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[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-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP 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,