linux-kernel - [PATCH net 2/6] rxrpc: Need to flag call as being released on connect failure

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Message-ID: <147076040590.13232.15006934873155574657.stgit@warthog.procyon.org.uk>
Date:	Tue, 09 Aug 2016 17:33:25 +0100
From:	David Howells <dhowells@...hat.com>
To:	netdev@...r.kernel.org
Cc:	dhowells@...hat.com, linux-afs@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH net 2/6] rxrpc: Need to flag call as being released on
 connect failure

If rxrpc_new_client_call() fails to make a connection, the call record that
it allocated needs to be marked as RXRPC_CALL_RELEASED before it is passed
to rxrpc_put_call() to indicate that it no longer has any attachment to the
AF_RXRPC socket.

Without this, an assertion failure may occur at:

	net/rxrpc/call_object:635

Signed-off-by: David Howells <dhowells@...hat.com>
---

 net/rxrpc/call_object.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/rxrpc/call_object.c b/net/rxrpc/call_object.c
index e8c953c48cb8..ae057e0740f3 100644
--- a/net/rxrpc/call_object.c
+++ b/net/rxrpc/call_object.c
@@ -275,6 +275,7 @@ error:
 	list_del_init(&call->link);
 	write_unlock_bh(&rxrpc_call_lock);
 
+	set_bit(RXRPC_CALL_RELEASED, &call->flags);
 	call->state = RXRPC_CALL_DEAD;
 	rxrpc_put_call(call);
 	_leave(" = %d", ret);
@@ -287,6 +288,7 @@ error:
 	 */
 found_user_ID_now_present:
 	write_unlock(&rx->call_lock);
+	set_bit(RXRPC_CALL_RELEASED, &call->flags);
 	call->state = RXRPC_CALL_DEAD;
 	rxrpc_put_call(call);
 	_leave(" = -EEXIST [%p]", call);