==222== Syscall param socketcall.sendto(msg) points to uninitialised byte(s)
==222==    at 0x57835DC: send (send.c:33)
==222==    by 0x405244: test (test.c:154)
==222==    by 0x5A54E99: start_thread (pthread_create.c:308)
==222==  Address 0x5e7b6b4 is 20 bytes inside a block of size 24 alloc'd
==222==    at 0x4C2B6CD: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==222==    by 0x5A54E99: start_thread (pthread_create.c:308)
==222==