From: Dan Carpenter <error27@gmail.com>
To: Greg Kroah-Hartman <gregkh@suse.de>
Cc: Alessio Igor Bogani <abogani@texware.it>,
linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
kernel-janitors@vger.kernel.org
Subject: [patch] usb: testing the wrong variable in fs_create_by_name()
Date: Thu, 22 Apr 2010 10:00:52 +0000 [thread overview]
Message-ID: <20100422100052.GT29647@bicker> (raw)
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@gmail.com>
diff --git a/drivers/usb/core/inode.c b/drivers/usb/core/inode.c
index 97b40ce..4a6366a 100644
--- a/drivers/usb/core/inode.c
+++ b/drivers/usb/core/inode.c
@@ -515,13 +515,13 @@ static int fs_create_by_name (const char *name, mode_t mode,
*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;
WARNING: multiple messages have this Message-ID (diff)
From: Dan Carpenter <error27@gmail.com>
To: Greg Kroah-Hartman <gregkh@suse.de>
Cc: Alessio Igor Bogani <abogani@texware.it>,
linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
kernel-janitors@vger.kernel.org
Subject: [patch] usb: testing the wrong variable in fs_create_by_name()
Date: Thu, 22 Apr 2010 12:00:52 +0200 [thread overview]
Message-ID: <20100422100052.GT29647@bicker> (raw)
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@gmail.com>
diff --git a/drivers/usb/core/inode.c b/drivers/usb/core/inode.c
index 97b40ce..4a6366a 100644
--- a/drivers/usb/core/inode.c
+++ b/drivers/usb/core/inode.c
@@ -515,13 +515,13 @@ static int fs_create_by_name (const char *name, mode_t mode,
*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;
next reply other threads:[~2010-04-22 10:00 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-22 10:00 Dan Carpenter [this message]
2010-04-22 10:00 ` [patch] usb: testing the wrong variable in fs_create_by_name() Dan Carpenter
2010-04-22 16:24 ` Greg KH
2010-04-22 16:24 ` Greg KH
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