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Message-Id: <20100524223018.514814271@clark.site>
Date: Mon, 24 May 2010 15:28:14 -0700
From: Greg KH <gregkh@...e.de>
To: linux-kernel@...r.kernel.org, stable@...nel.org
Cc: stable-review@...nel.org, torvalds@...ux-foundation.org,
akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
Dan Carpenter <error27@...il.com>
Subject: [18/24] USB: fix testing the wrong variable in fs_create_by_name()
2.6.27-stable review patch. If anyone has any objections, please let us know.
------------------
From: Dan Carpenter <error27@...il.com>
commit fa7fe7af146a7b613e36a311eefbbfb5555325d1 upstream.
There is a typo here. We should be testing "*dentry" which was just
assigned instead of "dentry". This could result in dereferencing an
ERR_PTR inside either usbfs_mkdir() or usbfs_create().
Signed-off-by: Dan Carpenter <error27@...il.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>
---
drivers/usb/core/inode.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/usb/core/inode.c
+++ b/drivers/usb/core/inode.c
@@ -510,13 +510,13 @@ static int fs_create_by_name (const char
*dentry = NULL;
mutex_lock(&parent->d_inode->i_mutex);
*dentry = lookup_one_len(name, parent, strlen(name));
- if (!IS_ERR(dentry)) {
+ if (!IS_ERR(*dentry)) {
if ((mode & S_IFMT) == S_IFDIR)
error = usbfs_mkdir (parent->d_inode, *dentry, mode);
else
error = usbfs_create (parent->d_inode, *dentry, mode);
} else
- error = PTR_ERR(dentry);
+ error = PTR_ERR(*dentry);
mutex_unlock(&parent->d_inode->i_mutex);
return error;
--
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