r0 = openat$zero(0xffffffffffffff9c, &(0x7f0000000040), 0x0, 0x0)
mmap$IORING_OFF_CQ_RING(&(0x7f0000400000/0xc00000)=nil, 0xc00000, 0x0, 0x12, r0, 0x8000000)