This is a note to let you know that I've just added the patch titled
SUNRPC: Don't auto-disconnect from the local rpcbind socket
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:
sunrpc-don-t-auto-disconnect-from-the-local-rpcbind-socket.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 00326ed6442c66021cd4b5e19e80f3e2027d5d42 Mon Sep 17 00:00:00 2001
From: Trond Myklebust <Trond.Myklebust@xxxxxxxxxx>
Date: Mon, 5 Aug 2013 14:10:43 -0400
Subject: SUNRPC: Don't auto-disconnect from the local rpcbind socket
From: Trond Myklebust <Trond.Myklebust@xxxxxxxxxx>
commit 00326ed6442c66021cd4b5e19e80f3e2027d5d42 upstream.
There is no need for the kernel to time out the AF_LOCAL connection to
the rpcbind socket, and doing so is problematic because when it is
time to reconnect, our process may no longer be using the same mount
namespace.
Reported-by: Nix <nix@xxxxxxxxxxxxx>
Signed-off-by: Trond Myklebust <Trond.Myklebust@xxxxxxxxxx>
Cc: Jeff Layton <jlayton@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/sunrpc/rpcb_clnt.c | 8 ++++++++
1 file changed, 8 insertions(+)
--- a/net/sunrpc/rpcb_clnt.c
+++ b/net/sunrpc/rpcb_clnt.c
@@ -238,6 +238,14 @@ static int rpcb_create_local_unix(struct
.program = &rpcb_program,
.version = RPCBVERS_2,
.authflavor = RPC_AUTH_NULL,
+ /*
+ * We turn off the idle timeout to prevent the kernel
+ * from automatically disconnecting the socket.
+ * Otherwise, we'd have to cache the mount namespace
+ * of the caller and somehow pass that to the socket
+ * reconnect code.
+ */
+ .flags = RPC_CLNT_CREATE_NO_IDLE_TIMEOUT,
};
struct rpc_clnt *clnt, *clnt4;
int result = 0;
Patches currently in stable-queue which might be from Trond.Myklebust@xxxxxxxxxx are
queue-3.10/lockd-don-t-call-utsname-nodename-from-nlmclnt_setlockargs.patch
queue-3.10/sunrpc-if-the-rpcbind-channel-is-disconnected-fail-the-call-to-unregister.patch
queue-3.10/sunrpc-don-t-auto-disconnect-from-the-local-rpcbind-socket.patch
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