On 9/22/23 11:53, 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 hte_device.
[1]
https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Cc: Dipen Patel <[email protected]>
Cc: [email protected]
Signed-off-by: Kees Cook <[email protected]>
Reviewed-by: Gustavo A. R. Silva <[email protected]>
Thanks
--
Gustavo
---
drivers/hte/hte.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/hte/hte.c b/drivers/hte/hte.c
index 598a716b7364..1fd8d2d4528b 100644
--- a/drivers/hte/hte.c
+++ b/drivers/hte/hte.c
@@ -88,7 +88,7 @@ struct hte_device {
struct list_head list;
struct hte_chip *chip;
struct module *owner;
- struct hte_ts_info ei[];
+ struct hte_ts_info ei[] __counted_by(nlines);
};
#ifdef CONFIG_DEBUG_FS
