shmat(0x0, &(0x7f0000ffe000/0x2000)=nil, 0x7000)
mlock(&(0x7f0000ffc000/0x3000)=nil, 0x3000)
madvise(&(0x7f0000ffc000/0x4000)=nil, 0x4000, 0x1)
munmap(&(0x7f0000ff8000/0x8000)=nil, 0x8000)