From a3d7a1209bbb06fe9d24b274475bc9879ca73333 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Fri, 22 Sep 2023 10:28:49 -0700 Subject: net: mana: Annotate struct mana_rxq 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 mana_rxq. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: "K. Y. Srinivasan" Cc: Haiyang Zhang Cc: Wei Liu Cc: Dexuan Cui Cc: Long Li Cc: Ajay Sharma Signed-off-by: Kees Cook Reviewed-by: Gustavo A. R. Silva Link: https://lore.kernel.org/r/20230922172858.3822653-7-keescook@chromium.org Signed-off-by: Jakub Kicinski --- include/net/mana/mana.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/net/mana') diff --git a/include/net/mana/mana.h b/include/net/mana/mana.h index 9f70b4332238..38441be68592 100644 --- a/include/net/mana/mana.h +++ b/include/net/mana/mana.h @@ -338,7 +338,7 @@ struct mana_rxq { /* MUST BE THE LAST MEMBER: * Each receive buffer has an associated mana_recv_buf_oob. */ - struct mana_recv_buf_oob rx_oobs[]; + struct mana_recv_buf_oob rx_oobs[] __counted_by(num_rx_buf); }; struct mana_tx_qp { -- cgit v1.2.3