connector: use nlmsg_len() to check message length
The current code tests the length of the whole netlink message to be at least as long to fit a cn_msg. This is wrong as nlmsg_len includes the length of the netlink message header. Use nlmsg_len() instead to fix this "off-by-NLMSG_HDRLEN" size check. Cc: stable@vger.kernel.org # v2.6.14+ Signed-off-by: Mathias Krause <minipli@googlemail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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