From: Marc-André Lureau <marcandre.lur...@redhat.com> The commit 7cc712e98 ("ui: dispatch GL events to all listener") mechanically replaced the dpy_gl calls with a dispatch loop, using the same pre-conditions. However, it didn't take into account that all listeners do not have to implement the GL callbacks.
Add the missing pre-conditions before calling the callbacks. Fix crash when running a GL-enabled VM with "-device virtio-gpu-gl-pci -display egl-headless -vnc :0". Fixes: 7cc712e98 ("ui: dispatch GL events to all listener") Reported-by: Akihiko Odaki <akihiko.od...@gmail.com> Signed-off-by: Marc-André Lureau <marcandre.lur...@redhat.com> --- ui/console.c | 22 +++++++++++++++------- 1 file changed, 15 insertions(+), 7 deletions(-) diff --git a/ui/console.c b/ui/console.c index 40eebb6d2cc2..79a01afd1ea7 100644 --- a/ui/console.c +++ b/ui/console.c @@ -1860,7 +1860,9 @@ void dpy_gl_scanout_disable(QemuConsole *con) con->scanout.kind = SCANOUT_NONE; } QLIST_FOREACH(dcl, &s->listeners, next) { - dcl->ops->dpy_gl_scanout_disable(dcl); + if (dcl->ops->dpy_gl_scanout_disable) { + dcl->ops->dpy_gl_scanout_disable(dcl); + } } } @@ -1881,10 +1883,12 @@ void dpy_gl_scanout_texture(QemuConsole *con, x, y, width, height }; QLIST_FOREACH(dcl, &s->listeners, next) { - dcl->ops->dpy_gl_scanout_texture(dcl, backing_id, - backing_y_0_top, - backing_width, backing_height, - x, y, width, height); + if (dcl->ops->dpy_gl_scanout_texture) { + dcl->ops->dpy_gl_scanout_texture(dcl, backing_id, + backing_y_0_top, + backing_width, backing_height, + x, y, width, height); + } } } @@ -1897,7 +1901,9 @@ void dpy_gl_scanout_dmabuf(QemuConsole *con, con->scanout.kind = SCANOUT_DMABUF; con->scanout.dmabuf = dmabuf; QLIST_FOREACH(dcl, &s->listeners, next) { - dcl->ops->dpy_gl_scanout_dmabuf(dcl, dmabuf); + if (dcl->ops->dpy_gl_scanout_dmabuf) { + dcl->ops->dpy_gl_scanout_dmabuf(dcl, dmabuf); + } } } @@ -1951,7 +1957,9 @@ void dpy_gl_update(QemuConsole *con, graphic_hw_gl_block(con, true); QLIST_FOREACH(dcl, &s->listeners, next) { - dcl->ops->dpy_gl_update(dcl, x, y, w, h); + if (dcl->ops->dpy_gl_update) { + dcl->ops->dpy_gl_update(dcl, x, y, w, h); + } } graphic_hw_gl_block(con, false); } -- 2.34.1.428.gdcc0cd074f0c