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=-9.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 0CF0DC43387 for ; Wed, 26 Dec 2018 03:07:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C48AF20449 for ; Wed, 26 Dec 2018 03:07:13 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=umn.edu header.i=@umn.edu header.b="dKXPlvXq" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727059AbeLZDHM (ORCPT ); Tue, 25 Dec 2018 22:07:12 -0500 Received: from mta-p6.oit.umn.edu ([134.84.196.206]:45280 "EHLO mta-p6.oit.umn.edu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726966AbeLZDHM (ORCPT ); Tue, 25 Dec 2018 22:07:12 -0500 Received: from localhost (unknown [127.0.0.1]) by mta-p6.oit.umn.edu (Postfix) with ESMTP id 74967BC9 for ; Wed, 26 Dec 2018 03:07:10 +0000 (UTC) X-Virus-Scanned: amavisd-new at umn.edu Received: from mta-p6.oit.umn.edu ([127.0.0.1]) by localhost (mta-p6.oit.umn.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id uaMSmBtoVnWx for ; Tue, 25 Dec 2018 21:07:10 -0600 (CST) Received: from mail-it1-f198.google.com (mail-it1-f198.google.com [209.85.166.198]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mta-p6.oit.umn.edu (Postfix) with ESMTPS id 43B03923 for ; Tue, 25 Dec 2018 21:07:10 -0600 (CST) Received: by mail-it1-f198.google.com with SMTP id p66so17589424itc.0 for ; Tue, 25 Dec 2018 19:07:10 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=umn.edu; s=google; h=from:to:cc:subject:date:message-id; bh=LhRU0wMug2gxITDlzmtL48zridTwZEWJxDKC9s+/s6k=; b=dKXPlvXqsSqzvRsMggqukHpIsvS4rVWUFk4Ix2Un9GTeqBI0V8wNwzzG/73U0pglgb YC3Pun4UJUERRq6rndM629HL414HdqYopLWjTF+uqPmKBupLOQquFqCkQFAwf0D7/mQ/ GSA2g4XG+dQww4eEpowFbAS/zzJgrin3Ja3C+x8eOEOuOMf9DAcPrFEfIFTdljabzeGb TkkFvRIr7iDp/lADagn2YBXfZ/U9bxMfjbG8Ie0UeZv5N7+pdlwVSjfb7dcb8uIP6gZv fA94Z5nadXJUuz6xsxKoTi3RTllznKcVcsimIEnHEBaebMcpH+dy+iab86qIIoR1SQW7 +qnQ== 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; bh=LhRU0wMug2gxITDlzmtL48zridTwZEWJxDKC9s+/s6k=; b=ipaRycECtc+8HHbfj8KsFxTIDThRcG/QO8Gw554SAZiUtg9ep2Jqu3jg5oSP3X2mBI IaPAG1FsYraJVGkc5+ArBMkyA1aIN285S7v9e+Hb7ftQ3qa/HE7t2fOmYur1lhVtxVrx gbPVxwzntWssmxawdiJer+/uVuKxPm6RdmdWv1ZV+ZZ0s8KoYi9nQS51hXdA4SJDEV7n oLt4l7qfW/lCD+gXBG8gXBDF8jc53PJ024E/ULYDHOlNTXU78Lxm4sMSceDK9cdPaPC5 Mz447QllkuUXJtlIq447OOzQkPgZwi2lq9IBQnxDpogCZAbJkxY4VhjY2BmwZC0FC4ph vqJA== X-Gm-Message-State: AA+aEWbNCuFaV1WbyV54NLd8lDS+c7iHhOFJpN3eW/il0VasojowkB5M KpR0uWHbBvx6jnoofSdawa1mtYIQxlhJ4vMTlHWt2p+62/5JUaYezBT/kpf6LFZ3UZxpTJO9gS7 EeyVt3oP6KuPh4zHpyzweCNOIAhCT X-Received: by 2002:a02:13c6:: with SMTP id 189mr11943110jaz.117.1545793629858; Tue, 25 Dec 2018 19:07:09 -0800 (PST) X-Google-Smtp-Source: AFSGD/VeH++B1DjGUaMFYkI1G8QzaRpqcTJ4lOjw6UImLKNlQ1R8Ugh3J/oSuM8UNPkIA4bH1IoGgA== X-Received: by 2002:a02:13c6:: with SMTP id 189mr11943101jaz.117.1545793629621; Tue, 25 Dec 2018 19:07:09 -0800 (PST) Received: from localhost.localdomain (host-173-230-104-22.mnmigsc.mn.minneapolis.us.clients.pavlovmedia.net. [173.230.104.22]) by smtp.gmail.com with ESMTPSA id g21sm6325883itg.44.2018.12.25.19.07.08 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Tue, 25 Dec 2018 19:07:08 -0800 (PST) From: Kangjie Lu To: kjlu@umn.edu Cc: pakki001@umn.edu, Alexey Dobriyan , Andrew Morton , Davidlohr Bueso , David Howells , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org Subject: [PATCH] fs: proc: check status of register_filesystem Date: Tue, 25 Dec 2018 21:06:40 -0600 Message-Id: <20181226030642.72757-1-kjlu@umn.edu> X-Mailer: git-send-email 2.17.2 (Apple Git-113) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org register_filesystem() could fail. The fix issues an error message if it fails. Signed-off-by: Kangjie Lu --- fs/proc/root.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/proc/root.c b/fs/proc/root.c index f4b1a9d2eca6..7dcd947cba23 100644 --- a/fs/proc/root.c +++ b/fs/proc/root.c @@ -141,7 +141,8 @@ void __init proc_root_init(void) proc_mkdir("bus", NULL); proc_sys_init(); - register_filesystem(&proc_fs_type); + if (register_filesystem(&proc_fs_type)) + pr_err("failed to register the filesystem.\n"); } static int proc_root_getattr(const struct path *path, struct kstat *stat, -- 2.17.2 (Apple Git-113)