r0 = shmget$private(0x0, 0x4000, 0x0, &(0x7f0000ffc000/0x4000)=nil)
shmat(r0, &(0x7f0000000000/0x4000)=nil, 0x7000)
futex(&(0x7f0000000040), 0x3, 0x0, 0x0, &(0x7f00000000c0), 0x0)