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Diffstat (limited to 'kernel/audit.c')
-rw-r--r--kernel/audit.c19
1 files changed, 8 insertions, 11 deletions
diff --git a/kernel/audit.c b/kernel/audit.c
index 0f84dd7af2c8..ac26d4d960d3 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -427,7 +427,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
/* Get message from skb (based on rtnetlink_rcv_skb). Each message is
* processed by audit_receive_msg. Malformed skbs with wrong length are
* discarded silently. */
-static int audit_receive_skb(struct sk_buff *skb)
+static void audit_receive_skb(struct sk_buff *skb)
{
int err;
struct nlmsghdr *nlh;
@@ -436,7 +436,7 @@ static int audit_receive_skb(struct sk_buff *skb)
while (skb->len >= NLMSG_SPACE(0)) {
nlh = (struct nlmsghdr *)skb->data;
if (nlh->nlmsg_len < sizeof(*nlh) || skb->len < nlh->nlmsg_len)
- return 0;
+ return;
rlen = NLMSG_ALIGN(nlh->nlmsg_len);
if (rlen > skb->len)
rlen = skb->len;
@@ -446,23 +446,20 @@ static int audit_receive_skb(struct sk_buff *skb)
netlink_ack(skb, nlh, 0);
skb_pull(skb, rlen);
}
- return 0;
}
/* Receive messages from netlink socket. */
static void audit_receive(struct sock *sk, int length)
{
struct sk_buff *skb;
+ unsigned int qlen;
- if (down_trylock(&audit_netlink_sem))
- return;
+ down(&audit_netlink_sem);
- /* FIXME: this must not cause starvation */
- while ((skb = skb_dequeue(&sk->sk_receive_queue))) {
- if (audit_receive_skb(skb) && skb->len)
- skb_queue_head(&sk->sk_receive_queue, skb);
- else
- kfree_skb(skb);
+ for (qlen = skb_queue_len(&sk->sk_receive_queue); qlen; qlen--) {
+ skb = skb_dequeue(&sk->sk_receive_queue);
+ audit_receive_skb(skb);
+ kfree_skb(skb);
}
up(&audit_netlink_sem);
}