------------[ cut here ]------------
BTRFS: Transaction aborted (error -28)
WARNING: fs/btrfs/inode.c:3297 at btrfs_finish_one_ordered+0x19e1/0x2420 fs/btrfs/inode.c:3297, CPU#0: kworker/u4:3/43
Modules linked in:
CPU: 0 UID: 0 PID: 43 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 04/01/2014
Workqueue: btrfs-endio-write btrfs_work_helper
RIP: 0010:btrfs_finish_one_ordered+0x19e9/0x2420 fs/btrfs/inode.c:3297
Code: 6d 39 d9 fd eb 7f e8 86 43 be fd 84 c0 74 25 e8 5d 39 d9 fd eb 6f e8 56 39 d9 fd 48 8d 3d 0f 5f 2e 0c 4c 8b 6c 24 10 44 89 ee <67> 48 0f b9 3a e9 96 00 00 00 e8 18 c6 c2 07 41 89 c6 31 ff 89 c6
RSP: 0018:ffffc90000457880 EFLAGS: 00010293
RAX: ffffffff83ec61ca RBX: ffff8880402a8001 RCX: ffff88801f5f8000
RDX: 0000000000000000 RSI: 00000000ffffffe4 RDI: ffffffff901ac0e0
RBP: ffffc90000457a50 R08: ffff88801f5f8000 R09: 0000000000000003
R10: 00000000fffffffb R11: 0000000000000000 R12: ffff888055cc46c0
R13: 00000000ffffffe4 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff88808ca5b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f23d5cc6ff8 CR3: 000000001cbe6000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 btrfs_work_helper+0x38c/0xc80 fs/btrfs/async-thread.c:312
 process_one_work kernel/workqueue.c:3275 [inline]
 process_scheduled_works+0xb02/0x1830 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:	6d                   	insl   (%dx),%es:(%rdi)
   1:	39 d9                	cmp    %ebx,%ecx
   3:	fd                   	std
   4:	eb 7f                	jmp    0x85
   6:	e8 86 43 be fd       	call   0xfdbe4391
   b:	84 c0                	test   %al,%al
   d:	74 25                	je     0x34
   f:	e8 5d 39 d9 fd       	call   0xfdd93971
  14:	eb 6f                	jmp    0x85
  16:	e8 56 39 d9 fd       	call   0xfdd93971
  1b:	48 8d 3d 0f 5f 2e 0c 	lea    0xc2e5f0f(%rip),%rdi        # 0xc2e5f31
  22:	4c 8b 6c 24 10       	mov    0x10(%rsp),%r13
  27:	44 89 ee             	mov    %r13d,%esi
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	e9 96 00 00 00       	jmp    0xca
  34:	e8 18 c6 c2 07       	call   0x7c2c651
  39:	41 89 c6             	mov    %eax,%r14d
  3c:	31 ff                	xor    %edi,%edi
  3e:	89 c6                	mov    %eax,%esi