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 X-Spam-Level: X-Spam-Status: No, score=-12.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 208B2C4363D for ; Mon, 12 Oct 2020 14:04:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E069F20757 for ; Mon, 12 Oct 2020 14:04:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390944AbgJLOEb (ORCPT ); Mon, 12 Oct 2020 10:04:31 -0400 Received: from youngberry.canonical.com ([91.189.89.112]:49861 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730766AbgJLODo (ORCPT ); Mon, 12 Oct 2020 10:03:44 -0400 Received: from 1.general.cking.uk.vpn ([10.172.193.212] helo=localhost) by youngberry.canonical.com with esmtpsa (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.86_2) (envelope-from ) id 1kRyQP-0003fj-Cq; Mon, 12 Oct 2020 14:03:41 +0000 From: Colin King To: Alexander Viro , Jens Axboe , Pavel Begunkov , linux-fsdevel@vger.kernel.org, io-uring@vger.kernel.org Cc: kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH][next] io_uring: Fix sizeof() mismatch Date: Mon, 12 Oct 2020 15:03:41 +0100 Message-Id: <20201012140341.77412-1-colin.king@canonical.com> X-Mailer: git-send-email 2.27.0 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org From: Colin Ian King An incorrect sizeof() is being used, sizeof(file_data->table) is not correct, it should be sizeof(*file_data->table). Addresses-Coverity: ("Sizeof not portable (SIZEOF_MISMATCH)") Fixes: 5398ae698525 ("io_uring: clean file_data access in files_register") Signed-off-by: Colin Ian King --- fs/io_uring.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/io_uring.c b/fs/io_uring.c index b58169240c77..6b30670fffbd 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -7306,7 +7306,7 @@ static int io_sqe_files_register(struct io_ring_ctx *ctx, void __user *arg, spin_lock_init(&file_data->lock); nr_tables = DIV_ROUND_UP(nr_args, IORING_MAX_FILES_TABLE); - file_data->table = kcalloc(nr_tables, sizeof(file_data->table), + file_data->table = kcalloc(nr_tables, sizeof(*file_data->table), GFP_KERNEL); if (!file_data->table) goto out_free; -- 2.27.0