linux-kernel - [PATCH 2/3] sysfs: fix condition check in sysfs_drop

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Message-Id: <11816905694164-git-send-email-gregkh@suse.de>
Date:	Tue, 12 Jun 2007 16:22:45 -0700
From:	Greg Kroah-Hartman <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org
Cc:	Tejun Heo <htejun@...il.com>, Greg Kroah-Hartman <gregkh@...e.de>
Subject: [PATCH 2/3] sysfs: fix condition check in sysfs_drop_dentry()

From: Tejun Heo <htejun@...il.com>

The condition check doesn't make much sense as it basically always
succeeds.  This causes NULL dereferencing on certain cases.  It seems
that parentheses are put in the wrong place.  Fix it.

Signed-off-by: Tejun Heo <htejun@...il.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>
---
 fs/sysfs/inode.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/fs/sysfs/inode.c b/fs/sysfs/inode.c
index 082e2d4..38bbe07 100644
--- a/fs/sysfs/inode.c
+++ b/fs/sysfs/inode.c
@@ -252,7 +252,7 @@ void sysfs_drop_dentry(struct sysfs_dirent * sd, struct dentry * parent)
 	if (dentry) {
 		spin_lock(&dcache_lock);
 		spin_lock(&dentry->d_lock);
-		if (!(d_unhashed(dentry) && dentry->d_inode)) {
+		if (!d_unhashed(dentry) && dentry->d_inode) {
 			inode = dentry->d_inode;
 			spin_lock(&inode->i_lock);
 			__iget(inode);
-- 
1.5.2.1

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