[Ocfs2-devel] [PATCH] ocfs2: Fix error handling when creating debugfs root in ocfs2_init()

[Jan Kara]

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 at suse.cz>
---
 fs/ocfs2/super.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

This replaces patch "ocfs2: Remove pointless assignment in ocfs2_init()".
Things are safer this way and when debugfs dir creation fails, something is
really wrong.

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();
-- 
1.8.1.4