From patchwork Wed Jun 17 22:03:24 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kees Cook X-Patchwork-Id: 11610781 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 27310913 for ; Wed, 17 Jun 2020 22:03:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0E87221852 for ; Wed, 17 Jun 2020 22:03:32 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="AssCNT+f" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727065AbgFQWDc (ORCPT ); Wed, 17 Jun 2020 18:03:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44902 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726761AbgFQWDc (ORCPT ); Wed, 17 Jun 2020 18:03:32 -0400 Received: from mail-pj1-x1041.google.com (mail-pj1-x1041.google.com [IPv6:2607:f8b0:4864:20::1041]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0C348C06174E for ; Wed, 17 Jun 2020 15:03:32 -0700 (PDT) Received: by mail-pj1-x1041.google.com with SMTP id b7so2696010pju.0 for ; Wed, 17 Jun 2020 15:03:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=d7bw5q/TJxpqMicrHyIFon0t9gt+svhVPDuc7AUFnrI=; b=AssCNT+fl7FZXIZEydCky+FoEabK9WHSRC/Cz7t+GsLm7aO2UJ/YytOxHd1B0j1e+l XnLm1Rt+qfp2EUmGG/yFhjq91D26f7ku2eo0bUwGuEdGWnmwt6HPJOj85Snm44Eef3sC VVnAeX1Tp5FyYfkxWhsd8A7EzPvh9OS4GeLdE= 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:in-reply-to :references:mime-version:content-transfer-encoding; bh=d7bw5q/TJxpqMicrHyIFon0t9gt+svhVPDuc7AUFnrI=; b=kQv52QJsY60pBwXFUEWmrhW8vLy0fG/ni+L7L8V7ggYfGUirkhqok/V9sleWHKLpmk fekFeeK1JAwOVQPBLNfQc0Vs/YOHXuY4VgHuy571Fe7xgKa5a73WuzlF3jI902U2+gIM gilYcOU5UvuqZlep+FWKd08HxaZJXB9lkDkHdHClyN8uobXXrQ5mJ9TIiBK1duKjW/TU qoSKEf7GVhQi82rl9eqIgCHQpfAj4ybV/ye5WebjFujc2XXOJjXvbNisCjln/I0ANxqB U+enDQGvRcbFYIh51oeJrMszTVON7rJISxjTffgLEMiMWbXByfkpUVnvGs0PRFD7/Rk3 e/Rw== X-Gm-Message-State: AOAM5337luZgbgeWIkyaKN0fVrPBYJ6GoB5KTmxnrZAyi+o2CH5Gexp2 QIuw3y/g16+ixZQkx0RQJCX0Hw== X-Google-Smtp-Source: ABdhPJy8S/6IprS//E4loSZ1ZgKk4AjU+iw9QdwwDUrpFc38iJU+1J4kMZ7xNS+1rFNTzrhm1LjJ3w== X-Received: by 2002:a17:90a:f3c4:: with SMTP id ha4mr1155509pjb.18.1592431411577; Wed, 17 Jun 2020 15:03:31 -0700 (PDT) Received: from www.outflux.net (smtp.outflux.net. [198.145.64.163]) by smtp.gmail.com with ESMTPSA id n24sm461968pjt.47.2020.06.17.15.03.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 17 Jun 2020 15:03:30 -0700 (PDT) From: Kees Cook To: linux-kernel@vger.kernel.org Cc: Kees Cook , Sargun Dhillon , Christian Brauner , Tycho Andersen , David Laight , Christoph Hellwig , "David S. Miller" , Jakub Kicinski , Alexander Viro , Aleksa Sarai , Matt Denton , Jann Horn , Chris Palmer , Robert Sesek , Giuseppe Scrivano , Greg Kroah-Hartman , Andy Lutomirski , Will Drewry , Shuah Khan , netdev@vger.kernel.org, containers@lists.linux-foundation.org, linux-api@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kselftest@vger.kernel.org Subject: [PATCH v5 4/7] pidfd: Replace open-coded partial fd_install_received() Date: Wed, 17 Jun 2020 15:03:24 -0700 Message-Id: <20200617220327.3731559-5-keescook@chromium.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200617220327.3731559-1-keescook@chromium.org> References: <20200617220327.3731559-1-keescook@chromium.org> MIME-Version: 1.0 Sender: linux-kselftest-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org The sock counting (sock_update_netprioidx() and sock_update_classid()) was missing from pidfd's implementation of received fd installation. Replace the open-coded version with a call to the new fd_install_received() helper. Fixes: 8649c322f75c ("pid: Implement pidfd_getfd syscall") Signed-off-by: Kees Cook --- kernel/pid.c | 11 +---------- 1 file changed, 1 insertion(+), 10 deletions(-) diff --git a/kernel/pid.c b/kernel/pid.c index f1496b757162..24924ec5df0e 100644 --- a/kernel/pid.c +++ b/kernel/pid.c @@ -635,18 +635,9 @@ static int pidfd_getfd(struct pid *pid, int fd) if (IS_ERR(file)) return PTR_ERR(file); - ret = security_file_receive(file); - if (ret) { - fput(file); - return ret; - } - - ret = get_unused_fd_flags(O_CLOEXEC); + ret = fd_install_received(file, O_CLOEXEC); if (ret < 0) fput(file); - else - fd_install(ret, file); - return ret; }