This is a note to let you know that I've just added the patch titled
rxrpc: bogus MSG_PEEK test in rxrpc_recvmsg()
to the 3.10-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-bogus-msg_peek-test-in-rxrpc_recvmsg.patch
and it can be found in the queue-3.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Tue Mar 24 11:01:55 CET 2015
From: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Date: Sat, 14 Mar 2015 05:34:56 +0000
Subject: rxrpc: bogus MSG_PEEK test in rxrpc_recvmsg()
From: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
[ Upstream commit 7d985ed1dca5c90535d67ce92ef6ca520302340a ]
[I would really like an ACK on that one from dhowells; it appears to be
quite straightforward, but...]
MSG_PEEK isn't passed to ->recvmsg() via msg->msg_flags; as the matter of
fact, neither the kernel users of rxrpc, nor the syscalls ever set that bit
in there. It gets passed via flags; in fact, another such check in the same
function is done correctly - as flags & MSG_PEEK.
It had been that way (effectively disabled) for 8 years, though, so the patch
needs beating up - that case had never been tested. If it is correct, it's
-stable fodder.
Signed-off-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/rxrpc/ar-recvmsg.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/rxrpc/ar-recvmsg.c
+++ b/net/rxrpc/ar-recvmsg.c
@@ -87,7 +87,7 @@ int rxrpc_recvmsg(struct kiocb *iocb, st
if (!skb) {
/* nothing remains on the queue */
if (copied &&
- (msg->msg_flags & MSG_PEEK || timeo == 0))
+ (flags & MSG_PEEK || timeo == 0))
goto out;
/* wait for a message to turn up */
Patches currently in stable-queue which might be from viro@xxxxxxxxxxxxxxxxxx are
queue-3.10/caif-fix-msg_oob-test-in-caif_seqpkt_recvmsg.patch
queue-3.10/rxrpc-bogus-msg_peek-test-in-rxrpc_recvmsg.patch
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