From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi1-f175.google.com (mail-oi1-f175.google.com [209.85.167.175]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9A61A9CA70 for ; Sat, 30 Sep 2023 16:36:16 +0000 (UTC) Received: by mail-oi1-f175.google.com with SMTP id 5614622812f47-3af608eb34bso2578361b6e.1 for ; Sat, 30 Sep 2023 09:36:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1696091775; x=1696696575; darn=lists.linux.dev; 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=iyt0KGC1OcelyqP8s+Yq2xN5/wo1kjcQggShUtRbwZo=; b=TVjqsEIo5k2uCe5Lw9NECcmCMaveiN/BUdVJpF+g9r+7VJ1C/+sePyRD2ETjHOEERC XHVNQOeQqgp8h8jNAH8gWOD8Uc9gVjThOE0Qm6syA1Hiss6saIaYzT+aCyVjIMb9p2n4 p363xa+lVh+LeLcn9teLNgVNV2dJupzHedINTwaJ24H6N2y+1LcOkfv1Zk5pkUh/kJPd r08Ye0EATUrVCjcaW5BjeYuP7DZABtLZWefEb/e58XE/8BuLiAs7K9fGxrbVoeRoQzo1 yqpu7WHc0s6IPLB9OpOUEyjr9mIPoqYYtVMjh5lIqihi4OItIgf5vUkAT6QuOAIatkPg 6JOQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1696091775; x=1696696575; 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=iyt0KGC1OcelyqP8s+Yq2xN5/wo1kjcQggShUtRbwZo=; b=ggGZuV7GAmp7wDE5QayyGFIihAWTiQ9ZusjSQyltfVvrDRBzmZ9uudwojoeAWeMl8u TG1DhnsIPAmsm5ElmjKS4sUvW35d1LS/ATMs9fq7yeoZydJ6uaL2/V8EpI2+H/8aHgOA AF/RJJdgQBTL7JLetDR/WveKekEliNnGVapcrErGK9wNX+0jVrVrGweZothUPwT0xd++ zq01vQgXbpWc5daT9qZu8995RNb+jLLeqJKSzqQlBhFNR4cSnRw6nLoAGiITChgxoB8N edBG5Wl6J4VfwTtCAKb4p0wz34+XNek5fGqQ+tOyCvQXIwpDxZt+YLHiAcb/VZSI5rDj bw7g== X-Gm-Message-State: AOJu0YxkStCVlH9MLGLS0fV29otgCtvv8e+ds7J1FZgn+yeY6OOcGs0J yqaNxRL9VgHVzILVvVNVwkQ= X-Google-Smtp-Source: AGHT+IGrp36U8oVS9oihnUJtqY2rD9L79m36iKwc0SNUFVgHabnFPmI2BXNhQulf77W7U4MEhKzTUA== X-Received: by 2002:a05:6808:f01:b0:3a9:cfb5:4637 with SMTP id m1-20020a0568080f0100b003a9cfb54637mr8914851oiw.38.1696091775406; Sat, 30 Sep 2023 09:36:15 -0700 (PDT) Received: from google.com ([2620:15c:9d:2:a90f:2dad:30c1:d923]) by smtp.gmail.com with ESMTPSA id f18-20020a637552000000b005777a50c14csm16343594pgn.0.2023.09.30.09.36.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 30 Sep 2023 09:36:15 -0700 (PDT) Date: Sat, 30 Sep 2023 09:36:12 -0700 From: Dmitry Torokhov To: Kees Cook Cc: linux-input@vger.kernel.org, Nathan Chancellor , Nick Desaulniers , Tom Rix , linux-kernel@vger.kernel.org, llvm@lists.linux.dev, linux-hardening@vger.kernel.org Subject: Re: [PATCH] input: Annotate struct evdev_client with __counted_by Message-ID: References: <20230922175027.work.563-kees@kernel.org> Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230922175027.work.563-kees@kernel.org> On Fri, Sep 22, 2023 at 10:50:28AM -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 evdev_client. > > [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci > > Cc: Dmitry Torokhov > Cc: linux-input@vger.kernel.org > Signed-off-by: Kees Cook Applied, thank you. -- Dmitry