r0 = shmget$private(0x0, 0x5000, 0x1800, &(0x7f0000ffb000/0x5000)=nil)
shmat(r0, &(0x7f0000400000/0xc00000)=nil, 0x5000)
mprotect(&(0x7f0000401000/0x2000)=nil, 0x2000, 0x0)