shmat(0x0, &(0x7f0000ffc000/0x1000)=nil, 0x4000)
mlock(&(0x7f0000ffc000/0x4000)=nil, 0x4000)
remap_file_pages(&(0x7f0000ffc000/0x4000)=nil, 0x4000, 0x0, 0x0, 0x0)