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[2620:137:e000::1:20]) by mx.google.com with ESMTP id f1-20020a63f741000000b00439ae52c996si1049090pgk.71.2022.11.10.19.02.16; Thu, 10 Nov 2022 19:02:30 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@foxmail.com header.s=s201512 header.b=op116er2; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=foxmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232749AbiKKCtE (ORCPT + 99 others); Thu, 10 Nov 2022 21:49:04 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38302 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232711AbiKKCsk (ORCPT ); Thu, 10 Nov 2022 21:48:40 -0500 Received: from out203-205-221-239.mail.qq.com (out203-205-221-239.mail.qq.com [203.205.221.239]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0E701E42; Thu, 10 Nov 2022 18:43:11 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foxmail.com; s=s201512; t=1668134590; bh=BL3Df7T2fda2YYRMS2L+HCFmYgkJzAzwFsLU2JM9Hkw=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=op116er2zCaFNKU2gJBwvP6wi2j3j4m/14zzKInq1OhzkFqgUn7nRYvVuKHEUIHpe 080wVBrV4wf4Y3iWecSpurBxHBJ0iNEUUuSpN5V7coMkwE/lHka7EiHODm3KtCPBdc rBg70rIolxtvtYf5A2YSYlmjVxEBjBupqsOR+x6w= Received: from localhost.localdomain ([111.199.191.46]) by newxmesmtplogicsvrsza2-0.qq.com (NewEsmtp) with SMTP id 95619E78; Fri, 11 Nov 2022 10:37:22 +0800 X-QQ-mid: xmsmtpt1668134242to097gvqf Message-ID: X-QQ-XMAILINFO: NQR8mRxMnur9pmo2KIyz9dprN6UpTtnMoo5DdTsNsP5dbyXhL/Dto/WxKS/eji yPnSz9aKaiLE8FYJd/UyyLYRg8KD7lbY5XwlDrzbMiMCFnXnziV/ouqi56ahVuJPpKDMYivtPHj7 hEdOKJu8hyeuPO0TJH1Am3Fyzi5WdqU+vL51uVMogq/cnZwMyqhoH5xeTR5a9Y1wwrCMjeyjYnAO Kn3426Ha/lty+eUNfldE4meYk8g7blNbaGMvkA3SMPfUhayvMa0meed1BZUynFsz3g0Q8S0qaKts mG3g3PZcvTbibyrAwYkUq1gwStRxoygKDFn6buaOLXjKHS0Tgp98MEHrUopCY/XDyxhrbHghf/If E0NGyuFmAVJk89c6sJUEofJ6ffZXzjXXmQ0Wp5No8CxPFpwdmDHzOchxPS0Tf1LW4JkyqjwneM23 prUgJTFe5IFekbfM61Mkez1L+e9is4orQr0EDJWQLs1FETG0T7kVCgbIAkRRpKQeEwbZGRAMICd6 cO2PfCcGo+g90Sx+bQyGvLmyRHFN4Trt65w7tC87SBtrogIaPZew20LJXFFaRpk0Laf1sG44Ycw/ xoQ3Qp/dnjOeOakhdrEOUeCtjBOvLdixMSyB02RD4naS8WW/q9mw35sY9oKeU004o4vGfGG7xfDF //txyYHrQalcHVOQF7G60c76Qou3cw6ulBmX6y3Z/ReGmJx97+ILWOzsP4oybqtA6UiNjm9bIIBk fIZsuCq7SU+2a4WMXx6LuO24Zyl17TrAQnvIabW4zGOxjYpdEbT8VrsNVCbmRkncq8wQ0W7eeIET vHUHsOl3YMe5lAiGdM4TbHRL7VG/xUwYD9NcvgLeSd2UlYB6mD/yFI66ZcMskfsDaEevjZnJBv3E W7bcBMkjoCsNezWV17gi7vqMzqoqfK5IzMGePHJdyl4994IMru+xwppnN7Y0awKFbgPUyn2o1tYf N8xrVY5VUhMHNpyNlQgrKiy7KzEkRIXrkckUDftwNGsJ3ZEkXBqLzOpIuE0CQbM+A4mAmBqHJjIM CMBHVEQw== From: Rong Tao To: sj@kernel.org Cc: damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-mm@kvack.org, rongtao@cestc.cn, rtoax@foxmail.com, shuah@kernel.org, yuanchu@google.com Subject: [PATCH] selftests/damon: Fix unnecessary compilation warnings Date: Fri, 11 Nov 2022 10:37:20 +0800 X-OQ-MSGID: <20221111023720.15408-1-rtoax@foxmail.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20221110200939.101886-1-sj@kernel.org> References: <20221110200939.101886-1-sj@kernel.org> MIME-Version: 1.0 X-Spam-Status: No, score=0.8 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM, HELO_DYNAMIC_IPADDR,RCVD_IN_DNSWL_NONE,RDNS_DYNAMIC,SPF_HELO_NONE, SPF_PASS autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1749116724319628472?= X-GMAIL-MSGID: =?utf-8?q?1749167112395467541?= From: Rong Tao When testing overflow and overread, there is no need to keep unnecessary compilation warnings, we should simply ignore them. How to reproduce the problem: $ make -C tools/testing/selftests/ ... warning: ‘write’ reading 4294967295 bytes from a region of size 1 [-Wstringop-overread] warning: ‘read’ writing 4294967295 bytes into a region of size 25 overflows the destination [-Wstringop-overflow=] Signed-off-by: Rong Tao --- tools/testing/selftests/damon/huge_count_read_write.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/tools/testing/selftests/damon/huge_count_read_write.c b/tools/testing/selftests/damon/huge_count_read_write.c index ad7a6b4cf338..8fbe276870e7 100644 --- a/tools/testing/selftests/damon/huge_count_read_write.c +++ b/tools/testing/selftests/damon/huge_count_read_write.c @@ -8,6 +8,11 @@ #include #include +#pragma GCC diagnostic push +/* Ignore read(2) overflow and write(2) overread compile warnings */ +#pragma GCC diagnostic ignored "-Wstringop-overread" +#pragma GCC diagnostic ignored "-Wstringop-overflow" + void write_read_with_huge_count(char *file) { int filedesc = open(file, O_RDWR); @@ -27,6 +32,8 @@ void write_read_with_huge_count(char *file) close(filedesc); } +#pragma GCC diagnostic pop + int main(int argc, char *argv[]) { if (argc != 2) {