From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Liu Bo , Chris Mason Subject: [PATCH 3.14 101/110] Btrfs: use right type to get real comparison Date: Sat, 28 Jun 2014 10:47:38 -0700 Message-Id: <20140628174551.425334649@linuxfoundation.org> In-Reply-To: <20140628174545.354748696@linuxfoundation.org> References: <20140628174545.354748696@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: 3.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Liu Bo commit cd857dd6bc2ae9ecea14e75a34e8a8fdc158e307 upstream. We want to make sure the point is still within the extent item, not to verify the memory it's pointing to. Signed-off-by: Liu Bo Signed-off-by: Chris Mason Signed-off-by: Greg Kroah-Hartman --- fs/btrfs/backref.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/fs/btrfs/backref.c +++ b/fs/btrfs/backref.c @@ -1431,7 +1431,7 @@ static int __get_extent_inline_ref(unsig *out_eiref = (struct btrfs_extent_inline_ref *)(ei + 1); } *ptr = (unsigned long)*out_eiref; - if ((void *)*ptr >= (void *)ei + item_size) + if ((unsigned long)(*ptr) >= (unsigned long)ei + item_size) return -ENOENT; }