From: Jan Kara <jack@suse.cz>
Date: Wed, 10 Dec 2014 23:41:56 +0000 (-0800)
Subject: ocfs2: fix error handling when creating debugfs root in ocfs2_init()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=dc17158060fb57f49c310a7def12fdaeddf35b19;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

ocfs2: fix error handling when creating debugfs root in ocfs2_init()

Error handling if creation of root of debugfs in ocfs2_init() fails is
broken.  Although error code is set we fail to exit ocfs2_init() with
error and thus initialization ends with success.  Later when mounting a
filesystem, ocfs2 debugfs entries end up being created in the root of
debugfs filesystem which is confusing.

Fix the error handling to bail out.

Coverity id: 1227009.

Signed-off-by: Jan Kara <jack@suse.cz>
Reviewed-by: Joseph Qi <joseph.qi@huawei.com>
Cc: Mark Fasheh <mfasheh@suse.com>
Cc: Joel Becker <jlbec@evilplan.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index 93c85bc745e1..8e3ac25efb9f 100644
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -1622,8 +1622,9 @@ static int __init ocfs2_init(void)
 
 	ocfs2_debugfs_root = debugfs_create_dir("ocfs2", NULL);
 	if (!ocfs2_debugfs_root) {
-		status = -EFAULT;
+		status = -ENOMEM;
 		mlog(ML_ERROR, "Unable to create ocfs2 debugfs root.\n");
+		goto out4;
 	}
 
 	ocfs2_set_locking_protocol();