treewide: Make all debug_obj_descriptors const
This should make it harder for the kernel to corrupt the debug object
descriptor, used to call functions to fixup state and track debug objects,
by moving the structure to read-only memory.
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20200815004027.2046113-3-swboyd@chromium.org
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index c41c3c1..ac088ce 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -427,7 +427,7 @@
#ifdef CONFIG_DEBUG_OBJECTS_WORK
-static struct debug_obj_descr work_debug_descr;
+static const struct debug_obj_descr work_debug_descr;
static void *work_debug_hint(void *addr)
{
@@ -477,7 +477,7 @@
}
}
-static struct debug_obj_descr work_debug_descr = {
+static const struct debug_obj_descr work_debug_descr = {
.name = "work_struct",
.debug_hint = work_debug_hint,
.is_static_object = work_is_static_object,