mlock2(&(0x7f0000ffc000/0x4000)=nil, 0x4000, 0x0)
mlock2(&(0x7f0000ffc000/0x2000)=nil, 0x2000, 0x1)
mlock2(&(0x7f0000ffc000/0x2000)=nil, 0x2000, 0x0)