On 9/22/23 11:28, 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 ppe_common_cb.
[1]
https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Cc: Yisen Zhuang <[email protected]>
Cc: Salil Mehta <[email protected]>
Cc: "David S. Miller" <[email protected]>
Cc: Eric Dumazet <[email protected]>
Cc: Jakub Kicinski <[email protected]>
Cc: Paolo Abeni <[email protected]>
Cc: [email protected]
Signed-off-by: Kees Cook <[email protected]>
Reviewed-by: Gustavo A. R. Silva <[email protected]>
Thanks
--
Gustavo
---
drivers/net/ethernet/hisilicon/hns/hns_dsaf_ppe.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_ppe.h
b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_ppe.h
index 0f0e16f9afc0..7e00231c1acf 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_ppe.h
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_ppe.h
@@ -92,7 +92,7 @@ struct ppe_common_cb {
u8 comm_index; /*ppe_common index*/
u32 ppe_num;
- struct hns_ppe_cb ppe_cb[];
+ struct hns_ppe_cb ppe_cb[] __counted_by(ppe_num);
};
