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kernel BUG at fs/ext4/inode.c:2462!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 0 PID: 2169 Comm: kworker/u4:3 Not tainted 4.4.162+ #117
Workqueue: writeback wb_workfn (flush-8:0)
task: ffff8800b64e2f80 task.stack: ffff8800a8348000
RIP: 0010:[<ffffffff8163feb0>]  [<ffffffff8163feb0>] mpage_prepare_extent_to_map+0x670/0x8e0 fs/ext4/inode.c:2462
RSP: 0018:ffff8800a834f330  EFLAGS: 00010293
RAX: ffff8800b64e2f80 RBX: ffffea0006f7d740 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8163feb0 RDI: ffffea0006f7d750
RBP: ffff8800a834f4e8 R08: ffff8800b64e3848 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000119 R14: dffffc0000000000 R15: ffff8800a834f630
FS:  0000000000000000(0000) GS:ffff8801db600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32b24000 CR3: 00000001c41b2000 CR4: 00000000001606b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 1ffff10015069e74 ffff8800a834f3c0 ffff8800a834f638 ffff8800a834f640
 0000000081a2c470 0007ffffffffffff ffff8801cf1503d8 000000070000000c
 0000000000001af0 ffff8800a834f400 ffff8800a834f648 ffffed0015069ec7
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
 [<ffffffff815220eb>] __writeback_inodes_wb+0xfb/0x1e0 fs/fs-writeback.c:1617
 [<ffffffff815226f9>] wb_writeback+0x529/0xd00 fs/fs-writeback.c:1726
 [<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 <ffff8800a834f330>
---[ end trace d386d725c40d6cc3 ]---