diff --git a/poky/meta/recipes-core/glib-2.0/glib-2.0/0003-tests-Fix-non-atomic-access-to-a-shared-variable.patch b/poky/meta/recipes-core/glib-2.0/glib-2.0/0003-tests-Fix-non-atomic-access-to-a-shared-variable.patch
new file mode 100644
index 0000000..8bc71a6
--- /dev/null
+++ b/poky/meta/recipes-core/glib-2.0/glib-2.0/0003-tests-Fix-non-atomic-access-to-a-shared-variable.patch
@@ -0,0 +1,90 @@
+From ea746c79faf554d980c21b0e4381753e003d2dc6 Mon Sep 17 00:00:00 2001
+From: Philip Withnall <pwithnall@endlessos.org>
+Date: Wed, 11 Nov 2020 18:17:23 +0000
+Subject: [PATCH 03/29] tests: Fix non-atomic access to a shared variable
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+And drop the `volatile` qualifier from the variable, as that doesn’t
+help with thread safety.
+
+Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
+
+Helps: #600
+Upstream-Status: Backport [https://gitlab.gnome.org/GNOME/glib/-/merge_requests/1719]
+---
+ glib/tests/mainloop.c | 20 ++++++++++----------
+ 1 file changed, 10 insertions(+), 10 deletions(-)
+
+diff --git a/glib/tests/mainloop.c b/glib/tests/mainloop.c
+index 16763a0ea..563a951de 100644
+--- a/glib/tests/mainloop.c
++++ b/glib/tests/mainloop.c
+@@ -918,7 +918,7 @@ test_mainloop_overflow (void)
+   g_main_context_unref (ctx);
+ }
+ 
+-static volatile gint ready_time_dispatched;
++static gint ready_time_dispatched;  /* (atomic) */
+ 
+ static gboolean
+ ready_time_dispatch (GSource     *source,
+@@ -964,7 +964,7 @@ test_ready_time (void)
+   /* A source with no ready time set should not fire */
+   g_assert_cmpint (g_source_get_ready_time (source), ==, -1);
+   while (g_main_context_iteration (NULL, FALSE));
+-  g_assert_false (ready_time_dispatched);
++  g_assert_false (g_atomic_int_get (&ready_time_dispatched));
+ 
+   /* The ready time should not have been changed */
+   g_assert_cmpint (g_source_get_ready_time (source), ==, -1);
+@@ -978,37 +978,37 @@ test_ready_time (void)
+    */
+   g_source_set_ready_time (source, g_get_monotonic_time () + G_TIME_SPAN_DAY);
+   while (g_main_context_iteration (NULL, FALSE));
+-  g_assert_false (ready_time_dispatched);
++  g_assert_false (g_atomic_int_get (&ready_time_dispatched));
+   /* Make sure it didn't get reset */
+   g_assert_cmpint (g_source_get_ready_time (source), !=, -1);
+ 
+   /* Ready time of -1 -> don't fire */
+   g_source_set_ready_time (source, -1);
+   while (g_main_context_iteration (NULL, FALSE));
+-  g_assert_false (ready_time_dispatched);
++  g_assert_false (g_atomic_int_get (&ready_time_dispatched));
+   /* Not reset, but should still be -1 from above */
+   g_assert_cmpint (g_source_get_ready_time (source), ==, -1);
+ 
+   /* A ready time of the current time should fire immediately */
+   g_source_set_ready_time (source, g_get_monotonic_time ());
+   while (g_main_context_iteration (NULL, FALSE));
+-  g_assert_true (ready_time_dispatched);
+-  ready_time_dispatched = FALSE;
++  g_assert_true (g_atomic_int_get (&ready_time_dispatched));
++  g_atomic_int_set (&ready_time_dispatched, FALSE);
+   /* Should have gotten reset by the handler function */
+   g_assert_cmpint (g_source_get_ready_time (source), ==, -1);
+ 
+   /* As well as one in the recent past... */
+   g_source_set_ready_time (source, g_get_monotonic_time () - G_TIME_SPAN_SECOND);
+   while (g_main_context_iteration (NULL, FALSE));
+-  g_assert_true (ready_time_dispatched);
+-  ready_time_dispatched = FALSE;
++  g_assert_true (g_atomic_int_get (&ready_time_dispatched));
++  g_atomic_int_set (&ready_time_dispatched, FALSE);
+   g_assert_cmpint (g_source_get_ready_time (source), ==, -1);
+ 
+   /* Zero is the 'official' way to get a source to fire immediately */
+   g_source_set_ready_time (source, 0);
+   while (g_main_context_iteration (NULL, FALSE));
+-  g_assert_true (ready_time_dispatched);
+-  ready_time_dispatched = FALSE;
++  g_assert_true (g_atomic_int_get (&ready_time_dispatched));
++  g_atomic_int_set (&ready_time_dispatched, FALSE);
+   g_assert_cmpint (g_source_get_ready_time (source), ==, -1);
+ 
+   /* Now do some tests of cross-thread wakeups.
+-- 
+2.30.1
+