From 64beb8f3eb3c724add64ca3272915528e10213c1 Mon Sep 17 00:00:00 2001 From: Florian Westphal Date: Sat, 23 Jun 2007 22:59:40 -0700 Subject: [PATCH] [TIPC]: Fix infinite loop in netlink handler The tipc netlink config handler uses the nlmsg_pid from the request header as destination for its reply. If the application initialized nlmsg_pid to 0, the reply is looped back to the kernel, causing hangup. Fix: use nlmsg_pid of the skb that triggered the request. Signed-off-by: Florian Westphal Signed-off-by: David S. Miller --- net/tipc/netlink.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/tipc/netlink.c b/net/tipc/netlink.c index 4cdafa2d1d4..6a7f7b4c259 100644 --- a/net/tipc/netlink.c +++ b/net/tipc/netlink.c @@ -60,7 +60,7 @@ static int handle_cmd(struct sk_buff *skb, struct genl_info *info) rep_nlh = nlmsg_hdr(rep_buf); memcpy(rep_nlh, req_nlh, hdr_space); rep_nlh->nlmsg_len = rep_buf->len; - genlmsg_unicast(rep_buf, req_nlh->nlmsg_pid); + genlmsg_unicast(rep_buf, NETLINK_CB(skb).pid); } return 0; -- 2.41.0