From: Tomas Hozza <thozza@redhat.com>
Date: Wed, 13 Mar 2013 13:14:14 +0000 (+0100)
Subject: tools: hv: daemon should check type of received Netlink msg
X-Git-Tag: firefly_0821_release~3680^2~676^2~116
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=75db601496e97ffa2476dcd00053c0ca95e977a5;p=firefly-linux-kernel-4.4.55.git

tools: hv: daemon should check type of received Netlink msg

HyperV KVP daemon should check nlmsg_type in received netlink message
header. If message type is NLMSG_DONE daemon can proceed with processing
otherwise it should wait for next message.

Signed-off-by: Tomas Hozza <thozza@redhat.com>
Acked-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/tools/hv/hv_kvp_daemon.c b/tools/hv/hv_kvp_daemon.c
index 704a0f9a063d..5a1f6489d185 100644
--- a/tools/hv/hv_kvp_daemon.c
+++ b/tools/hv/hv_kvp_daemon.c
@@ -1503,6 +1503,10 @@ int main(void)
 		}
 
 		incoming_msg = (struct nlmsghdr *)kvp_recv_buffer;
+
+		if (incoming_msg->nlmsg_type != NLMSG_DONE)
+			continue;
+
 		incoming_cn_msg = (struct cn_msg *)NLMSG_DATA(incoming_msg);
 		hv_msg = (struct hv_kvp_msg *)incoming_cn_msg->data;