From owner-svn-src-stable@freebsd.org Mon Mar 20 03:06:42 2017 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 912DCD1493E; Mon, 20 Mar 2017 03:06:42 +0000 (UTC) (envelope-from ngie@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 509F9AEC; Mon, 20 Mar 2017 03:06:42 +0000 (UTC) (envelope-from ngie@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id v2K36f2J079406; Mon, 20 Mar 2017 03:06:41 GMT (envelope-from ngie@FreeBSD.org) Received: (from ngie@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id v2K36fcn079404; Mon, 20 Mar 2017 03:06:41 GMT (envelope-from ngie@FreeBSD.org) Message-Id: <201703200306.v2K36fcn079404@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: ngie set sender to ngie@FreeBSD.org using -f From: Ngie Cooper Date: Mon, 20 Mar 2017 03:06:41 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-10@freebsd.org Subject: svn commit: r315610 - in stable/10/sbin/dhclient: . tests X-SVN-Group: stable-10 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: 2.1.23 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, 20 Mar 2017 03:06:42 -0000 Author: ngie Date: Mon Mar 20 03:06:41 2017 New Revision: 315610 URL: https://svnweb.freebsd.org/changeset/base/315610 Log: MFC r315199,r315200,r315203: r315199: sbin/dhclient: fix a memory leak in parse_client_lease_statement(..) The memory stored by `lease` would have previously been leaked if an unterminated lease declaration was found in an early-return code path. CID: 1007114 r315200: Fix -Wunused-but-set-warning with `ret` While here, resolve Coverity warnings by demonstrating that vfprintf's return value is being explicitly ignored. Tested with: clang, gcc 4.2.1, gcc 6.3.0 r315203: sbin/dhclient: fix `vendor` storage leak in parse_option_decl(..) This ensures the storage isn't leaked when non-NULL and the function returns early, prior to the `free(vendor)` later on in the function. CID: 1007111-1007113 Modified: stable/10/sbin/dhclient/clparse.c stable/10/sbin/dhclient/tests/fake.c Directory Properties: stable/10/ (props changed) Modified: stable/10/sbin/dhclient/clparse.c ============================================================================== --- stable/10/sbin/dhclient/clparse.c Mon Mar 20 03:06:37 2017 (r315609) +++ stable/10/sbin/dhclient/clparse.c Mon Mar 20 03:06:41 2017 (r315610) @@ -510,6 +510,7 @@ parse_client_lease_statement(FILE *cfile token = peek_token(&val, cfile); if (token == EOF) { parse_warn("unterminated lease declaration."); + free_client_lease(lease); return; } if (token == RBRACE) @@ -711,6 +712,7 @@ parse_option_decl(FILE *cfile, struct op parse_warn("expecting identifier after '.'"); if (token != SEMI) skip_to_semi(cfile); + free(vendor); return (NULL); } @@ -723,6 +725,7 @@ parse_option_decl(FILE *cfile, struct op if (!universe) { parse_warn("no vendor named %s.", vendor); skip_to_semi(cfile); + free(vendor); return (NULL); } } else { @@ -744,6 +747,7 @@ parse_option_decl(FILE *cfile, struct op parse_warn("no option named %s for vendor %s", val, vendor); skip_to_semi(cfile); + free(vendor); return (NULL); } Modified: stable/10/sbin/dhclient/tests/fake.c ============================================================================== --- stable/10/sbin/dhclient/tests/fake.c Mon Mar 20 03:06:37 2017 (r315609) +++ stable/10/sbin/dhclient/tests/fake.c Mon Mar 20 03:06:41 2017 (r315610) @@ -14,7 +14,7 @@ error(char *fmt, ...) va_list ap; va_start(ap, fmt); - vfprintf(stderr, fmt, ap); + (void)vfprintf(stderr, fmt, ap); va_end(ap); fprintf(stderr, "\n"); @@ -24,11 +24,10 @@ error(char *fmt, ...) int warning(char *fmt, ...) { - int ret; va_list ap; va_start(ap, fmt); - ret = vfprintf(stderr, fmt, ap); + (void)vfprintf(stderr, fmt, ap); va_end(ap); fprintf(stderr, "\n");