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| author | David S. Miller <davem@sunset.davemloft.net> | 2005-05-04 00:30:05 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2005-05-04 00:30:05 +0200 |
| commit | 09e14305982efc2f3b509d3c50ef5dcbff64a998 (patch) | |
| tree | 7829c8b212a84e793ebf2d5bd0ceb68283c7b79e | |
| parent | [NETLINK]: Synchronous message processing. (diff) | |
| download | linux-09e14305982efc2f3b509d3c50ef5dcbff64a998.tar.xz linux-09e14305982efc2f3b509d3c50ef5dcbff64a998.zip | |
[NETLINK]: Fix infinite loops in synchronous netlink changes.
The qlen should continue to decrement, even if we
pop partially processed SKBs back onto the receive queue.
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/core/rtnetlink.c | 7 | ||||
| -rw-r--r-- | net/decnet/netfilter/dn_rtmsg.c | 2 | ||||
| -rw-r--r-- | net/xfrm/xfrm_user.c | 7 |
3 files changed, 7 insertions, 9 deletions
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index 6e1ab1e34b2e..75b6d33b5292 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -626,14 +626,13 @@ static void rtnetlink_rcv(struct sock *sk, int len) if (qlen > skb_queue_len(&sk->sk_receive_queue)) qlen = skb_queue_len(&sk->sk_receive_queue); - while (qlen--) { + for (; qlen; qlen--) { skb = skb_dequeue(&sk->sk_receive_queue); if (rtnetlink_rcv_skb(skb)) { - if (skb->len) { + if (skb->len) skb_queue_head(&sk->sk_receive_queue, skb); - qlen++; - } else + else kfree_skb(skb); break; } diff --git a/net/decnet/netfilter/dn_rtmsg.c b/net/decnet/netfilter/dn_rtmsg.c index 101ddef9ba9a..284a9998e53d 100644 --- a/net/decnet/netfilter/dn_rtmsg.c +++ b/net/decnet/netfilter/dn_rtmsg.c @@ -121,7 +121,7 @@ static void dnrmg_receive_user_sk(struct sock *sk, int len) struct sk_buff *skb; unsigned int qlen = skb_queue_len(&sk->sk_receive_queue); - while (qlen-- && (skb = skb_dequeue(&sk->sk_receive_queue))) { + for (; qlen && (skb = skb_dequeue(&sk->sk_receive_queue)); qlen--) { dnrmg_receive_user_skb(skb); kfree_skb(skb); } diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c index dab112f1dd8a..e8740a4a1d78 100644 --- a/net/xfrm/xfrm_user.c +++ b/net/xfrm/xfrm_user.c @@ -1018,14 +1018,13 @@ static void xfrm_netlink_rcv(struct sock *sk, int len) if (qlen > skb_queue_len(&sk->sk_receive_queue)) qlen = skb_queue_len(&sk->sk_receive_queue); - while (qlen--) { + for (; qlen; qlen--) { skb = skb_dequeue(&sk->sk_receive_queue); if (xfrm_user_rcv_skb(skb)) { - if (skb->len) { + if (skb->len) skb_queue_head(&sk->sk_receive_queue, skb); - qlen++; - } else + else kfree_skb(skb); break; } |