From: Christopher Faulet <cfaulet@haproxy.com>
Date: Wed, 18 Sep 2019 09:07:20 +0000 (+0200)
Subject: BUG/MINOR: mux-h2: Be sure to have a connection to unsubcribe
X-Git-Tag: v2.1-dev2~60
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=21d849f52fc64c51e5abf5a8bd69f2aeff8b3125;p=thirdparty%2Fhaproxy.git

BUG/MINOR: mux-h2: Be sure to have a connection to unsubcribe

When the mux is released, It must own the connection to unsubcribe.
This patch must be backported to 2.0.
---

diff --git a/src/mux_h2.c b/src/mux_h2.c
index fababa1903..00c8968f9e 100644
--- a/src/mux_h2.c
+++ b/src/mux_h2.c
@@ -923,9 +923,9 @@ static void h2_release(struct h2c *h2c)
 		}
 		if (h2c->wait_event.tasklet)
 			tasklet_free(h2c->wait_event.tasklet);
-		if (h2c->wait_event.events != 0)
+		if (conn && h2c->wait_event.events != 0)
 			conn->xprt->unsubscribe(conn, conn->xprt_ctx, h2c->wait_event.events,
-			    &h2c->wait_event);
+						&h2c->wait_event);
 
 		pool_free(pool_head_h2c, h2c);
 	}