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 picard.linux.it (picard.linux.it [213.254.12.146]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 7B853C43217 for ; Fri, 25 Nov 2022 14:33:57 +0000 (UTC) Received: from picard.linux.it (localhost [IPv6:::1]) by picard.linux.it (Postfix) with ESMTP id 4A4883CDCBE for ; Fri, 25 Nov 2022 15:33:55 +0100 (CET) Received: from in-4.smtp.seeweb.it (in-4.smtp.seeweb.it [IPv6:2001:4b78:1:20::4]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-384)) (No client certificate requested) by picard.linux.it (Postfix) with ESMTPS id E24083CC8E4 for ; Fri, 25 Nov 2022 15:33:46 +0100 (CET) Received: from smtp-out2.suse.de (smtp-out2.suse.de [IPv6:2001:67c:2178:6::1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by in-4.smtp.seeweb.it (Postfix) with ESMTPS id 9634C1000F1B for ; Fri, 25 Nov 2022 15:33:44 +0100 (CET) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id 81BF81FD68; Fri, 25 Nov 2022 14:33:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_rsa; t=1669386824; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=cob/RWSfRqBKMcXny9P+gASgeTbVcb0UKRaaV7TrSuA=; b=vysxQ/Rc2voennmfyWzyw9+kxfk3bzK8CcHF/v7iSjR973iQSDNMyfj9M4bNry6A+L2Uqm KBXOkiE2rr1ktVmbQGlKeygdMtVt2LXWnMqvyQi7ZJvaD75jUABszEIngXSw28twCPe5fS LSc3vEtn+Zr81a0vPVwyZXkarBZTJjk= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_ed25519; t=1669386824; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=cob/RWSfRqBKMcXny9P+gASgeTbVcb0UKRaaV7TrSuA=; b=nB7AOM3hWTNigKKWBgW0mfCsu5THvGaFeULQUXoxJJ5AagX3qQ4hF500Dk+mwo35QzYtJE NaVoeCJdNTt5uKDg== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 6B5F41361C; Fri, 25 Nov 2022 14:33:44 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id bvVoGUjSgGPqbQAAMHmgww (envelope-from ); Fri, 25 Nov 2022 14:33:44 +0000 Date: Fri, 25 Nov 2022 15:35:06 +0100 From: Cyril Hrubis To: Martin Doucha Message-ID: References: <20221123103547.54246-1-david@redhat.com> <8587b908-a035-a96a-7233-2863b7bc30ca@suse.cz> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-Virus-Scanned: clamav-milter 0.102.4 at in-4.smtp.seeweb.it X-Virus-Status: Clean Subject: Re: [LTP] [PATCH v2] security/dirtyc0w_shmem: Add new test for CVE-2022-2590 X-BeenThere: ltp@lists.linux.it X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux Test Project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: ltp@lists.linux.it, David Hildenbrand Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ltp-bounces+ltp=archiver.kernel.org@lists.linux.it Sender: "ltp" Hi! > I think the point is that there's no guarantee that NULL will actually > be defined as (void*)0. It can be defined as a plain integer instead. > And it *IS* defined as plain integer when the header is #included in C++. NULL is required to be 0 cast to void* in POSIX. https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/stddef.h.html So at least on POSIX-like systems in C NULL must be ((void*)0) -- Cyril Hrubis chrubis@suse.cz -- Mailing list info: https://lists.linux.it/listinfo/ltp