From owner-svn-src-all@freebsd.org Mon Jan 22 20:49:19 2018 Return-Path: Delivered-To: svn-src-all@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 15AAEED4E06; Mon, 22 Jan 2018 20:49:19 +0000 (UTC) (envelope-from kib@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id E5CC06DEF6; Mon, 22 Jan 2018 20:49:18 +0000 (UTC) (envelope-from kib@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 mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 1ABDA1F442; Mon, 22 Jan 2018 20:49:18 +0000 (UTC) (envelope-from kib@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id w0MKnHPa037960; Mon, 22 Jan 2018 20:49:17 GMT (envelope-from kib@FreeBSD.org) Received: (from kib@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id w0MKnHHE037959; Mon, 22 Jan 2018 20:49:17 GMT (envelope-from kib@FreeBSD.org) Message-Id: <201801222049.w0MKnHHE037959@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: kib set sender to kib@FreeBSD.org using -f From: Konstantin Belousov Date: Mon, 22 Jan 2018 20:49:17 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r328264 - head/sys/net X-SVN-Group: head X-SVN-Commit-Author: kib X-SVN-Commit-Paths: head/sys/net X-SVN-Commit-Revision: 328264 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 22 Jan 2018 20:49:19 -0000 Author: kib Date: Mon Jan 22 20:49:17 2018 New Revision: 328264 URL: https://svnweb.freebsd.org/changeset/base/328264 Log: Fix compat32 for sysctl net.PF_ROUTE...NET_RT_IFLISTL. Route messages are aligned to the host long type alignment, which breaks 32bit. Reported and tested by: lwhsu Diagnosed by: Yuri Pankov Sponsored by: The FreeBSD Foundation MFC after: 1 week Modified: head/sys/net/rtsock.c Modified: head/sys/net/rtsock.c ============================================================================== --- head/sys/net/rtsock.c Mon Jan 22 18:40:19 2018 (r328263) +++ head/sys/net/rtsock.c Mon Jan 22 20:49:17 2018 (r328264) @@ -112,6 +112,12 @@ struct ifa_msghdrl32 { int32_t ifam_metric; struct if_data ifam_data; }; + +#define SA_SIZE32(sa) \ + ( (((struct sockaddr *)(sa))->sa_len == 0) ? \ + sizeof(int) : \ + 1 + ( (((struct sockaddr *)(sa))->sa_len - 1) | (sizeof(int) - 1) ) ) + #endif /* COMPAT_FREEBSD32 */ MALLOC_DEFINE(M_RTABLE, "routetbl", "routing tables"); @@ -1116,6 +1122,9 @@ rtsock_msg_buffer(int type, struct rt_addrinfo *rtinfo struct sockaddr_storage ss; struct sockaddr_in6 *sin6; #endif +#ifdef COMPAT_FREEBSD32 + bool compat32 = false; +#endif switch (type) { @@ -1123,9 +1132,10 @@ rtsock_msg_buffer(int type, struct rt_addrinfo *rtinfo case RTM_NEWADDR: if (w != NULL && w->w_op == NET_RT_IFLISTL) { #ifdef COMPAT_FREEBSD32 - if (w->w_req->flags & SCTL_MASK32) + if (w->w_req->flags & SCTL_MASK32) { len = sizeof(struct ifa_msghdrl32); - else + compat32 = true; + } else #endif len = sizeof(struct ifa_msghdrl); } else @@ -1139,6 +1149,7 @@ rtsock_msg_buffer(int type, struct rt_addrinfo *rtinfo len = sizeof(struct if_msghdrl32); else len = sizeof(struct if_msghdr32); + compat32 = true; break; } #endif @@ -1169,7 +1180,12 @@ rtsock_msg_buffer(int type, struct rt_addrinfo *rtinfo if ((sa = rtinfo->rti_info[i]) == NULL) continue; rtinfo->rti_addrs |= (1 << i); - dlen = SA_SIZE(sa); +#ifdef COMPAT_FREEBSD32 + if (compat32) + dlen = SA_SIZE32(sa); + else +#endif + dlen = SA_SIZE(sa); if (cp != NULL && buflen >= dlen) { #ifdef INET6 if (V_deembed_scopeid && sa->sa_family == AF_INET6) {