From owner-svn-src-all@freebsd.org Thu May 7 03:22:58 2020 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 79BDA2EAC15; Thu, 7 May 2020 03:22:58 +0000 (UTC) (envelope-from tuexen@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 49Hf0y2jv5z4jhr; Thu, 7 May 2020 03:22:58 +0000 (UTC) (envelope-from tuexen@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 5779AA4C5; Thu, 7 May 2020 03:22:58 +0000 (UTC) (envelope-from tuexen@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id 0473MwMs033320; Thu, 7 May 2020 03:22:58 GMT (envelope-from tuexen@FreeBSD.org) Received: (from tuexen@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id 0473Mwm0033319; Thu, 7 May 2020 03:22:58 GMT (envelope-from tuexen@FreeBSD.org) Message-Id: <202005070322.0473Mwm0033319@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: tuexen set sender to tuexen@FreeBSD.org using -f From: Michael Tuexen Date: Thu, 7 May 2020 03:22:58 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r360765 - stable/11/sys/netinet X-SVN-Group: stable-11 X-SVN-Commit-Author: tuexen X-SVN-Commit-Paths: stable/11/sys/netinet X-SVN-Commit-Revision: 360765 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: 2.1.30 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: Thu, 07 May 2020 03:22:58 -0000 Author: tuexen Date: Thu May 7 03:22:57 2020 New Revision: 360765 URL: https://svnweb.freebsd.org/changeset/base/360765 Log: MFC r358023: Don't use uninitialized memory Don't use uninitialised stack memory if the sysctl variable net.inet.tcp.hostcache.enable is set to 0. The bug resulted in using possibly a too small MSS value or wrong initial retransmission timer settings. Possibly the value used for ssthresh was also wrong. Submitted by: rscheff Reviewed by: Cheng Cui, rgrimes@, tuexen@ Differential Revision: https://reviews.freebsd.org/D23687 Modified: stable/11/sys/netinet/tcp_hostcache.c Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/netinet/tcp_hostcache.c ============================================================================== --- stable/11/sys/netinet/tcp_hostcache.c Thu May 7 03:20:01 2020 (r360764) +++ stable/11/sys/netinet/tcp_hostcache.c Thu May 7 03:22:57 2020 (r360765) @@ -435,8 +435,10 @@ tcp_hc_get(struct in_conninfo *inc, struct hc_metrics_ { struct hc_metrics *hc_entry; - if (!V_tcp_use_hostcache) + if (!V_tcp_use_hostcache) { + bzero(hc_metrics_lite, sizeof(*hc_metrics_lite)); return; + } /* * Find the right bucket.