From b6f3a40cb70fa53a5160b8f061ff219b00992626 Mon Sep 17 00:00:00 2001 From: Tim Smith Date: Fri, 7 Feb 2014 18:58:43 +0000 Subject: af_rxrpc: Prevent RxRPC peers from ABORT-storming one another When an ABORT is sent, aborting a connection, the sender quite reasonably forgets about the connection. If another frame is received, another ABORT will be sent. When the receiver gets it, it no longer applies to an extant connection, so an ABORT is sent, and so on... Prevent this by never sending a rejection for an ABORT packet. Signed-off-by: Tim Smith Signed-off-by: David Howells diff --git a/net/rxrpc/ar-input.c b/net/rxrpc/ar-input.c index 529572f..eb7e162 100644 --- a/net/rxrpc/ar-input.c +++ b/net/rxrpc/ar-input.c @@ -606,8 +606,10 @@ dead_call: } _debug("dead call"); - skb->priority = RX_CALL_DEAD; - rxrpc_reject_packet(conn->trans->local, skb); + if (sp->hdr.type != RXRPC_PACKET_TYPE_ABORT) { + skb->priority = RX_CALL_DEAD; + rxrpc_reject_packet(conn->trans->local, skb); + } goto done; /* resend last packet of a completed call @@ -790,8 +792,10 @@ cant_route_call: skb->priority = RX_CALL_DEAD; } - _debug("reject"); - rxrpc_reject_packet(local, skb); + if (sp->hdr.type != RXRPC_PACKET_TYPE_ABORT) { + _debug("reject type %d",sp->hdr.type); + rxrpc_reject_packet(local, skb); + } rxrpc_put_local(local); _leave(" [no call]"); return; -- cgit v0.10.2