From 2953fa030690bdca0b14ab641c8e8c1df002aa51 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Fri, 22 Sep 2023 10:53:48 -0700 Subject: hpet: Annotate struct hpets with __counted_by Prepare for the coming implementation by GCC and Clang of the __counted_by attribute. Flexible array members annotated with __counted_by can have their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS (for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family functions). As found with Coccinelle[1], add __counted_by for struct hpets. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: Clemens Ladisch Cc: Arnd Bergmann Cc: Greg Kroah-Hartman Signed-off-by: Kees Cook Reviewed-by: "Gustavo A. R. Silva" Link: https://lore.kernel.org/r/20230922175348.work.056-kees@kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/char/hpet.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/char') diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c index ee71376f174b..0176a76cf0fe 100644 --- a/drivers/char/hpet.c +++ b/drivers/char/hpet.c @@ -111,7 +111,7 @@ struct hpets { unsigned long hp_delta; unsigned int hp_ntimer; unsigned int hp_which; - struct hpet_dev hp_dev[]; + struct hpet_dev hp_dev[] __counted_by(hp_ntimer); }; static struct hpets *hpets; -- cgit v1.2.3