gnome-keyring/gnome-keyring-2.21.5-race-condition.patch

50 lines
1.5 KiB
Diff

diff -up gnome-keyring-2.21.5/common/gkr-async.c.race-condition gnome-keyring-2.21.5/common/gkr-async.c
--- gnome-keyring-2.21.5/common/gkr-async.c.race-condition 2008-01-11 10:48:00.000000000 -0500
+++ gnome-keyring-2.21.5/common/gkr-async.c 2008-01-21 15:09:51.000000000 -0500
@@ -34,6 +34,10 @@
#define DEBUG_LOCKS 0
+/*
+ * See comments on async_poll_func() on the order of the various
+ * gets and sets of waiting_on_* flags.
+ */
#if DEBUG_LOCKS
#define DO_LOCK(mtx) G_STMT_START { \
g_printerr ("%s LOCK %s\n", __func__, G_STRINGIFY(mtx)); \
@@ -93,8 +97,18 @@ async_poll_func (GPollFD *ufds, guint nf
gint ret;
g_assert (orig_poll_func);
+
+ /*
+ * These two atomic variables are interlocked in the
+ * opposite order from those in DO_LOCK which prevents
+ * race conditions in the if statements.
+ */
g_atomic_int_set (&waiting_on_poll, 1);
+ if (g_atomic_int_get (&waiting_on_lock))
+ timeout = 0;
+
ret = (orig_poll_func) (ufds, nfsd, timeout);
+
g_atomic_int_set (&waiting_on_poll, 0);
if (done_queue && !g_queue_is_empty (done_queue))
@@ -314,7 +328,6 @@ cleanup_done_thread (gpointer message, g
running_workers = NULL;
g_assert (main_loop);
- gkr_wakeup_register (g_main_loop_get_context (main_loop));
return FALSE;
}
@@ -346,7 +359,6 @@ gkr_async_worker_start (GThreadFunc func
if (!done_queue) {
g_assert (main_loop);
- gkr_wakeup_register (g_main_loop_get_context (main_loop));
done_queue = g_queue_new ();
g_assert (!running_workers);