sctp: add a checking for sctp_sysctl_net_register

When register_net_sysctl failed, we should free the
sysctl_table.

Signed-off-by: Wang Weidong <wangweidong1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/sctp/sysctl.c b/net/sctp/sysctl.c
index ee80eb4..7e5eb75 100644 (file)
--- a/net/sctp/sysctl.c
+++ b/net/sctp/sysctl.c
@@ -447,6 +447,10 @@ int sctp_sysctl_net_register(struct net *net)
                table[i].data += (char *)(&net->sctp) - (char *)&init_net.sctp;
 
        net->sctp.sysctl_header = register_net_sysctl(net, "net/sctp", table);
+       if (net->sctp.sysctl_header == NULL) {
+               kfree(table);
+               return -ENOMEM;
+       }
        return 0;
 }