I'm using Ubuntu 14.10 dev with libc6-dev 2.19-0ubuntu6 and valgrind 1:3.10~20140411-0ubuntu1 and the error message doesn't appear anymore.
** Changed in: glibc (Ubuntu) Status: Confirmed => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1096826 Title: Syscall param sendmsg(mmsg[0].msg_hdr) points to uninitialised byte(s) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/glibc/+bug/1096826/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs