rtsock: Avoid copying uninitialized padding bytes

When copying sockaddrs out to userspace, we pad them to a multiple of
the platform alignment (sizeof(long)).  However, some sockaddr sizes,
such as struct sockaddr_dl, are not an integer multiple of the
alignment, so we may end up copying out uninitialized bytes.

Fix this by always bouncing through a pre-zeroed sockaddr_storage.

Reported by:	KASAN
Reviewed by:	melifaro
MFC after:	3 days
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D27729

0 files changed, 0 insertions, 0 deletions