------------[ cut here ]------------ kernel BUG at fs/ext4/inode.c:2462! invalid opcode: 0000 [#1] PREEMPT SMP KASAN Modules linked in: CPU: 1 PID: 4126 Comm: kworker/u4:6 Not tainted 4.4.163+ #122 Workqueue: writeback wb_workfn (flush-8:0) task: ffff8801d21bc740 task.stack: ffff8801d2268000 RIP: 0010:[] [] mpage_prepare_extent_to_map+0x670/0x8e0 fs/ext4/inode.c:2462 RSP: 0018:ffff8801d226f330 EFLAGS: 00010293 RAX: ffff8801d21bc740 RBX: ffffea000698fc40 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff81640120 RDI: ffffea000698fc50 RBP: ffff8801d226f4e8 R08: ffff8801d21bd008 R09: 0000000000022628 R10: ffffffffffffffe8 R11: 0000000000000000 R12: 0000000000000005 R13: 00000000000000a7 R14: dffffc0000000000 R15: ffff8801d226f630 FS: 0000000000000000(0000) GS:ffff8801db700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2e02a000 CR3: 00000001c6105000 CR4: 00000000001606b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: 1ffff1003a44de74 ffff8801d226f3c0 ffff8801d226f638 ffff8801d226f640 0000000000000002 ffffffffffffffff ffff8800b841cb90 0000000e0000000c 0000000000001f61 ffff8801d226f400 ffff8801d226f648 ffffed003a44dec7 Call Trace: [] ext4_writepages+0xd4c/0x2c20 fs/ext4/inode.c:2617 [] do_writepages+0xef/0x1d0 mm/page-writeback.c:2334 [] __writeback_single_inode+0x101/0x1340 fs/fs-writeback.c:1285 [] writeback_sb_inodes+0x4ab/0xee0 fs/fs-writeback.c:1548 [] __writeback_inodes_wb+0xfb/0x1e0 fs/fs-writeback.c:1617 [] wb_writeback+0x529/0xd00 fs/fs-writeback.c:1726 [] wb_check_old_data_flush fs/fs-writeback.c:1841 [inline] [] wb_do_writeback fs/fs-writeback.c:1865 [inline] [] wb_workfn+0x966/0x1010 fs/fs-writeback.c:1894 [] process_one_work+0x824/0x1730 kernel/workqueue.c:2064 [] worker_thread+0xd9/0x1060 kernel/workqueue.c:2196 [] kthread+0x268/0x300 kernel/kthread.c:211 [] 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 [] mpage_prepare_extent_to_map+0x670/0x8e0 fs/ext4/inode.c:2462 RSP IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready ---[ end trace fe7fbfc014a07e17 ]---