Commit b541ca2c authored by Thomas Graf's avatar Thomas Graf Committed by David S. Miller
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[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 <>
Signed-off-by: default avatarDavid S. Miller <>
parent 18a0c236
......@@ -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;
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