From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EF35F1FB7 for ; Fri, 25 Mar 2022 01:09:23 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9F96FC340ED; Fri, 25 Mar 2022 01:09:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1648170563; bh=I4n0cuNWnNTimok2wV5y+1RxmAXDYMxo3HM9EsyIPJQ=; h=Date:To:From:In-Reply-To:Subject:From; b=WRVkTICiONqznF4aeqYSAu1Gu3yYiUGMYAqmwjqnocvozIYJAdS6BagrFrXkiqgwM MPPsxF0Mnc2n67T/OCjvlEJeAaNZbDrDkE6wrOzu+M4gFy9npNNOrttMkMOLhmgcnN HPz5A4DRNemoFf9zrU10R3e6OOF/PSgPuugV/ycU= Date: Thu, 24 Mar 2022 18:09:23 -0700 To: zhangyinan2019@email.szu.edu.cn,weizhenliang@huawei.com,sfr@canb.auug.org.au,caoyixuan2019@email.szu.edu.cn,yejiajian2018@email.szu.edu.cn,akpm@linux-foundation.org,patches@lists.linux.dev,linux-mm@kvack.org,mm-commits@vger.kernel.org,torvalds@linux-foundation.org,akpm@linux-foundation.org From: Andrew Morton In-Reply-To: <20220324180758.96b1ac7e17675d6bc474485e@linux-foundation.org> Subject: [patch 016/114] tools/vm/page_owner_sort.c: add a security check Message-Id: <20220325010923.9F96FC340ED@smtp.kernel.org> Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: From: Jiajian Ye Subject: tools/vm/page_owner_sort.c: add a security check Add a security check after using malloc() to allocate memory. Link: https://lkml.kernel.org/r/20220301151438.166118-2-yejiajian2018@email.szu.edu.cn Signed-off-by: Jiajian Ye Cc: Stephen Rothwell Cc: Yinan Zhang Cc: Yixuan Cao Cc: Zhenliang Wei Signed-off-by: Andrew Morton --- tools/vm/page_owner_sort.c | 6 ++++++ 1 file changed, 6 insertions(+) --- a/tools/vm/page_owner_sort.c~tools-vm-page_owner_sortc-add-a-security-check +++ a/tools/vm/page_owner_sort.c @@ -217,7 +217,13 @@ static void add_list(char *buf, int len) printf("max_size too small??\n"); exit(1); } + list[list_size].txt = malloc(len+1); + if (!list[list_size].txt) { + printf("Out of memory\n"); + exit(1); + } + list[list_size].len = len; list[list_size].num = 1; list[list_size].page_num = get_page_num(buf); _