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alistair23-linux
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netlink: set bad attribute also on maxtype check 

The check that attribute type is within 0...maxtype range in
__nla_validate_parse() sets only error message but not bad_attr in extack.
Set also bad_attr to tell userspace which attribute failed validation.

Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Reviewed-by: Johannes Berg <johannes@sipsolutions.net>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.2
Michal Kubecek 2019-05-02 16:15:10 +02:00 committed by David S. Miller
parent 05d7f547be
commit d54a16b201
1 changed files with 2 additions and 1 deletions
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3
lib/nlattr.c
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@ -356,7 +356,8 @@ static int __nla_validate_parse(const struct nlattr *head, int len, int maxtype,
if (type == 0 || type > maxtype) {
if (validate & NL_VALIDATE_MAXTYPE) {
NL_SET_ERR_MSG(extack, "Unknown attribute type");
NL_SET_ERR_MSG_ATTR(extack, nla,
"Unknown attribute type");
return -EINVAL;
}
continue;