[PATCH 6/6] audit: send multicast messages only if there are listeners

Test first to see if there are any userspace multicast listeners bound to the socket before starting the multicast send work. Signed-off-by: Richard Guy Briggs <rbriggs(a)redhat.com&gt; --- kernel/audit.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/kernel/audit.c b/kernel/audit.c index 9eef05b..d153a6b 100644 --- a/kernel/audit.c +++ b/kernel/audit.c @@ -428,6 +428,8 @@ static void kauditd_send_multicast_skb(struct sk_buff *skb) struct sk_buff *copy; struct nlmsghdr *nlh; + if (!netlink_has_listeners(audit_sock, AUDIT_NLGRP_READLOG)) + return; /* * The seemingly wasteful skb_copy() is necessary because the original * kaudit unicast socket sends up messages with nlmsg_len set to the -- 1.8.0.2