syzbot

------------[ cut here ]------------
len > ordered->bytes_left
WARNING: fs/btrfs/ordered-data.c:390 at can_finish_ordered_extent+0x409/0x830 fs/btrfs/ordered-data.c:390, CPU#0: kworker/u4:9/1149
Modules linked in:
CPU: 0 UID: 0 PID: 1149 Comm: kworker/u4:9 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 simple_end_io_work
RIP: 0010:can_finish_ordered_extent+0x409/0x830 fs/btrfs/ordered-data.c:390
Code: 00 00 00 e8 09 81 c8 fd eb 05 e8 02 81 c8 fd 4d 85 ed 0f 94 c0 48 83 c4 38 5b 41 5c 41 5d 41 5e 41 5f 5d e9 09 92 b5 07 cc 90 <0f> 0b 90 e8 2f fd ad fd 48 8d 05 00 00 00 00 48 c7 c7 a0 9b 95 8e
RSP: 0018:ffffc900015bf968 EFLAGS: 00010287
RAX: ffffffff83fdc133 RBX: 1ffff11007f3479e RCX: ffff888032faa540
RDX: 0000000000000000 RSI: 0000000000006000 RDI: 0000000000071000
RBP: 1ffff11007f347a3 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff520002b7f2c R12: ffff88803f9a3cf0
R13: fffffffffff95000 R14: 1ffff110084b063c R15: 0000000000071000
FS:  0000000000000000(0000) GS:ffff88808c848000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb7eda7a000 CR3: 00000000439b1000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 btrfs_finish_ordered_extent+0xed/0x420 fs/btrfs/ordered-data.c:438
 end_bbio_data_write+0xad3/0xc80 fs/btrfs/extent_io.c:538
 btrfs_bio_end_io+0x3ea/0x4d0 fs/btrfs/bio.c:147
 process_one_work kernel/workqueue.c:3322 [inline]
 process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3405
 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3486
 kthread+0x388/0x470 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>