mremap(&(0x7f0000ffb000/0x2000)=nil, 0x2000, 0x1000, 0x3, &(0x7f0000fff000/0x1000)=nil)
mbind(&(0x7f0000ffb000/0x3000)=nil, 0x3000, 0x1, 0x0, 0x0, 0x0)