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treewide: Make all debug_obj_descriptors const

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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
This commit is contained in:
Stephen Boyd
2020-08-14 17:40:27 -07:00
committed by Thomas Gleixner
parent aedcade6f4
commit f9e62f318f
8 changed files with 12 additions and 12 deletions
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4
kernel/time/hrtimer.c
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@@ -342,7 +342,7 @@ EXPORT_SYMBOL_GPL(ktime_add_safe);
#ifdef CONFIG_DEBUG_OBJECTS_TIMERS
static struct debug_obj_descr hrtimer_debug_descr;
static const struct debug_obj_descr hrtimer_debug_descr;
static void *hrtimer_debug_hint(void *addr)
{
@@ -401,7 +401,7 @@ static bool hrtimer_fixup_free(void *addr, enum debug_obj_state state)
}
}
static struct debug_obj_descr hrtimer_debug_descr = {
static const struct debug_obj_descr hrtimer_debug_descr = {
.name = "hrtimer",
.debug_hint = hrtimer_debug_hint,
.fixup_init = hrtimer_fixup_init,