Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932423AbWE3TJI (ORCPT ); Tue, 30 May 2006 15:09:08 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932367AbWE3TJH (ORCPT ); Tue, 30 May 2006 15:09:07 -0400 Received: from e34.co.us.ibm.com ([32.97.110.152]:48776 "EHLO e34.co.us.ibm.com") by vger.kernel.org with ESMTP id S932423AbWE3TJG (ORCPT ); Tue, 30 May 2006 15:09:06 -0400 Date: Tue, 30 May 2006 14:08:53 -0500 From: Michael Halcrow To: akpm@osdl.org Cc: linux-kernel@vger.kernel.org Subject: [PATCH] Fix premature release of file_info memory in eCryptfs Message-ID: <20060530190853.GC3098@us.ibm.com> Reply-To: Michael Halcrow Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1700 Lines: 49 The file_info struct is being released, and then one of its members is referenced from the released memory. This patch cleans up the function and moves the release so that it occurs after the reference. Signed-off-by: Michael Halcrow --- fs/ecryptfs/file.c | 15 ++++++--------- 1 files changed, 6 insertions(+), 9 deletions(-) 1e22635a873a0b0179a8b033e75234dd83a3bb9f diff --git a/fs/ecryptfs/file.c b/fs/ecryptfs/file.c index c4ea9f0..b9cdb85 100644 --- a/fs/ecryptfs/file.c +++ b/fs/ecryptfs/file.c @@ -304,18 +304,15 @@ static int ecryptfs_flush(struct file *f return rc; } -static int ecryptfs_release(struct inode *ecryptfs_inode, struct file *file) +static int ecryptfs_release(struct inode *inode, struct file *file) { - struct file *lower_file; - struct ecryptfs_file_info *file_info; - struct inode *lower_inode; + struct file *lower_file = ecryptfs_file_to_lower(file); + struct ecryptfs_file_info *file_info = ecryptfs_file_to_private(file); + struct inode *lower_inode = ecryptfs_inode_to_lower(inode); - file_info = ecryptfs_file_to_private(file); - kmem_cache_free(ecryptfs_file_info_cache, file_info); - lower_file = ecryptfs_file_to_lower(file); fput(lower_file); - lower_inode = ecryptfs_inode_to_lower(ecryptfs_inode); - ecryptfs_inode->i_blocks = lower_inode->i_blocks; + inode->i_blocks = lower_inode->i_blocks; + kmem_cache_free(ecryptfs_file_info_cache, file_info); return 0; } -- 1.3.3 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/