trace: Fix for memleak in trace_alloc_list() error path

The allocated 'list_expr' may leak.

Fixes: cfd768615235b ("src: add conntrack information to trace monitor mode")
Signed-off-by: Phil Sutter <phil@nwl.cc>
Reviewed-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Florian Westphal <fw@strlen.de>

diff --git a/src/trace.c b/src/trace.c
index b270951025b8854fbf40e27f25f805e5c85a87a4..47f4c2159421e49708a504160f58bc3fc446521f 100644 (file)
--- a/src/trace.c
+++ b/src/trace.c
@@ -258,6 +258,7 @@ static struct expr *trace_alloc_list(const struct datatype *dtype,
        v = mpz_get_uint32(value);
        if (v == 0) {
                mpz_clear(value);
+               expr_free(list_expr);
                return NULL;
        }