r0 = shmget$private(0x0, 0x5000, 0x0, &(0x7f0000ffb000/0x5000)=nil)
shmat(r0, &(0x7f0000ffc000/0x1000)=nil, 0x4000)
shmctl$SHM_LOCK(r0, 0xb)
mlock(&(0x7f0000fff000/0x1000)=nil, 0x1000)
shmctl$SHM_UNLOCK(r0, 0xc)