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Fri, 11 Nov 2022 02:37:29 +0000 (UTC) X-FDA: 80119600218.10.8BD5E2A Received: from out162-62-58-211.mail.qq.com (out162-62-58-211.mail.qq.com [162.62.58.211]) by imf21.hostedemail.com (Postfix) with ESMTP id B4D291C0002 for ; Fri, 11 Nov 2022 02:37:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foxmail.com; s=s201512; t=1668134245; bh=BL3Df7T2fda2YYRMS2L+HCFmYgkJzAzwFsLU2JM9Hkw=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=rk3Tu7eAZzX5VmEahiBtqMj/7WXOVVOf0hJHJ+bOOnZAuYSbXJcV4RXBYZWVN/Cpt hHgl0lOBBuF4RAeTCq+eMtp14whOfOAf27RN/BhY6LqVNVeeNKkY2DWhzbQ7sEXi2f OLLPoH9Zys3L5NnoeRMN3UFCRyNs2Y6juwAmncyE= 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 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1668134249; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=BL3Df7T2fda2YYRMS2L+HCFmYgkJzAzwFsLU2JM9Hkw=; b=Iwcg4RIokL5Y5tXunvvc9+1qsqR/EFVkDCzTJP2iaosX4PKAKerQj20dz3IjRPh2Vjdllh fCRqRI6nrsVeR2a+vUFuyA3MmaXPO6PpO6WkwNaBbvMF9sCSKE+1yGhwhByg2WqrtV97Wj wTa1zeegBFKhl5T4x23t9no62o0TnO8= ARC-Authentication-Results: i=1; imf21.hostedemail.com; dkim=pass header.d=foxmail.com header.s=s201512 header.b=rk3Tu7eA; spf=pass (imf21.hostedemail.com: domain of rtoax@foxmail.com designates 162.62.58.211 as permitted sender) smtp.mailfrom=rtoax@foxmail.com; dmarc=pass (policy=none) header.from=foxmail.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1668134249; a=rsa-sha256; cv=none; b=d62f6EIUa0oawNHaSjaml139YMcXrIfS1fsKSW5Elv+DZyKIVbNI5c6o/xccP/QlrXPr3u zFx3wFGCanxgbKnmWUEle0k5Cx6WEdUIAIcqDEFx0B9h03D0mB4LByf+rRYW5xgY9KPZMC 9bC3XKcr+l3ZKJGJo2mSXR2MWKiGaOg= X-Rspam-User: X-Stat-Signature: 3q8mkdkrtork34orf61ohsbpo9dp3u1a X-Rspamd-Queue-Id: B4D291C0002 Authentication-Results: imf21.hostedemail.com; dkim=pass header.d=foxmail.com header.s=s201512 header.b=rk3Tu7eA; spf=pass (imf21.hostedemail.com: domain of rtoax@foxmail.com designates 162.62.58.211 as permitted sender) smtp.mailfrom=rtoax@foxmail.com; dmarc=pass (policy=none) header.from=foxmail.com X-Rspamd-Server: rspam02 X-HE-Tag: 1668134248-155058 X-Bogosity: Ham, tests=bogofilter, spamicity=0.067427, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: 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) { -- 2.31.1