mmap(&(0x7f0000000000/0x3000)=nil, 0x3000, 0x0, 0x44031, 0xffffffffffffffff, 0x0)
mremap(&(0x7f0000000000/0x3000)=nil, 0x3000, 0xd000, 0x0, &(0x7f0000000000/0xd000)=nil)