From 92327f1f6e57962b75e525eb34e11dfa03191332 Mon Sep 17 00:00:00 2001 From: Sascha Hauer Date: Fri, 13 Nov 2015 08:36:52 +0100 Subject: graphics_utils: check for valid framebuffer before creating a screen Otherwise we crash later when we try to print on that screen. Signed-off-by: Sascha Hauer --- lib/gui/graphic_utils.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'lib') diff --git a/lib/gui/graphic_utils.c b/lib/gui/graphic_utils.c index 4c1885d55b..2fe9fa358a 100644 --- a/lib/gui/graphic_utils.c +++ b/lib/gui/graphic_utils.c @@ -249,6 +249,10 @@ struct screen *fb_create_screen(struct fb_info *info) { struct screen *sc; + if (!info->xres || !info->yres || !info->line_length || + !info->screen_base) + return ERR_PTR(-EINVAL); + sc = xzalloc(sizeof(*sc)); sc->s.x = 0; -- cgit v1.2.3