[PULL 01/33] ui: return NULL when getting cursor without a console

marcandre.lureau@redhat.com posted 33 patches 2 years, 7 months ago
Maintainers: "Marc-André Lureau" <marcandre.lureau@redhat.com>, Gerd Hoffmann <kraxel@redhat.com>, Paolo Bonzini <pbonzini@redhat.com>, "Michael S. Tsirkin" <mst@redhat.com>, Stefan Weil <sw@weilnetz.de>, "Daniel P. Berrangé" <berrange@redhat.com>, Thomas Huth <thuth@redhat.com>, "Philippe Mathieu-Daudé" <philmd@linaro.org>, Eric Blake <eblake@redhat.com>, Markus Armbruster <armbru@redhat.com>, John Snow <jsnow@redhat.com>, Cleber Rosa <crosa@redhat.com>, Laurent Vivier <lvivier@redhat.com>
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[PULL 01/33] ui: return NULL when getting cursor without a console
Posted by marcandre.lureau@redhat.com 2 years, 7 months ago
From: Marc-André Lureau <marcandre.lureau@redhat.com>

VNC may try to get the current cursor even when there are no consoles
and crashes. Simple reproducer is qemu with -nodefaults.

Fixes: (again)
https://gitlab.com/qemu-project/qemu/-/issues/1548

Fixes: commit 385ac97f8 ("ui: keep current cursor with QemuConsole")
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230428154807.2143652-1-marcandre.lureau@redhat.com>
---
 ui/console.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ui/console.c b/ui/console.c
index e173731e20..7461446e71 100644
--- a/ui/console.c
+++ b/ui/console.c
@@ -2306,7 +2306,7 @@ QEMUCursor *qemu_console_get_cursor(QemuConsole *con)
     if (con == NULL) {
         con = active_console;
     }
-    return con->cursor;
+    return con ? con->cursor : NULL;
 }
 
 bool qemu_console_is_visible(QemuConsole *con)
-- 
2.41.0