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| 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 /lib/percpu_counter.c | |
| parent | aedcade6f4fa9a1e65f327fc42de3fb47660646c (diff) | |
| download | lwn-f9e62f318fd706a54b7ce9b28e5c7e49bbde8788.tar.gz lwn-f9e62f318fd706a54b7ce9b28e5c7e49bbde8788.zip | |
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 'lib/percpu_counter.c')
| -rw-r--r-- | lib/percpu_counter.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/percpu_counter.c b/lib/percpu_counter.c index a2345de90e93..f61689a96e85 100644 --- a/lib/percpu_counter.c +++ b/lib/percpu_counter.c @@ -17,7 +17,7 @@ static DEFINE_SPINLOCK(percpu_counters_lock); #ifdef CONFIG_DEBUG_OBJECTS_PERCPU_COUNTER -static struct debug_obj_descr percpu_counter_debug_descr; +static const struct debug_obj_descr percpu_counter_debug_descr; static bool percpu_counter_fixup_free(void *addr, enum debug_obj_state state) { @@ -33,7 +33,7 @@ static bool percpu_counter_fixup_free(void *addr, enum debug_obj_state state) } } -static struct debug_obj_descr percpu_counter_debug_descr = { +static const struct debug_obj_descr percpu_counter_debug_descr = { .name = "percpu_counter", .fixup_free = percpu_counter_fixup_free, }; |