------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2462!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 4135 Comm: kworker/u4:5 Not tainted 4.4.162+ #117
Workqueue: writeback wb_workfn (flush-8:0)
task: ffff8801d854af80 task.stack: ffff8801d6490000
RIP: 0010:[<ffffffff8163feb0>]  [<ffffffff8163feb0>] mpage_prepare_extent_to_map+0x670/0x8e0 fs/ext4/inode.c:2462
RSP: 0018:ffff8801d6497390  EFLAGS: 00010293
RAX: ffff8801d854af80 RBX: ffffea0006a5a740 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8163feb0 RDI: ffffea0006a5a750
RBP: ffff8801d6497548 R08: ffff8801d854b848 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000001 R14: dffffc0000000000 R15: ffff8801d6497690
FS:  0000000000000000(0000) GS:ffff8801db700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fece36a7000 CR3: 00000000bad9d000 CR4: 00000000001606b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 1ffff1003ac92e80 ffff8801d6497420 ffff8801d6497698 ffff8801d64976a0
 00000002d6cfdbb0 0007ffffffffffff ffff8801d6cfdb80 000000090000000c
 7fffffffffffffff ffff8801d6497460 ffff8801d64976a8 ffffed003ac92ed3
Call Trace:
 [<ffffffff8164f10c>] ext4_writepages+0xd4c/0x2c20 fs/ext4/inode.c:2617
 [<ffffffff813d741f>] do_writepages+0xef/0x1d0 mm/page-writeback.c:2334
 [<ffffffff8151fed1>] __writeback_single_inode+0x101/0x1340 fs/fs-writeback.c:1285
 [<ffffffff815215bb>] writeback_sb_inodes+0x4ab/0xee0 fs/fs-writeback.c:1548
 [<ffffffff815224b1>] wb_writeback+0x2e1/0xd00 fs/fs-writeback.c:1724
 [<ffffffff81524c53>] wb_do_writeback fs/fs-writeback.c:1858 [inline]
 [<ffffffff81524c53>] wb_workfn+0x243/0x1010 fs/fs-writeback.c:1894
 [<ffffffff81122a94>] process_one_work+0x824/0x1670 kernel/workqueue.c:2064
 [<ffffffff811239b9>] worker_thread+0xd9/0x1060 kernel/workqueue.c:2196
 [<ffffffff81133e18>] kthread+0x268/0x300 kernel/kthread.c:211
 [<ffffffff827066c5>] ret_from_fork+0x55/0x80 arch/x86/entry/entry_64.S:510
Code: 48 89 df e8 23 45 d7 ff e9 32 ff ff ff e8 49 6e cc ff 48 89 df e8 b1 5e d7 ff e9 fa fd ff ff e8 37 6e cc ff 0f 0b e8 30 6e cc ff <0f> 0b 31 c0 89 85 b0 fe ff ff e8 21 6e cc ff 8b 85 18 ff ff ff 
RIP  [<ffffffff8163feb0>] mpage_prepare_extent_to_map+0x670/0x8e0 fs/ext4/inode.c:2462
 RSP <ffff8801d6497390>
---[ end trace e7573eb86da5f56e ]---