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[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 <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Westphal 2007-06-23 22:59:40 -07:00 committed by David S. Miller
parent dbbeb2f991
commit 64beb8f3eb
1 changed files with 1 additions and 1 deletions
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2
net/tipc/netlink.c
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@ -60,7 +60,7 @@ static int handle_cmd(struct sk_buff *skb, struct genl_info *info)
rep_nlh = nlmsg_hdr(rep_buf); rep_nlh = nlmsg_hdr(rep_buf);
memcpy(rep_nlh, req_nlh, hdr_space); memcpy(rep_nlh, req_nlh, hdr_space);
rep_nlh->nlmsg_len = rep_buf->len; 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; return 0;