From 2c8ad1a0086bcbcce7fdc89adfa95db615f8b1a2 Mon Sep 17 00:00:00 2001
From: "Enrico Weigelt, metux IT consult" <info@metux.net>
Date: Mon, 13 Oct 2025 13:37:22 +0200
Subject: [PATCH] Xext: shm: fix missing ScreenClose hook registration

ShmScreenClose() needs to be registered as ScreenClose hook into
all screens - otherwise it won't be called and so we're missing
cleanup work.

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

diff --git a/Xext/shm.c b/Xext/shm.c
index 0fcae5fa8d..106a6ec5ff 100644
--- a/Xext/shm.c
+++ b/Xext/shm.c
@@ -203,6 +203,7 @@ ShmScreenClose(CallbackListPtr *pcbl, ScreenPtr pScreen, void *unused)
 
     dixSetPrivate(&pScreen->devPrivates, shmScrPrivateKey, NULL);
     free(screen_priv);
+    dixScreenUnhookClose(pScreen, ShmScreenClose);
 }
 
 static ShmScrPrivateRec *
@@ -1401,6 +1402,7 @@ ShmExtensionInit(void)
                 screen_priv->shmFuncs = &miFuncs;
             if (!screen_priv->shmFuncs->CreatePixmap)
                 sharedPixmaps = xFalse;
+            dixScreenHookClose(walkScreen, ShmScreenClose);
         });
         if (sharedPixmaps)
             DIX_FOR_EACH_SCREEN({