kernel BUG at fs/ext4/inode.c:2462! invalid opcode: 0000 [#1] PREEMPT SMP KASAN Modules linked in: CPU: 0 PID: 6 Comm: kworker/u4:0 Not tainted 4.4.162+ #113 Workqueue: writeback wb_workfn (flush-8:0) task: ffff8801da648000 task.stack: ffff8801da650000 RIP: 0010:[] [] mpage_prepare_extent_to_map+0x670/0x8e0 fs/ext4/inode.c:2462 RSP: 0018:ffff8801da657390 EFLAGS: 00010293 RAX: ffff8801da648000 RBX: ffffea0006ee7b80 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8163feb0 RDI: ffffea0006ee7b90 RBP: ffff8801da657548 R08: ffff8801da6488c8 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000001 R14: dffffc0000000000 R15: ffff8801da657690 FS: 0000000000000000(0000) GS:ffff8801db600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7af5201518 CR3: 00000000a785f000 CR4: 00000000001606b0 Stack: 1ffff1003b4cae80 ffff8801da657420 ffff8801da657698 ffff8801da6576a0 00000002b87a53b8 0007ffffffffffff ffff8800b87a5388 000000090000000c 7fffffffffffffff ffff8801da657460 ffff8801da6576a8 ffffed003b4caed3 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 [] wb_writeback+0x2e1/0xd00 fs/fs-writeback.c:1724 [] wb_do_writeback fs/fs-writeback.c:1858 [inline] [] wb_workfn+0x243/0x1010 fs/fs-writeback.c:1894 [] process_one_work+0x824/0x1670 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 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 [] mpage_prepare_extent_to_map+0x670/0x8e0 fs/ext4/inode.c:2462 RSP binder: undelivered TRANSACTION_ERROR: 29189 ---[ end trace c828fb47543474ca ]---