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-rw-r--r--net/netlink/af_netlink.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index 9eb895c7a2a9..6ee69c27f806 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -950,6 +950,7 @@ struct netlink_broadcast_data {
950 u32 pid; 950 u32 pid;
951 u32 group; 951 u32 group;
952 int failure; 952 int failure;
953 int delivery_failure;
953 int congested; 954 int congested;
954 int delivered; 955 int delivered;
955 gfp_t allocation; 956 gfp_t allocation;
@@ -999,6 +1000,7 @@ static inline int do_one_broadcast(struct sock *sk,
999 p->skb2 = NULL; 1000 p->skb2 = NULL;
1000 } else if ((val = netlink_broadcast_deliver(sk, p->skb2)) < 0) { 1001 } else if ((val = netlink_broadcast_deliver(sk, p->skb2)) < 0) {
1001 netlink_overrun(sk); 1002 netlink_overrun(sk);
1003 p->delivery_failure = 1;
1002 } else { 1004 } else {
1003 p->congested |= val; 1005 p->congested |= val;
1004 p->delivered = 1; 1006 p->delivered = 1;
@@ -1025,6 +1027,7 @@ int netlink_broadcast(struct sock *ssk, struct sk_buff *skb, u32 pid,
1025 info.pid = pid; 1027 info.pid = pid;
1026 info.group = group; 1028 info.group = group;
1027 info.failure = 0; 1029 info.failure = 0;
1030 info.delivery_failure = 0;
1028 info.congested = 0; 1031 info.congested = 0;
1029 info.delivered = 0; 1032 info.delivered = 0;
1030 info.allocation = allocation; 1033 info.allocation = allocation;
@@ -1045,13 +1048,14 @@ int netlink_broadcast(struct sock *ssk, struct sk_buff *skb, u32 pid,
1045 if (info.skb2) 1048 if (info.skb2)
1046 kfree_skb(info.skb2); 1049 kfree_skb(info.skb2);
1047 1050
1051 if (info.delivery_failure || info.failure)
1052 return -ENOBUFS;
1053
1048 if (info.delivered) { 1054 if (info.delivered) {
1049 if (info.congested && (allocation & __GFP_WAIT)) 1055 if (info.congested && (allocation & __GFP_WAIT))
1050 yield(); 1056 yield();
1051 return 0; 1057 return 0;
1052 } 1058 }
1053 if (info.failure)
1054 return -ENOBUFS;
1055 return -ESRCH; 1059 return -ESRCH;
1056} 1060}
1057EXPORT_SYMBOL(netlink_broadcast); 1061EXPORT_SYMBOL(netlink_broadcast);