From owner-svn-src-all@freebsd.org Sat Aug 24 18:00:19 2019 Return-Path: Delivered-To: svn-src-all@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 22B70C6010; Sat, 24 Aug 2019 18:00:19 +0000 (UTC) (envelope-from asomers@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 46G5dv06y7z3xb0; Sat, 24 Aug 2019 18:00:19 +0000 (UTC) (envelope-from asomers@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 D9F8A8CF3; Sat, 24 Aug 2019 18:00:18 +0000 (UTC) (envelope-from asomers@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x7OI0IGr014563; Sat, 24 Aug 2019 18:00:18 GMT (envelope-from asomers@FreeBSD.org) Received: (from asomers@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x7OI0I7X014562; Sat, 24 Aug 2019 18:00:18 GMT (envelope-from asomers@FreeBSD.org) Message-Id: <201908241800.x7OI0I7X014562@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: asomers set sender to asomers@FreeBSD.org using -f From: Alan Somers Date: Sat, 24 Aug 2019 18:00:18 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r351461 - head/sbin/ping X-SVN-Group: head X-SVN-Commit-Author: asomers X-SVN-Commit-Paths: head/sbin/ping X-SVN-Commit-Revision: 351461 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: 2.1.29 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: Sat, 24 Aug 2019 18:00:19 -0000 Author: asomers Date: Sat Aug 24 18:00:18 2019 New Revision: 351461 URL: https://svnweb.freebsd.org/changeset/base/351461 Log: ping: fix unaligned access to ancillary data Use CMSG_FIRSTHDR rather than assume that an array is correctly aligned. Fixes warnings on sparc64 and powerpcspe. Submitted by: Ján Sučan MFH: 2 weeks Sponsored by: Google LLC (Google Summer of Code 2019) Differential Revision: https://reviews.freebsd.org/D21406 Modified: head/sbin/ping/ping.c Modified: head/sbin/ping/ping.c ============================================================================== --- head/sbin/ping/ping.c Sat Aug 24 16:44:47 2019 (r351460) +++ head/sbin/ping/ping.c Sat Aug 24 18:00:18 2019 (r351461) @@ -875,6 +875,7 @@ main(int argc, char *const *argv) msg.msg_iovlen = 1; #ifdef SO_TIMESTAMP msg.msg_control = (caddr_t)ctrl; + msg.msg_controllen = sizeof(ctrl); #endif iov.iov_base = packet; iov.iov_len = IP_MAXPACKET; @@ -920,9 +921,7 @@ main(int argc, char *const *argv) if (n == 1) { struct timespec *tv = NULL; #ifdef SO_TIMESTAMP - struct cmsghdr *cmsg = (struct cmsghdr *)&ctrl; - - msg.msg_controllen = sizeof(ctrl); + struct cmsghdr *cmsg = CMSG_FIRSTHDR(&msg); #endif msg.msg_namelen = sizeof(from); if ((cc = recvmsg(srecv, &msg, 0)) < 0) {