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From 0317fe746acc1f14bcb64d740de813f9ca8f4e70 Mon Sep 17 00:00:00 2001
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From: Ray Strode <rstrode@redhat.com>
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Date: Wed, 23 Aug 2017 09:26:11 -0400
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Subject: [PATCH] manager: fix dangling pointer free
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When reauthenticating, we can crash if no login screen
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is running on the seat (for instance, when building
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with --disable-user-display-server, and not user
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switching). The crash is due to a dangling
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pointer.
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This commit fixes that.
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https://bugzilla.gnome.org/show_bug.cgi?id=786656
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---
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daemon/gdm-manager.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/daemon/gdm-manager.c b/daemon/gdm-manager.c
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index 3eef745f..f001a36e 100644
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--- a/daemon/gdm-manager.c
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+++ b/daemon/gdm-manager.c
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@@ -2003,62 +2003,62 @@ on_user_session_died (GdmSession *session,
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static char *
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get_display_device (GdmManager *manager,
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GdmDisplay *display)
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{
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/* systemd finds the display device out on its own based on the display */
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return NULL;
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}
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static void
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on_session_reauthenticated (GdmSession *session,
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const char *service_name,
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GdmManager *manager)
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{
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gboolean fail_if_already_switched = FALSE;
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if (gdm_session_get_display_mode (session) == GDM_SESSION_DISPLAY_MODE_REUSE_VT) {
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const char *seat_id;
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char *session_id;
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seat_id = gdm_session_get_display_seat_id (session);
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if (get_login_window_session_id (seat_id, &session_id)) {
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GdmDisplay *display = gdm_display_store_find (manager->priv->display_store,
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lookup_by_session_id,
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(gpointer) session_id);
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if (display != NULL) {
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gdm_display_stop_greeter_session (display);
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gdm_display_unmanage (display);
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gdm_display_finish (display);
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}
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+ g_free (session_id);
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}
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- g_free (session_id);
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}
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/* There should already be a session running, so jump to its
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* VT. In the event we're already on the right VT, (i.e. user
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* used an unlock screen instead of a user switched login screen),
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* then silently succeed and unlock the session.
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*/
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switch_to_compatible_user_session (manager, session, fail_if_already_switched);
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}
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static void
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on_session_client_ready_for_session_to_start (GdmSession *session,
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const char *service_name,
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gboolean client_is_ready,
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GdmManager *manager)
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{
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gboolean waiting_to_start_user_session;
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if (client_is_ready) {
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g_debug ("GdmManager: Will start session when ready");
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} else {
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g_debug ("GdmManager: Will start session when ready and told");
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}
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waiting_to_start_user_session = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (session),
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"waiting-to-start"));
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g_object_set_data (G_OBJECT (session),
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"start-when-ready",
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GINT_TO_POINTER (client_is_ready));
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--
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2.14.3
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