shmat(0x0, &(0x7f0000ff9000/0x4000)=nil, 0x4000)
shmctl$SHM_LOCK(0x0, 0xb)
mlock2(&(0x7f0000ff9000/0x2000)=nil, 0x2000, 0x0)
shmctl$SHM_UNLOCK(0x0, 0xc)