SUNRPC: Don't auto-disconnect from the local rpcbind socket (00326ed6) · Commits · e / devices / android_kernel_fairphone_FP5

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@esperi.org.uk> Signed-off-by:

Trond Myklebust <Trond.Myklebust@netapp.com> Cc: Jeff Layton <jlayton@redhat.com> Cc: stable@vger.kernel.org # 3.9.x

net/sunrpc/rpcb_clnt.c

+8 −0

Original line number	Diff line number	Diff line
		@@ -238,6 +238,14 @@ static int rpcb_create_local_unix(struct net *net)
		.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;