On 9/15/23 14:03, Kees Cook wrote:
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 stripe_c.
[1]
https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Cc: Alasdair Kergon <a...@redhat.com>
Cc: Mike Snitzer <snit...@kernel.org>
Cc: dm-devel@redhat.com
Signed-off-by: Kees Cook <keesc...@chromium.org>
Reviewed-by: Gustavo A. R. Silva <gustavo...@kernel.org>
Thanks
--
Gustavo
---
drivers/md/dm-stripe.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/md/dm-stripe.c b/drivers/md/dm-stripe.c
index e2854a3cbd28..5e70f5ae394d 100644
--- a/drivers/md/dm-stripe.c
+++ b/drivers/md/dm-stripe.c
@@ -44,7 +44,7 @@ struct stripe_c {
/* Work struct used for triggering events*/
struct work_struct trigger_event;
- struct stripe stripe[];
+ struct stripe stripe[] __counted_by(stripes);
};
/*
