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=-4.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=no 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 5377BC433E0 for ; Wed, 13 May 2020 23:33:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4665720693 for ; Wed, 13 May 2020 23:33:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1589412806; bh=To9Yoi94bEPQmPx2gVzZTvirL9XpdBbjsGrGmQCA8js=; h=From:To:Cc:Subject:Date:List-ID:From; b=Wg9snw1nEgRDtdmGSw1C+2ZyIdQBbpI9qfT9JSyS+42v7dHL3RqNrvB3TNoqWLC6G qAZTnX8qbf/HrwKr9odccTNI/xhKvEZ9P+JO8MSWO893RU2hzwKLwPjaIoYCL1q7ZM aj0JB3S7Rt4I9m8jTrSD4qk3NPir0M70GN8ZCqy4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732660AbgEMXdZ (ORCPT ); Wed, 13 May 2020 19:33:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36988 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1732523AbgEMXdY (ORCPT ); Wed, 13 May 2020 19:33:24 -0400 Received: from mail-il1-x141.google.com (mail-il1-x141.google.com [IPv6:2607:f8b0:4864:20::141]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4268DC061A0E for ; Wed, 13 May 2020 16:33:24 -0700 (PDT) Received: by mail-il1-x141.google.com with SMTP id j3so1441061ilk.11 for ; Wed, 13 May 2020 16:33:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=pFfNmewz/mfCHMNh9XV194PnShatk6k9H447JJUGz6c=; b=CWlvd078GIR1ibZh6d8sahfhrI+/49floa8rvRRu809XIw7S/8SbgeF4DBpC7fIQSy 0oZ/igGCFgfu7HSisKnk3pUfXmzQbB5wcfcyIpnwL7XjjUwwMfk8AI+JPTNPS2/kbtfY kUyA+XkxSys6iB83dmwD8RALiGFE1YjV+LxKU= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=pFfNmewz/mfCHMNh9XV194PnShatk6k9H447JJUGz6c=; b=jvPVKlV1FotFcQoy2Xk0GToxiNKHx1ut6w2VZ4DHGUyXcVzk06iiLLaKZt/4A7avXW YxEjYJyeoDF5migCjeQ1kclyH4nYwbOj4UiWDk+cFxi+Fa79yTpmaJVVgaHOISGcraep Su2mtXzvK5VxaHXy1KN2AUxrHwMPeYN5B2f7npPF4b6IfmPEEbNOyHwY3yJgLy1K/DNO KxCYAvDscjnYMWP7HAHMnIserqjVVAICWgu3hOk8rxJohz3qp42biejc0i/cOXE7Rxgv GSczscVOahEmQ7qfNQUoIXR6aNLrTdf6gkGP8t4VFOG0LWBOIiBPujtqhMMCa6xE0ip1 cQAA== X-Gm-Message-State: AOAM533m8/KxU9K1MczKxrXDpD0kkeMeUfj2Ayhl3E6Jmi/dYEFCiDAG VyubTfiWLJtIoV/JiOIV0JCNOg== X-Google-Smtp-Source: ABdhPJxUwwRpGwbnaEJPsLawzpT73ikpudZeKLQy0f/z7118JbmJJ4IwYR6fXfE67wE3QRnF1kkUSA== X-Received: by 2002:a05:6e02:4cd:: with SMTP id f13mr2022503ils.300.1589412803580; Wed, 13 May 2020 16:33:23 -0700 (PDT) Received: from shuah-t480s.internal (c-24-9-64-241.hsd1.co.comcast.net. [24.9.64.241]) by smtp.gmail.com with ESMTPSA id b1sm398072ilr.23.2020.05.13.16.33.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 13 May 2020 16:33:23 -0700 (PDT) From: Shuah Khan To: viro@zeniv.linux.org.uk, axboe@kernel.dk, zohar@linux.vnet.ibm.com, mcgrof@kernel.org, keescook@chromium.org Cc: Shuah Khan , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v3 0/2] fs: avoid fdput() after failed fdget() Date: Wed, 13 May 2020 17:33:19 -0600 Message-Id: X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org While debugging an unrelated problem, I noticed these two cases fdput() is called after failed fdget() while reviewing at all the fdget() and fdput() paths in the kernel. Changes since v2: Patches 1&2 changed to get rid of goto. Changes since v1: Patch 1: Changed to address review comments to refine the code for improved readability in addition to the change to avoid fdput() on failed fdget() Patch 2: No change to v1. Including it in the series to keep the patches together. Shuah Khan (2): fs: avoid fdput() after failed fdget() in ksys_sync_file_range() fs: avoid fdput() after failed fdget() in kernel_read_file_from_fd() fs/exec.c | 6 +++--- fs/sync.c | 10 +++++----- 2 files changed, 8 insertions(+), 8 deletions(-) -- 2.25.1