------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2462!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 1989 Comm: kworker/u4:2 Not tainted 4.4.170+ #4
Workqueue: writeback wb_workfn (flush-8:0)
task: ffff8801d62917c0 task.stack: ffff8801d6120000
RIP: 0010:[<ffffffff816472ff>]  [<ffffffff816472ff>] mpage_prepare_extent_to_map+0x6cf/0x8e0 fs/ext4/inode.c:2462
RSP: 0000:ffff8801d61272e0  EFLAGS: 00010293
RAX: ffff8801d62917c0 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff816472ff RDI: ffffea0006f98890
RBP: ffff8801d6127478 R08: 0000000000000002 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000000 R12: ffffea0006f98880
R13: 0000000000000001 R14: dffffc0000000000 R15: ffff8801d61275e0
FS:  0000000000000000(0000) GS:ffff8801db700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000030620000 CR3: 00000000b33fa000 CR4: 00000000001606b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 1ffff1003ac24e6a ffff8801d6127370 ffff8801d61275e8 ffff8801d61275f0
 00000002d61273c0 0007ffffffffffff ffff8801da2c4398 000000010000000c
 7fffffffffffffff ffff8801d6127390 ffff8801d61275f8 ffffed003ac24ebd
Call Trace:
 [<ffffffff81656679>] ext4_writepages+0xd59/0x2c40 fs/ext4/inode.c:2617
 [<ffffffff813da9fc>] do_writepages+0xfc/0x1e0 mm/page-writeback.c:2334
 [<ffffffff8152623c>] __writeback_single_inode+0xfc/0x1380 fs/fs-writeback.c:1285
 [<ffffffff815279cf>] writeback_sb_inodes+0x50f/0xf60 fs/fs-writeback.c:1548
 [<ffffffff8152889b>] wb_writeback+0x26b/0xcf0 fs/fs-writeback.c:1724
 [<ffffffff8152b1a2>] wb_do_writeback fs/fs-writeback.c:1858 [inline]
 [<ffffffff8152b1a2>] wb_workfn+0x202/0x1020 fs/fs-writeback.c:1894
 [<ffffffff81122a15>] process_one_work+0x825/0x1720 kernel/workqueue.c:2064
 [<ffffffff81123df4>] worker_thread+0x4e4/0xf50 kernel/workqueue.c:2196
 [<ffffffff811340b3>] kthread+0x273/0x310 kernel/kthread.c:211
 [<ffffffff82717d85>] ret_from_fork+0x55/0x80 arch/x86/entry/entry_64.S:537
Code: ff e8 26 17 0c 01 48 8b 85 90 fe ff ff 48 39 85 f8 fe ff ff 0f 86 2e fc ff ff 45 31 e4 eb 20 e8 e8 20 cc ff 0f 0b e8 e1 20 cc ff <0f> 0b 45 31 e4 e8 d7 20 cc ff 8b 85 18 ff ff ff 85 c0 75 4c e8 
RIP  [<ffffffff816472ff>] mpage_prepare_extent_to_map+0x6cf/0x8e0 fs/ext4/inode.c:2462
 RSP <ffff8801d61272e0>
---[ end trace 8783661009b1ad1a ]---