panic: trap type 4, code=0, pc=ffffffff81e9ad75
Starting stack trace...
panic(ffffffff834f4ca4) at panic+0x1d0 sys/kern/subr_prf.c:229
kerntrap(ffff800038483410) at kerntrap+0x30b
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
malloc(10,62,2) at malloc+0x855 sys/kern/kern_malloc.c:294
amap_alloc1(20,2,0) at amap_alloc1+0x291 sys/uvm/uvm_amap.c:356
amap_alloc(20000,2,0) at amap_alloc+0xad sys/uvm/uvm_amap.c:-1
amap_copy(fffff2806cf03b88,fffff2806cc08a88,2,0,50091c63000,50091c63001) at amap_copy+0x6a8 sys/uvm/uvm_amap.c:570
uvm_fault_check(ffff8000384838e0,ffff800038483918,ffff800038483950,0) at uvm_fault_check+0x473 sys/uvm/uvm_fault.c:747
uvm_fault(fffff2806cf03b88,50091c63000,0,2) at uvm_fault+0x106 sys/uvm/uvm_fault.c:627
upageflttrap(ffff800038483a80,50091c63af8) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:194
usertrap(ffff800038483a80) at usertrap+0x430 sys/arch/amd64/amd64/trap.c:648
recall_trap() at recall_trap+0x8
end trace frame: 0x0, count: 245
End of stack trace.