Syscall param sendmsg(msg) points to uninitialised byte(s)
   at 0x........: __so_sendmsg (in /...libc...)
   by 0x........: __xnet_sendmsg (in /...libc...)
   by 0x........: main (sendmsg.c:46)
 Address 0x........ is on thread 1's stack
 in frame #2, created by main (sendmsg.c:13)

sendmsg: 6