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kernel BUG at fs/ext4/inode.c:2462!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 5857 Comm: kworker/u4:5 Not tainted 4.4.163+ #122
Workqueue: writeback wb_workfn (flush-8:0)
task: ffff8801d1d8c740 task.stack: ffff8801d60a8000
RIP: 0010:[<ffffffff81640120>]  [<ffffffff81640120>] mpage_prepare_extent_to_map+0x670/0x8e0 fs/ext4/inode.c:2462
RSP: 0018:ffff8801d60af330  EFLAGS: 00010293
RAX: ffff8801d1d8c740 RBX: ffffea0007125000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff81640120 RDI: ffffea0007125010
RBP: ffff8801d60af4e8 R08: ffff8801d1d8d008 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: 00000000000000b4 R14: dffffc0000000000 R15: ffff8801d60af630
FS:  0000000000000000(0000) GS:ffff8801db700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000205b89bf CR3: 00000000003d0000 CR4: 00000000001606b0
Stack:
 1ffff1003ac15e74 ffff8801d60af3c0 ffff8801d60af638 ffff8801d60af640
 0000000081a38520 0000000000000fff ffff8801cecad388 0000000e0000000c
 0000000000003350 ffff8801d60af400 ffff8801d60af648 ffffed003ac15ec7
Call Trace:
 [<ffffffff8164f37c>] ext4_writepages+0xd4c/0x2c20 fs/ext4/inode.c:2617
 [<ffffffff813d76ff>] do_writepages+0xef/0x1d0 mm/page-writeback.c:2334
 [<ffffffff81520141>] __writeback_single_inode+0x101/0x1340 fs/fs-writeback.c:1285
 [<ffffffff8152182b>] writeback_sb_inodes+0x4ab/0xee0 fs/fs-writeback.c:1548
 [<ffffffff8152235b>] __writeback_inodes_wb+0xfb/0x1e0 fs/fs-writeback.c:1617
 [<ffffffff81522969>] wb_writeback+0x529/0xd00 fs/fs-writeback.c:1726
 [<ffffffff815255e6>] wb_check_old_data_flush fs/fs-writeback.c:1841 [inline]
 [<ffffffff815255e6>] wb_do_writeback fs/fs-writeback.c:1865 [inline]
 [<ffffffff815255e6>] wb_workfn+0x966/0x1010 fs/fs-writeback.c:1894
 [<ffffffff81122c94>] process_one_work+0x824/0x1730 kernel/workqueue.c:2064
 [<ffffffff81123c79>] worker_thread+0xd9/0x1060 kernel/workqueue.c:2196
 [<ffffffff811340d8>] kthread+0x268/0x300 kernel/kthread.c:211
 [<ffffffff827127c5>] ret_from_fork+0x55/0x80 arch/x86/entry/entry_64.S:510
Code: 48 89 df e8 c3 44 d7 ff e9 32 ff ff ff e8 79 71 cc ff 48 89 df e8 51 5e d7 ff e9 fa fd ff ff e8 67 71 cc ff 0f 0b e8 60 71 cc ff <0f> 0b 31 c0 89 85 b0 fe ff ff e8 51 71 cc ff 8b 85 18 ff ff ff 
RIP  [<ffffffff81640120>] mpage_prepare_extent_to_map+0x670/0x8e0 fs/ext4/inode.c:2462
 RSP <ffff8801d60af330>
---[ end trace c069e812a2ce0fa9 ]---