diff options
| author | Stephen Boyd <swboyd@chromium.org> | 2020-08-14 17:40:27 -0700 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2020-09-24 21:56:25 +0200 |
| commit | f9e62f318fd706a54b7ce9b28e5c7e49bbde8788 (patch) | |
| tree | 6c94a6e2e3fae032ac087c0a5857fe3c81cc295d /kernel/time | |
| parent | aedcade6f4fa9a1e65f327fc42de3fb47660646c (diff) | |
| download | linux-f9e62f318fd706a54b7ce9b28e5c7e49bbde8788.tar.bz2 | |
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
Diffstat (limited to 'kernel/time')
| -rw-r--r-- | kernel/time/hrtimer.c | 4 | ||||
| -rw-r--r-- | kernel/time/timer.c | 4 |
2 files changed, 4 insertions, 4 deletions
diff --git a/kernel/time/hrtimer.c b/kernel/time/hrtimer.c index 95b6a708b040..3624b9b5835d 100644 --- a/kernel/time/hrtimer.c +++ b/kernel/time/hrtimer.c @@ -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, diff --git a/kernel/time/timer.c b/kernel/time/timer.c index a50364df1054..8b17cf28e54b 100644 --- a/kernel/time/timer.c +++ b/kernel/time/timer.c @@ -611,7 +611,7 @@ static void internal_add_timer(struct timer_base *base, struct timer_list *timer #ifdef CONFIG_DEBUG_OBJECTS_TIMERS -static struct debug_obj_descr timer_debug_descr; +static const struct debug_obj_descr timer_debug_descr; static void *timer_debug_hint(void *addr) { @@ -707,7 +707,7 @@ static bool timer_fixup_assert_init(void *addr, enum debug_obj_state state) } } -static struct debug_obj_descr timer_debug_descr = { +static const struct debug_obj_descr timer_debug_descr = { .name = "timer_list", .debug_hint = timer_debug_hint, .is_static_object = timer_is_static_object, |