On Thu, May 8, 2014 at 3:55 PM, Wang Weidong <wangweidong1@xxxxxxxxxx> wrote:
> When register_net_sysctl failed, we should free the
> sysctl_table while the net_namespace is not init_net.
>
> Signed-off-by: Wang Weidong <wangweidong1@xxxxxxxxxx>
> ---
> net/sctp/sysctl.c | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/net/sctp/sysctl.c b/net/sctp/sysctl.c
> index 844d2b0..4c17694 100644
> --- a/net/sctp/sysctl.c
> +++ b/net/sctp/sysctl.c
> @@ -450,6 +450,11 @@ int sctp_sysctl_net_register(struct net *net)
> }
>
> net->sctp.sysctl_header = register_net_sysctl(net, "net/sctp", table);
> + if (net->sctp.sysctl_header == NULL) {
> + if (!net_eq(net, &init_net))
> + kfree(table);
> + return -ENOMEM;
> + }
> return 0;
> }
>
Hope to resolve the problem of sctp_sysctl_net_unregister() in one patch!
kfree(table) should check net namesapce.
diff --git a/net/sctp/sysctl.c b/net/sctp/sysctl.c
index c82fdc1..844d2b0 100644
--- a/net/sctp/sysctl.c
+++ b/net/sctp/sysctl.c
@@ -459,7 +459,8 @@ void sctp_sysctl_net_unregister(struct net *net)
table = net->sctp.sysctl_header->ctl_table_arg;
unregister_net_sysctl_table(net->sctp.sysctl_header);
- kfree(table);
+ if (!net_eq(net, &init_net))
+ kfree(table);
}
static struct ctl_table_header *sctp_sysctl_header;
Thanks
Tingwei Liu
> --
> 1.7.12
>
>
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