From owner-svn-src-stable-12@freebsd.org Tue Aug 27 00:29:30 2019 Return-Path: Delivered-To: svn-src-stable-12@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 CEFD3C167A; Tue, 27 Aug 2019 00:29:30 +0000 (UTC) (envelope-from jhb@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 46HVB259jMz45Sl; Tue, 27 Aug 2019 00:29:30 +0000 (UTC) (envelope-from jhb@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 93499E6A5; Tue, 27 Aug 2019 00:29:30 +0000 (UTC) (envelope-from jhb@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x7R0TUCn068033; Tue, 27 Aug 2019 00:29:30 GMT (envelope-from jhb@FreeBSD.org) Received: (from jhb@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x7R0TUQx068032; Tue, 27 Aug 2019 00:29:30 GMT (envelope-from jhb@FreeBSD.org) Message-Id: <201908270029.x7R0TUQx068032@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: jhb set sender to jhb@FreeBSD.org using -f From: John Baldwin Date: Tue, 27 Aug 2019 00:29:30 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r351523 - in stable: 11/sys/netinet 12/sys/netinet X-SVN-Group: stable-12 X-SVN-Commit-Author: jhb X-SVN-Commit-Paths: in stable: 11/sys/netinet 12/sys/netinet X-SVN-Commit-Revision: 351523 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-stable-12@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: SVN commit messages for only the 12-stable src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 27 Aug 2019 00:29:30 -0000 Author: jhb Date: Tue Aug 27 00:29:30 2019 New Revision: 351523 URL: https://svnweb.freebsd.org/changeset/base/351523 Log: MFC 349474: Reject attempts to register a TCP stack being unloaded. Modified: stable/12/sys/netinet/tcp_subr.c Directory Properties: stable/12/ (props changed) Changes in other areas also in this revision: Modified: stable/11/sys/netinet/tcp_subr.c Directory Properties: stable/11/ (props changed) Modified: stable/12/sys/netinet/tcp_subr.c ============================================================================== --- stable/12/sys/netinet/tcp_subr.c Tue Aug 27 00:01:56 2019 (r351522) +++ stable/12/sys/netinet/tcp_subr.c Tue Aug 27 00:29:30 2019 (r351523) @@ -813,8 +813,12 @@ register_tcp_functions_as_names(struct tcp_function_bl } } + if (blk->tfb_flags & TCP_FUNC_BEING_REMOVED) { + *num_names = 0; + return (EINVAL); + } + refcount_init(&blk->tfb_refcnt, 0); - blk->tfb_flags = 0; blk->tfb_id = atomic_fetchadd_int(&next_tcp_stack_id, 1); for (i = 0; i < *num_names; i++) { n = malloc(sizeof(struct tcp_function), M_TCPFUNCTIONS, wait);