mmap(&(0x7f0000000000/0x2000)=nil, 0x2000, 0x0, 0x44032, 0xffffffffffffffff, 0x0)
mremap(&(0x7f0000001000/0x1000)=nil, 0x1000, 0x1000, 0x7, &(0x7f0000002000/0x1000)=nil)