From owner-svn-src-stable@freebsd.org Mon Nov 9 11:27:33 2015 Return-Path: Delivered-To: svn-src-stable@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 29EC9A2A462; Mon, 9 Nov 2015 11:27:33 +0000 (UTC) (envelope-from hselasky@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id C990D159D; Mon, 9 Nov 2015 11:27:32 +0000 (UTC) (envelope-from hselasky@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id tA9BRV6T052432; Mon, 9 Nov 2015 11:27:31 GMT (envelope-from hselasky@FreeBSD.org) Received: (from hselasky@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id tA9BRVSu052430; Mon, 9 Nov 2015 11:27:31 GMT (envelope-from hselasky@FreeBSD.org) Message-Id: <201511091127.tA9BRVSu052430@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: hselasky set sender to hselasky@FreeBSD.org using -f From: Hans Petter Selasky Date: Mon, 9 Nov 2015 11:27:31 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-9@freebsd.org Subject: svn commit: r290608 - stable/9/sys/dev/usb/net X-SVN-Group: stable-9 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-stable@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: SVN commit messages for all the -stable branches of the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 09 Nov 2015 11:27:33 -0000 Author: hselasky Date: Mon Nov 9 11:27:31 2015 New Revision: 290608 URL: https://svnweb.freebsd.org/changeset/base/290608 Log: MFC r290441: Fix for unaligned IP-header. The mbuf length fields must be set before m_adj() is called else m_adj() will not always adjust the mbuf and an unaligned read exception can trigger inside the network stack. This can happen on platforms where unaligned reads are not supported. Adjust a length check to include the 2-byte ethernet alignment while at it. Modified: stable/9/sys/dev/usb/net/if_cdce.c stable/9/sys/dev/usb/net/if_urndis.c Directory Properties: stable/9/sys/ (props changed) stable/9/sys/dev/ (props changed) Modified: stable/9/sys/dev/usb/net/if_cdce.c ============================================================================== --- stable/9/sys/dev/usb/net/if_cdce.c Mon Nov 9 11:24:59 2015 (r290607) +++ stable/9/sys/dev/usb/net/if_cdce.c Mon Nov 9 11:27:31 2015 (r290608) @@ -1381,6 +1381,7 @@ cdce_ncm_bulk_read_callback(struct usb_x /* check if we have a buffer */ if (m) { + m->m_len = m->m_pkthdr.len = temp + ETHER_ALIGN; m_adj(m, ETHER_ALIGN); usbd_copy_out(pc, offset, m->m_data, temp); Modified: stable/9/sys/dev/usb/net/if_urndis.c ============================================================================== --- stable/9/sys/dev/usb/net/if_urndis.c Mon Nov 9 11:24:59 2015 (r290607) +++ stable/9/sys/dev/usb/net/if_urndis.c Mon Nov 9 11:27:31 2015 (r290608) @@ -848,7 +848,7 @@ urndis_bulk_read_callback(struct usb_xfe DPRINTF("invalid ethernet size " "%u < %u\n", msg.rm_datalen, (unsigned)sizeof(struct ether_header)); goto tr_setup; - } else if (msg.rm_datalen > (uint32_t)MCLBYTES) { + } else if (msg.rm_datalen > (uint32_t)(MCLBYTES - ETHER_ALIGN)) { ifp->if_ierrors++; DPRINTF("invalid ethernet size " "%u > %u\n", @@ -862,6 +862,7 @@ urndis_bulk_read_callback(struct usb_xfe /* check if we have a buffer */ if (m != NULL) { + m->m_len = m->m_pkthdr.len = msg.rm_datalen + ETHER_ALIGN; m_adj(m, ETHER_ALIGN); usbd_copy_out(pc, offset + msg.rm_dataoffset +