From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 16D4AE94114 for ; Fri, 6 Oct 2023 20:40:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233530AbjJFUkP (ORCPT ); Fri, 6 Oct 2023 16:40:15 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56008 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233536AbjJFUkM (ORCPT ); Fri, 6 Oct 2023 16:40:12 -0400 Received: from mail-pl1-x62e.google.com (mail-pl1-x62e.google.com [IPv6:2607:f8b0:4864:20::62e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4FC47D6 for ; Fri, 6 Oct 2023 13:40:11 -0700 (PDT) Received: by mail-pl1-x62e.google.com with SMTP id d9443c01a7336-1c723f1c80fso19774585ad.1 for ; Fri, 06 Oct 2023 13:40:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1696624811; x=1697229611; darn=vger.kernel.org; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=gYltLeYvbo/1mtF+cJGeNFCBhuyzY8y0TMwn8mJuDlU=; b=aVVs8RPrQTqCTjnXOY9nAwr2OCb8YXiOco08CShS92ljT8lrczAb7/Bvecss2ocb4E b4mlzDnaTPBAj8FMY2bLfu962Yhs8wEoHZNKD6oj9FHN0UTlp7PBO8e/21TlSI5sXeTC suJmtsaKQds6w+Z5C4JdwqH9eMc3yw9HMlNW8= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1696624811; x=1697229611; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=gYltLeYvbo/1mtF+cJGeNFCBhuyzY8y0TMwn8mJuDlU=; b=CcmDX+JBy4lP0U0cir142u7dy+SaIPHFS0fKCPantN9dHF9jlxJ1UK//ahB9fL0Dtq cwM1CHtxlKi/OwQbHwGVcxWwfXrJub5q91hqQWSQkk9hqjDlHzGxDbeFP3JNK1GeTijv 7LCz27TP54IFT4SGlk9KqeY1geeRawScFn7lYJWybPQKIClhJ24rEPXt+3T9Wf6pEoTH nXhkU2v4lX59EnYMkoCKzN8gT6J2paNvixfsAoiVazNsvMDMWh3PnZXB32585IvudVPE Rn7OjJuuGj74yZx090bUr9cCzWa9jAqlbX0nZ90xxopSe90SlWp26MM5DMlzSFZbATIT c77g== X-Gm-Message-State: AOJu0YzKvaVGQ+zmEa/6UUZEmJ/NyLLlUIXmiREV2SsbGXb9xWcQSTKR ujSnqta64ZbTEuw9wshaQetlJg== X-Google-Smtp-Source: AGHT+IGoeOCB9BQIIYsDUHmHt0dNs5E/IqnYM+4JDPUgBzU2U7hQ3/G8hmfV02fZLGW6TulWR0YmQg== X-Received: by 2002:a17:902:9b8e:b0:1c6:2780:3adc with SMTP id y14-20020a1709029b8e00b001c627803adcmr8091459plp.24.1696624810733; Fri, 06 Oct 2023 13:40:10 -0700 (PDT) Received: from www.outflux.net (198-0-35-241-static.hfc.comcastbusiness.net. [198.0.35.241]) by smtp.gmail.com with ESMTPSA id z18-20020a170902ee1200b001c55e13bf2asm4349404plb.283.2023.10.06.13.40.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 06 Oct 2023 13:40:10 -0700 (PDT) Date: Fri, 6 Oct 2023 13:40:08 -0700 From: Kees Cook To: Mark Brown Cc: Liam Girdwood , Support Opensource , Nathan Chancellor , Nick Desaulniers , Tom Rix , linux-kernel@vger.kernel.org, llvm@lists.linux.dev, linux-hardening@vger.kernel.org Subject: Re: [PATCH] regulator: da9063: Annotate struct da9063_regulators with __counted_by Message-ID: <202310061339.56F7680B5E@keescook> References: <20230922175207.work.576-kees@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230922175207.work.576-kees@kernel.org> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Sep 22, 2023 at 10:52:07AM -0700, 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 da9063_regulators. Friendly ping. Mark can you pick this up? Thanks! -Kees > > [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci > > Cc: Support Opensource > Cc: Liam Girdwood > Cc: Mark Brown > Signed-off-by: Kees Cook > --- > drivers/regulator/da9063-regulator.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/regulator/da9063-regulator.c b/drivers/regulator/da9063-regulator.c > index a0621665a6d2..82bf321ae06f 100644 > --- a/drivers/regulator/da9063-regulator.c > +++ b/drivers/regulator/da9063-regulator.c > @@ -158,7 +158,7 @@ struct da9063_regulator { > struct da9063_regulators { > unsigned int n_regulators; > /* Array size to be defined during init. Keep at end. */ > - struct da9063_regulator regulator[]; > + struct da9063_regulator regulator[] __counted_by(n_regulators); > }; > > /* BUCK modes for DA9063 */ > -- > 2.34.1 > -- Kees Cook