From 7c6b969383a403474a63715fd7a12caddd826611 Mon Sep 17 00:00:00 2001 From: Ulf Hermann Date: Mon, 15 Apr 2019 15:50:15 +0200 Subject: eglfs: Call destroy() from dtors of concrete windows Calling destroy from the QEglFSWindow dtor() triggers the virtual invalidateSurface() to be called on a partly destroyed object. As the child windows deregister themselves from their screens on invalidateSurface() this is dangerous: It leaves a dangling pointer in the screen. Fixes: QTBUG-75075 Change-Id: Idd3fea18562d41973f364340df875a50dbd5691e Reviewed-by: Laszlo Agocs --- src/plugins/platforms/eglfs/api/qeglfswindow.cpp | 3 +++ .../platforms/eglfs/deviceintegration/eglfs_kms/qeglfskmsgbmwindow.h | 3 +++ .../eglfs_kms_egldevice/qeglfskmsegldeviceintegration.cpp | 2 ++ .../deviceintegration/eglfs_kms_vsp2/qeglfskmsvsp2integration.cpp | 3 +++ 4 files changed, 11 insertions(+) (limited to 'src/plugins/platforms/eglfs') diff --git a/src/plugins/platforms/eglfs/api/qeglfswindow.cpp b/src/plugins/platforms/eglfs/api/qeglfswindow.cpp index 98e9ee4728..c1d5af47aa 100644 --- a/src/plugins/platforms/eglfs/api/qeglfswindow.cpp +++ b/src/plugins/platforms/eglfs/api/qeglfswindow.cpp @@ -167,6 +167,9 @@ void QEglFSWindow::create() void QEglFSWindow::destroy() { + if (!m_flags.testFlag(Created)) + return; // already destroyed + #ifndef QT_NO_OPENGL QOpenGLCompositor::instance()->removeWindow(this); #endif diff --git a/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms/qeglfskmsgbmwindow.h b/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms/qeglfskmsgbmwindow.h index a19cf7e8bc..ee4b7978f1 100644 --- a/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms/qeglfskmsgbmwindow.h +++ b/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms/qeglfskmsgbmwindow.h @@ -55,6 +55,9 @@ public: : QEglFSWindow(w), m_integration(integration) { } + + ~QEglFSKmsGbmWindow() { destroy(); } + void resetSurface() override; void invalidateSurface() override; diff --git a/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms_egldevice/qeglfskmsegldeviceintegration.cpp b/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms_egldevice/qeglfskmsegldeviceintegration.cpp index ecdfb352ab..3e78196227 100644 --- a/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms_egldevice/qeglfskmsegldeviceintegration.cpp +++ b/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms_egldevice/qeglfskmsegldeviceintegration.cpp @@ -116,6 +116,8 @@ public: , m_egl_stream(EGL_NO_STREAM_KHR) { } + ~QEglFSKmsEglDeviceWindow() { destroy(); } + void invalidateSurface() override; void resetSurface() override; diff --git a/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms_vsp2/qeglfskmsvsp2integration.cpp b/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms_vsp2/qeglfskmsvsp2integration.cpp index 0d9b6b6290..d1250ec9bf 100644 --- a/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms_vsp2/qeglfskmsvsp2integration.cpp +++ b/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms_vsp2/qeglfskmsvsp2integration.cpp @@ -205,6 +205,9 @@ public: : QEglFSWindow(w) , m_integration(integration) {} + + ~QEglFSKmsVsp2Window() { destroy(); } + void resetSurface() override; void invalidateSurface() override; const QEglFSKmsVsp2Integration *m_integration; -- cgit v1.2.3