From adcf95b8b5801c15ee84d69e86a7f465adad2d98 Mon Sep 17 00:00:00 2001
From: "Enrico Weigelt, metux IT consult" <info@metux.net>
Date: Wed, 16 Apr 2025 18:15:40 +0200
Subject: [PATCH] (!1916) Xv: fix segfault on shutdown

Protect against adaptor having NULL port list in XvStopAdaptors()

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
---
 Xext/xvmain.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Xext/xvmain.c b/Xext/xvmain.c
index 818452998..88bf98ff3 100644
--- a/Xext/xvmain.c
+++ b/Xext/xvmain.c
@@ -351,7 +351,7 @@ XvStopAdaptors(DrawablePtr pDrawable)
         XvPortPtr pp = pa->pPorts;
         int np = pa->nPorts;
 
-        while (np--) {
+        while ((np--) && (pp)) {
             if (pp->pDraw == pDrawable) {
                 XvdiSendVideoNotify(pp, pDrawable, XvPreempted);