[PATCH net-next 3/5] rxrpc: When clearing a socket, clear the call sets in the right order

From: David Howells
Date: Tue Aug 23 2016 - 11:27:52 EST


When clearing a socket, we should clear the securing-in-progress list
first, then the accept queue and last the main call tree because that's the
order in which a call progresses. Not that a call should move from the
accept queue to the main tree whilst we're shutting down a socket, but it a
call could possibly move from sequreq to acceptq whilst we're clearing up.

Signed-off-by: David Howells <dhowells@xxxxxxxxxx>
---

net/rxrpc/call_object.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/net/rxrpc/call_object.c b/net/rxrpc/call_object.c
index 5007e7ac889f..008188103fd6 100644
--- a/net/rxrpc/call_object.c
+++ b/net/rxrpc/call_object.c
@@ -564,12 +564,6 @@ void rxrpc_release_calls_on_socket(struct rxrpc_sock *rx)

read_lock_bh(&rx->call_lock);

- /* mark all the calls as no longer wanting incoming packets */
- for (p = rb_first(&rx->calls); p; p = rb_next(p)) {
- call = rb_entry(p, struct rxrpc_call, sock_node);
- rxrpc_mark_call_released(call);
- }
-
/* kill the not-yet-accepted incoming calls */
list_for_each_entry(call, &rx->secureq, accept_link) {
rxrpc_mark_call_released(call);
@@ -579,6 +573,12 @@ void rxrpc_release_calls_on_socket(struct rxrpc_sock *rx)
rxrpc_mark_call_released(call);
}

+ /* mark all the calls as no longer wanting incoming packets */
+ for (p = rb_first(&rx->calls); p; p = rb_next(p)) {
+ call = rb_entry(p, struct rxrpc_call, sock_node);
+ rxrpc_mark_call_released(call);
+ }
+
read_unlock_bh(&rx->call_lock);
_leave("");
}