From: Marcelo Ricardo Leitner Date: Fri, 18 Mar 2016 21:39:19 +0000 (-0300) Subject: sctp: do not leak chunks that are sent to unconfirmed paths X-Git-Tag: v4.6-rc1~38^2~38 X-Git-Url: http://git.cascardo.eti.br/?p=cascardo%2Flinux.git;a=commitdiff_plain;h=31b055ef0c6116a27e9a787304ecf87a77d34764 sctp: do not leak chunks that are sent to unconfirmed paths Currently, if a chunk is scheduled to be sent through a transport that is currently unconfirmed, it will be leaked as it is dequeued from outq and is not re-queued nor freed. As I'm not aware of any situation that may lead to this situation, I'm fixing this by freeing the chunk and also logging a trace so that we can fix the other bug if it ever happens. Signed-off-by: Marcelo Ricardo Leitner Signed-off-by: David S. Miller --- diff --git a/net/sctp/outqueue.c b/net/sctp/outqueue.c index f03541d0f12d..8d3d3625130e 100644 --- a/net/sctp/outqueue.c +++ b/net/sctp/outqueue.c @@ -978,8 +978,12 @@ static int sctp_outq_flush(struct sctp_outq *q, int rtx_timeout, gfp_t gfp) (new_transport->state == SCTP_UNCONFIRMED) || (new_transport->state == SCTP_PF))) new_transport = asoc->peer.active_path; - if (new_transport->state == SCTP_UNCONFIRMED) + if (new_transport->state == SCTP_UNCONFIRMED) { + WARN_ONCE(1, "Atempt to send packet on unconfirmed path."); + sctp_chunk_fail(chunk, 0); + sctp_chunk_free(chunk); continue; + } /* Change packets if necessary. */ if (new_transport != transport) {