Patch "rxrpc: Fix send in rxrpc_send_data_packet()" has been added to the 4.15-stable tree

Patch "rxrpc: Fix send in rxrpc_send_data_packet()" has been added to the 4.15-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    rxrpc: Fix send in rxrpc_send_data_packet()

to the 4.15-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     rxrpc-fix-send-in-rxrpc_send_data_packet.patch
and it can be found in the queue-4.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From foo@baz Tue Mar  6 19:02:56 PST 2018
From: David Howells <dhowells@redhat.com>
Date: Thu, 22 Feb 2018 14:38:14 +0000
Subject: rxrpc: Fix send in rxrpc_send_data_packet()

From: David Howells <dhowells@redhat.com>


[ Upstream commit 93c62c45ed5fad1b87e3a45835b251cd68de9c46 ]

All the kernel_sendmsg() calls in rxrpc_send_data_packet() need to send
both parts of the iov[] buffer, but one of them does not.  Fix it so that
it does.

Without this, short IPv6 rxrpc DATA packets may be seen that have the rxrpc
header included, but no payload.

Fixes: 5a924b8951f8 ("rxrpc: Don't store the rxrpc header in the Tx queue sk_buffs")
Reported-by: Marc Dionne <marc.dionne@auristor.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/rxrpc/output.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/rxrpc/output.c
+++ b/net/rxrpc/output.c
@@ -445,7 +445,7 @@ send_fragmentable:
 					(char *)&opt, sizeof(opt));
 		if (ret == 0) {
 			ret = kernel_sendmsg(conn->params.local->socket, &msg,
-					     iov, 1, iov[0].iov_len);
+					     iov, 2, len);
 
 			opt = IPV6_PMTUDISC_DO;
 			kernel_setsockopt(conn->params.local->socket,


Patches currently in stable-queue which might be from dhowells@redhat.com are

queue-4.15/rxrpc-fix-send-in-rxrpc_send_data_packet.patch