panic: vm_page_swapqueue: page 0xfffffe00007a7c00 is unmanaged cpuid = 0 time = 1569014753 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe0019fdf510 vpanic() at vpanic+0x1e0/frame 0xfffffe0019fdf570 panic() at panic+0x43/frame 0xfffffe0019fdf5d0 vm_page_swapqueue() at vm_page_swapqueue+0x2b6/frame 0xfffffe0019fdf630 vm_pageout_worker() at vm_pageout_worker+0x1963/frame 0xfffffe0019fdfa20 vm_pageout() at vm_pageout+0x20e/frame 0xfffffe0019fdfa60 fork_exit() at fork_exit+0xb0/frame 0xfffffe0019fdfab0 fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe0019fdfab0 --- trap 0, rip = 0, rsp = 0, rbp = 0 --- KDB: enter: panic [ thread pid 17 tid 100061 ] Stopped at kdb_enter+0x6a: movq $0,kdb_why