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BTRFS: Transaction aborted (error -28)
WARNING: fs/btrfs/inode.c:3279 at btrfs_finish_one_ordered+0x20ab/0x2420 fs/btrfs/inode.c:3279, 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: btrfs-endio-write btrfs_work_helper
RIP: 0010:btrfs_finish_one_ordered+0x20b0/0x2420 fs/btrfs/inode.c:3279
Code: 00 00 e8 b3 9f c3 fd 84 c0 0f 84 a4 00 00 00 e8 26 6d de fd e9 d5 02 00 00 e8 1c 6d de fd 48 8d 3d 75 4e 34 0c 48 8b 74 24 10 <67> 48 0f b9 3a e9 0d f8 ff ff e8 01 6d de fd c6 05 dc 16 15 0c 01
RSP: 0018:ffffc9000025f880 EFLAGS: 00010293
RAX: ffffffff83e5e5a4 RBX: 1ffff1100234b959 RCX: ffff88801c6e4900
RDX: 0000000000000000 RSI: 00000000ffffffe4 RDI: ffffffff901a3420
RBP: ffffc9000025fa50 R08: ffff88801c6e4900 R09: 0000000000000003
R10: 00000000fffffffb R11: 0000000000000000 R12: 00000000ffffffe4
R13: 0000000000790000 R14: 0000000000000000 R15: ffff888011a5cac8
FS:  0000000000000000(0000) GS:ffff88808ca94000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe8d5b8f000 CR3: 000000001240e000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 btrfs_work_helper+0x38c/0xbe0 fs/btrfs/async-thread.c:312
 process_one_work kernel/workqueue.c:3275 [inline]
 process_scheduled_works+0xaec/0x17a0 kernel/workqueue.c:3358
 worker_thread+0xa50/0xfc0 kernel/workqueue.c:3439
 kthread+0x388/0x470 kernel/kthread.c:467
 ret_from_fork+0x51e/0xb90 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:	00 00                	add    %al,(%rax)
   2:	e8 b3 9f c3 fd       	call   0xfdc39fba
   7:	84 c0                	test   %al,%al
   9:	0f 84 a4 00 00 00    	je     0xb3
   f:	e8 26 6d de fd       	call   0xfdde6d3a
  14:	e9 d5 02 00 00       	jmp    0x2ee
  19:	e8 1c 6d de fd       	call   0xfdde6d3a
  1e:	48 8d 3d 75 4e 34 0c 	lea    0xc344e75(%rip),%rdi        # 0xc344e9a
  25:	48 8b 74 24 10       	mov    0x10(%rsp),%rsi
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	e9 0d f8 ff ff       	jmp    0xfffff841
  34:	e8 01 6d de fd       	call   0xfdde6d3a
  39:	c6 05 dc 16 15 0c 01 	movb   $0x1,0xc1516dc(%rip)        # 0xc15171c