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net: ncsi: fix a missing check for nla_nest_start

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nla_nest_start may fail and thus deserves a check.

The fix returns -EMSGSIZE in case it fails.

Signed-off-by: Kangjie Lu <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Kangjie Lu authored and David S. Miller committed 2019-03-16 11:44:33 -07:00
1 parent 0fff9bd47e
commit 07660ca679
1 file changed
+4
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net/ncsi/ncsi-netlink.c
+4
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@@ -251,6 +251,10 @@ static int ncsi_pkg_info_all_nl(struct sk_buff *skb,
}
attr = nla_nest_start(skb, NCSI_ATTR_PACKAGE_LIST);
if (!attr) {
rc = -EMSGSIZE;
goto err;
}
rc = ncsi_write_package_info(skb, ndp, package->id);
if (rc) {
nla_nest_cancel(skb, attr);