linux-kernel - [PATCH 3.14 070/122] nfs: Fix use of uninitialized variable in nfs

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Message-Id: <20141119205211.119292502@linuxfoundation.org>
Date:	Wed, 19 Nov 2014 12:52:00 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Jan Kara <jack@...e.cz>,
	Trond Myklebust <trond.myklebust@...marydata.com>
Subject: [PATCH 3.14 070/122] nfs: Fix use of uninitialized variable in nfs_getattr()

3.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jan Kara <jack@...e.cz>

commit 16caf5b6101d03335b386e77e9e14136f989be87 upstream.

Variable 'err' needn't be initialized when nfs_getattr() uses it to
check whether it should call generic_fillattr() or not. That can result
in spurious error returns. Initialize 'err' properly.

Signed-off-by: Jan Kara <jack@...e.cz>
Signed-off-by: Trond Myklebust <trond.myklebust@...marydata.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 fs/nfs/inode.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -592,7 +592,7 @@ int nfs_getattr(struct vfsmount *mnt, st
 {
 	struct inode *inode = dentry->d_inode;
 	int need_atime = NFS_I(inode)->cache_validity & NFS_INO_INVALID_ATIME;
-	int err;
+	int err = 0;
 
 	trace_nfs_getattr_enter(inode);
 	/* Flush out writes to the server in order to update c/mtime.  */


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