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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: 3874 Comm: kworker/u4:4 Not tainted 4.4.162+ #118
Workqueue: writeback wb_workfn (flush-8:0)
task: ffff8801bfaa17c0 task.stack: ffff8800a5188000
RIP: 0010:[<ffffffff8163feb0>]  [<ffffffff8163feb0>] mpage_prepare_extent_to_map+0x670/0x8e0 fs/ext4/inode.c:2462
RSP: 0018:ffff8800a518f330  EFLAGS: 00010293
RAX: ffff8801bfaa17c0 RBX: ffffea000622cf80 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8163feb0 RDI: ffffea000622cf90
RBP: ffff8800a518f4e8 R08: ffff8801bfaa2088 R09: 0000000000022628
R10: ffffffffffffffe8 R11: 0000000000000000 R12: 000000000000000b
R13: 0000000000000130 R14: dffffc0000000000 R15: ffff8800a518f630
FS:  0000000000000000(0000) GS:ffff8801db700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000625208 CR3: 0000000002e0a000 CR4: 00000000001606b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 1ffff10014a31e74 ffff8800a518f3c0 ffff8800a518f638 ffff8800a518f640
 00000000a518f400 ffffffffffffffff ffff8801cf0f0bd0 0000000e0000000c
 0000000000001ed2 ffff8800a518f400 ffff8800a518f648 ffffed0014a31ec7
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
 [<ffffffff81525376>] wb_check_old_data_flush fs/fs-writeback.c:1841 [inline]
 [<ffffffff81525376>] wb_do_writeback fs/fs-writeback.c:1865 [inline]
 [<ffffffff81525376>] wb_workfn+0x966/0x1010 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
 [<ffffffff82712305>] 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 <ffff8800a518f330>
---[ end trace e80080ae831be4fd ]---