From: Amaury Denoyelle <adenoyelle@haproxy.com>
Date: Thu, 20 Nov 2025 15:32:15 +0000 (+0100)
Subject: BUG/MINOR: quic: flag conn with CO_FL_FDLESS on backend side
X-Git-Tag: v3.3-dev14~14
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b2664d44506671f76efd49877aac961c443e6e9d;p=thirdparty%2Fhaproxy.git

BUG/MINOR: quic: flag conn with CO_FL_FDLESS on backend side

Connection struct defines an handle which can point to either a FD or a
quic_conn. On the latter case, CO_FL_FDLESS must be set. This is already
the case on frontend side.

This patch fixes QUIC backend support. Before setting connection handle
member to a quic_conn instance, ensure that CO_FL_FDLESS flag is set on
the connection.

Prior to this patch, crash can occur in "show sess all".

No need to backport.
---

diff --git a/src/xprt_quic.c b/src/xprt_quic.c
index b177c6656..e16274771 100644
--- a/src/xprt_quic.c
+++ b/src/xprt_quic.c
@@ -169,7 +169,7 @@ static int qc_conn_init(struct connection *conn, void **xprt_ctx)
 
 		quic_cid_register_seq_num(conn_id, qc);
 
-		conn->flags |= CO_FL_SSL_WAIT_HS | CO_FL_WAIT_L6_CONN;
+		conn->flags |= CO_FL_SSL_WAIT_HS | CO_FL_WAIT_L6_CONN | CO_FL_FDLESS;
 		conn->handle.qc = qc;
 		qc->conn = conn;
 	}