Commit b541ca2c authored by Thomas Graf's avatar Thomas Graf Committed by David S. Miller
Browse files

[PKT_SCHED]: Correctly handle empty ematch trees 



Fixes an invalid memory reference when the basic classifier
is used without any ematches but just actions.

Signed-off-by: default avatarThomas Graf <tgraf@suug.ch>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 18a0c236

net/sched/ematch.c

+5 −0
Original line number Diff line number Diff line
@@ -298,6 +298,11 @@ int tcf_em_tree_validate(struct tcf_proto *tp, struct rtattr *rta, 
	struct tcf_ematch_tree_hdr *tree_hdr;

	struct tcf_ematch *em;



	if (!rta) {

		memset(tree, 0, sizeof(*tree));

		return 0;

	}



	if (rtattr_parse_nested(tb, TCA_EMATCH_TREE_MAX, rta) < 0)

		goto errout;