Syscall param sendfilev(vec[0].sfv_off points to unaddressable byte(s)
   ...
   by 0x........: main (sendfilev.c:54)
 Address 0x........ is not stack'd, malloc'd or (recently) free'd

Syscall param sendfilev(vec) points to uninitialised byte(s)
   ...
   by 0x........: main (sendfilev.c:65)
 Address 0x........ is on thread 1's stack
 in frame #., created by main (sendfilev.c:15)

