r0 = openat$procfs(0xffffffffffffff9c, &(0x7f00000002c0)='/proc/sysvipc/msg\x00', 0x0, 0x0)
mmap$IORING_OFF_CQ_RING(&(0x7f0000ffc000/0x1000)=nil, 0x1000, 0x0, 0x10, r0, 0x8000000)