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From: Greg KH <gregkh@suse.de>
To: linux-kernel@vger.kernel.org, stable@kernel.org
Cc: stable-review@kernel.org, torvalds@linux-foundation.org,
	akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk,
	Dan Carpenter <error27@gmail.com>
Subject: [15/25] USB: fix testing the wrong variable in fs_create_by_name()
Date: Tue, 25 May 2010 11:09:13 -0700	[thread overview]
Message-ID: <20100525181213.565182425@clark.site> (raw)
In-Reply-To: <20100525181259.GA18630@kroah.com>

2.6.27-stable review patch.  If anyone has any objections, please let us know.

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

From: Dan Carpenter <error27@gmail.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@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.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;



  parent reply	other threads:[~2010-05-25 18:19 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-05-25 18:12 [00/25] 2.6.27.47-stable review, take 2 Greg KH
2010-05-25 18:08 ` [01/25] ALSA: mixart: range checking proc file Greg KH
2010-05-25 18:09 ` [02/25] ext4: invalidate pages if delalloc block allocation fails Greg KH
2010-05-25 18:09 ` [03/25] percpu counter: clean up percpu_counter_sum_and_set() Greg KH
2010-05-25 18:09 ` [04/25] ext4: Make sure all the block allocation paths reserve blocks Greg KH
2010-05-25 18:09 ` [05/25] ext4: Add percpu dirty block accounting Greg KH
2010-05-25 18:09 ` [06/25] ext4: Retry block reservation Greg KH
2010-05-25 18:09 ` [07/25] ext4: Retry block allocation if we have free blocks left Greg KH
2010-05-25 18:09 ` [08/25] ext4: Use tag dirty lookup during mpage_da_submit_io Greg KH
2010-05-25 18:09 ` [09/25] vfs: Remove the range_cont writeback mode Greg KH
2010-05-25 18:09 ` [10/25] tty: release_one_tty() forgets to put pids Greg KH
2010-05-25 18:09 ` [11/25] [SCSI] megaraid_sas: fix for 32bit apps Greg KH
2010-05-25 18:09 ` [12/25] trace: Fix inappropriate substraction on tracing_pages_allocated in trace_free_page() Greg KH
2010-05-25 18:09 ` [13/25] clockevent: Prevent dead lock on clockevents_lock Greg KH
2010-05-25 18:09 ` [14/25] nfsd4: bug in read_buf Greg KH
2010-05-25 18:09 ` Greg KH [this message]
2010-05-25 18:09 ` [16/25] nfs d_revalidate() is too trigger-happy with d_drop() Greg KH
2010-05-25 18:09 ` [17/25] NFS: rsize and wsize settings ignored on v4 mounts Greg KH
2010-05-25 18:09 ` [18/25] i2c: Fix probing of FSC hardware monitoring chips Greg KH
2010-05-25 18:09 ` [19/25] libata: ensure NCQ error result taskfile is fully initialized before returning it via qc->result_tf Greg KH
2010-05-25 18:09 ` [20/25] libata: retry FS IOs even if it has failed with AC_ERR_INVALID Greg KH
2010-05-25 18:09 ` [21/25] svc: Clean up deferred requests on transport destruction Greg KH
2010-05-25 18:09 ` [22/25] hwmon: (w83781d) Request I/O ports individually for probing Greg KH
2010-05-25 18:09 ` [23/25] i2c-i801: Dont use the block buffer for I2C block writes Greg KH
2010-05-25 18:09 ` [24/25] i2c-tiny-usb: Fix on big-endian systems Greg KH
2010-05-25 18:09 ` [25/25] nfsd: fix vm overcommit crash Greg KH

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