Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753070AbYJ2FZJ (ORCPT ); Wed, 29 Oct 2008 01:25:09 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752558AbYJ2FYQ (ORCPT ); Wed, 29 Oct 2008 01:24:16 -0400 Received: from rv-out-0506.google.com ([209.85.198.233]:62508 "EHLO rv-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752460AbYJ2FYP (ORCPT ); Wed, 29 Oct 2008 01:24:15 -0400 Message-ID: <9ae48b020810282224x31706492mdbaae102909ba63b@mail.gmail.com> Date: Tue, 28 Oct 2008 22:24:14 -0700 From: "Ed Swierk" To: linux-kernel@vger.kernel.org Subject: [PATCH] Fix range check on mmaped sysfs resource files MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_Part_69510_16016096.1225257854392" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1809 Lines: 37 ------=_Part_69510_16016096.1225257854392 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline pci_mmap_fits() in 2.6.27.4 returns the wrong answer if the sysfs resource file size is not a multiple of the page size. vm_end and vm_start are already page-aligned, so size - start < nr, causing mmap() to return EINVAL. Signed-off-by: Ed Swierk ------=_Part_69510_16016096.1225257854392 Content-Type: application/octet-stream; name=linux-2.6.27-pci-sysfs-mmap-bug.patch Content-Transfer-Encoding: base64 X-Attachment-Id: f_fmviqei40 Content-Disposition: attachment; filename=linux-2.6.27-pci-sysfs-mmap-bug.patch SW5kZXg6IGxpbnV4LTIuNi4yNy40L2RyaXZlcnMvcGNpL3BjaS1zeXNmcy5jCj09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT0K LS0tIGxpbnV4LTIuNi4yNy40Lm9yaWcvZHJpdmVycy9wY2kvcGNpLXN5c2ZzLmMKKysrIGxpbnV4 LTIuNi4yNy40L2RyaXZlcnMvcGNpL3BjaS1zeXNmcy5jCkBAIC00OTIsNyArNDkyLDcgQEAgc3Rh dGljIGludCBwY2lfbW1hcF9maXRzKHN0cnVjdCBwY2lfZGV2IAogCiAJbnIgPSAodm1hLT52bV9l bmQgLSB2bWEtPnZtX3N0YXJ0KSA+PiBQQUdFX1NISUZUOwogCXN0YXJ0ID0gdm1hLT52bV9wZ29m ZjsKLQlzaXplID0gcGNpX3Jlc291cmNlX2xlbihwZGV2LCByZXNubykgPj4gUEFHRV9TSElGVDsK KwlzaXplID0gKChwY2lfcmVzb3VyY2VfbGVuKHBkZXYsIHJlc25vKSAtIDEpID4+IFBBR0VfU0hJ RlQpICsgMTsKIAlpZiAoc3RhcnQgPCBzaXplICYmIHNpemUgLSBzdGFydCA+PSBucikKIAkJcmV0 dXJuIDE7CiAJV0FSTigxLCAicHJvY2VzcyBcIiVzXCIgdHJpZWQgdG8gbWFwIDB4JTA4bHgtMHgl MDhseCBvbiAlcyBCQVIgJWQgKHNpemUgMHglMDhseClcbiIsCg== ------=_Part_69510_16016096.1225257854392-- -- 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/