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From: Andrei Vagin <avagin@gmail.com>
Newsgroups: gmane.linux.lib.musl.general
Subject: Need to zero pads in msghdr
Date: Wed, 25 Jan 2017 08:42:52 -0800
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Xref: news.gmane.org gmane.linux.lib.musl.general:10960
Archived-At: <http://permalink.gmane.org/gmane.linux.lib.musl.general/10960>

Hi,

In this patch
http://git.musl-libc.org/cgit/musl/commit/arch/x86_64/bits/socket.h?id=7168790763cdeb794df52be6e3b39fbb021c5a64
you suppose that the kernel ignores the upper 32 bits of msg_iovlen,
but it doesn't, so pads in msghdr structures have to be zeroed before
calling sendmsg and recvmsg syscalls.

https://github.com/xemul/criu/issues/276

Thanks,
Andrei