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BUG/MEDIUM: servers: Only destroy a conn_stream we just allocated.

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In connect_server(), if we failed to add the connection to the session,
only destroy the conn_stream if we just allocated it, otherwise it may
have been allocated outside connect_server(), along with a connection which
has its destination address set.
Also use si_release_endpoint() instead of cs_destroy(), to make sure the
stream_interface doesn't reference it anymore.

This should be backported to 1.9.
This commit is contained in:
Olivier Houchard 2019-01-29 15:50:38 +01:00 committed by Willy Tarreau
parent f67be93ae0
commit 4dc85538ba
1 changed files with 6 additions and 3 deletions
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9
src/backend.c
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@ -1148,6 +1148,7 @@ int connect_server(struct stream *s)
int reuse = 0;
int reuse_orphan = 0;
int init_mux = 0;
int alloced_cs = 0;
int err;
@ -1325,9 +1326,10 @@ int connect_server(struct stream *s)
if (avail >= 1) {
srv_cs = srv_conn->mux->attach(srv_conn, s->sess);
if (srv_cs)
if (srv_cs) {
alloced_cs = 1;
si_attach_cs(&s->si[1], srv_cs);
else
} else
srv_conn = NULL;
}
else
@ -1351,7 +1353,8 @@ int connect_server(struct stream *s)
if (!session_add_conn(s->sess, srv_conn, s->target)) {
/* If we failed to attach the connection, detach the
* conn_stream, possibly destroying the connection */
cs_destroy(srv_cs);
if (alloced_cs)
si_release_endpoint(&s->si[1]);
srv_conn->owner = NULL;
if (!srv_add_to_idle_list(objt_server(srv_conn->target), srv_conn))
/* The server doesn't want it, let's kill the connection right away */