r0 = openat$procfs(0xffffffffffffff9c, &(0x7f0000000b40)='/proc/sysvipc/msg\x00', 0x0, 0x0)
mmap$IORING_OFF_CQ_RING(&(0x7f0000ff4000/0x3000)=nil, 0x3000, 0x0, 0x12, r0, 0x8000000)