openat$procfs(0xffffffffffffff9c, &(0x7f0000000000)='/proc/sysvipc/shm\x00', 0x0, 0x0) pread64(0xffffffffffffffff, 0x0, 0x0, 0x0) setsockopt$inet6_MCAST_MSFILTER(0xffffffffffffffff, 0x29, 0x30, 0x0, 0x0)