From 3f856f29551f0cbb8573eadd4d278765a3b95d40 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Fri, 15 Sep 2023 13:06:36 -0700 Subject: [PATCH] wifi: ath10k: Annotate struct ath10k_ce_ring 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 ath10k_ce_ring. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: Kalle Valo Cc: Jeff Johnson Cc: ath10k@lists.infradead.org Cc: linux-wireless@vger.kernel.org Signed-off-by: Kees Cook Acked-by: Jeff Johnson Reviewed-by: Gustavo A. R. Silva Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/20230915200636.never.762-kees@kernel.org --- drivers/net/wireless/ath/ath10k/ce.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath/ath10k/ce.h b/drivers/net/wireless/ath/ath10k/ce.h index 666ce384a1d8b..27367bd64e957 100644 --- a/drivers/net/wireless/ath/ath10k/ce.h +++ b/drivers/net/wireless/ath/ath10k/ce.h @@ -110,7 +110,7 @@ struct ath10k_ce_ring { struct ce_desc_64 *shadow_base; /* keep last */ - void *per_transfer_context[]; + void *per_transfer_context[] __counted_by(nentries); }; struct ath10k_ce_pipe { -- 2.30.2