r0 = shmget$private(0x0, 0x5000, 0x0, &(0x7f0000ffb000/0x5000)=nil)
shmat(r0, &(0x7f0000ffb000/0x2000)=nil, 0xf000)
madvise(&(0x7f0000ffc000/0x4000)=nil, 0x4000, 0x8)