switch cmsghdr_from_user_compat_to_kern() to copy_from_user()

no point getting compat_cmsghdr field-by-field

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Al Viro 2020-05-31 02:06:55 +01:00 • committed by David S. Miller
commit 547ce4cfb3