 dd 00 00 00       	jmp    0x116
  39:	e8 7f 80 b5 07       	call   0x7b580bd
  3e:	89 c3                	mov    %eax,%ebx