panic: pmap_growkernel: no memory to grow kernel
cpuid = 0
time = 4127
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe002ae86260
vpanic() at vpanic+0x1e0/frame 0xfffffe002ae862c0
panic() at panic+0x43/frame 0xfffffe002ae86320
pmap_growkernel() at pmap_growkernel+0x4b6/frame 0xfffffe002ae86360
vm_map_insert() at vm_map_insert+0x3a2/frame 0xfffffe002ae86420
vm_map_find() at vm_map_find+0x9e1/frame 0xfffffe002ae86510
kva_import() at kva_import+0x5f/frame 0xfffffe002ae86560
vmem_xalloc() at vmem_xalloc+0x711/frame 0xfffffe002ae86650
vmem_alloc() at vmem_alloc+0xe3/frame 0xfffffe002ae866b0
kva_alloc() at kva_alloc+0x37/frame 0xfffffe002ae866e0
vm_thread_new() at vm_thread_new+0x132/frame 0xfffffe002ae86830
thread_alloc() at thread_alloc+0x4f/frame 0xfffffe002ae86860
fork1() at fork1+0x402/frame 0xfffffe002ae86920
sys_pdfork() at sys_pdfork+0x62/frame 0xfffffe002ae86980
amd64_syscall() at amd64_syscall+0x436/frame 0xfffffe002ae86ab0
fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe002ae86ab0
--- syscall (518, FreeBSD ELF64, sys_pdfork), rip = 0x20000205, rsp = 0x7fffdfffdeb8, rbp = 0xa ---
KDB: enter: panic
[ thread pid 11815 tid 101846 ]
Stopped at      kdb_enter+0x6a: movq    $0,kdb_why