1 files changed, 44 insertions, 0 deletions
diff --git a/kde-plasma/kwayland-server/files/kwayland-server-5.24.4-guard-subsurface-parent-access.patch b/kde-plasma/kwayland-server/files/kwayland-server-5.24.4-guard-subsurface-parent-access.patch
new file mode 100644
index 000000000000..e40189ab2744
--- /dev/null
+++ b/kde-plasma/kwayland-server/files/kwayland-server-5.24.4-guard-subsurface-parent-access.patch
@@ -0,0 +1,44 @@
+From 6dcf73adaafeaa40c05e22df5f1c10af88df362b Mon Sep 17 00:00:00 2001
+From: David Edmundson <kde@davidedmundson.co.uk>
+Date: Wed, 30 Mar 2022 14:57:12 +0100
+Subject: [PATCH] Guard subsurface parent access.
+
+Whilst a subsurface must have a parent at the time of creation, the
+lifespan is not guaranteed afterwards.
+
+It's a weird thing for a client to do, but we need to not crash
+afterwards.
+
+If the parent surface is destroyed we should consider the surface
+unmapped.
+
+BUG: 452044
+
+
+(cherry picked from commit 1d2424a56a13dc55aeab699a38234a7cafa091d8)
+---
+ src/server/surface_interface.cpp | 8 +++++++-
+ 1 file changed, 7 insertions(+), 1 deletion(-)
+
+diff --git a/src/server/surface_interface.cpp b/src/server/surface_interface.cpp
+index ef2584f4..8bfac95f 100644
+--- a/src/server/surface_interface.cpp
++++ b/src/server/surface_interface.cpp
+@@ -678,7 +678,13 @@ void SurfaceInterfacePrivate::commitFromCache()
+ 
+ bool SurfaceInterfacePrivate::computeEffectiveMapped() const
+ {
+-    return bufferRef && (!subSurface || subSurface->parentSurface()->isMapped());
++    if (!bufferRef) {
++        return false;
++    }
++    if (subSurface) {
++        return subSurface->parentSurface() && subSurface->parentSurface()->isMapped();
++    }
++    return true;
+ }
+ 
+ void SurfaceInterfacePrivate::updateEffectiveMapped()
+-- 
+GitLab
+