From owner-svn-src-stable@freebsd.org Thu Nov 7 00:28:50 2019 Return-Path: Delivered-To: svn-src-stable@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 C281617DDFB; Thu, 7 Nov 2019 00:28:50 +0000 (UTC) (envelope-from glebius@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 477km24lQcz3MBQ; Thu, 7 Nov 2019 00:28:50 +0000 (UTC) (envelope-from glebius@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 860BF56B1; Thu, 7 Nov 2019 00:28:50 +0000 (UTC) (envelope-from glebius@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id xA70SoSG023940; Thu, 7 Nov 2019 00:28:50 GMT (envelope-from glebius@FreeBSD.org) Received: (from glebius@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id xA70So0i023939; Thu, 7 Nov 2019 00:28:50 GMT (envelope-from glebius@FreeBSD.org) Message-Id: <201911070028.xA70So0i023939@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: glebius set sender to glebius@FreeBSD.org using -f From: Gleb Smirnoff Date: Thu, 7 Nov 2019 00:28:50 +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: r354424 - stable/12/sys/netgraph X-SVN-Group: stable-12 X-SVN-Commit-Author: glebius X-SVN-Commit-Paths: stable/12/sys/netgraph X-SVN-Commit-Revision: 354424 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@freebsd.org X-Mailman-Version: 2.1.29 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: Thu, 07 Nov 2019 00:28:50 -0000 Author: glebius Date: Thu Nov 7 00:28:50 2019 New Revision: 354424 URL: https://svnweb.freebsd.org/changeset/base/354424 Log: Merge r353027: Protect access to seq->xwin[] with the seq mutex. Modified: stable/12/sys/netgraph/ng_l2tp.c Modified: stable/12/sys/netgraph/ng_l2tp.c ============================================================================== --- stable/12/sys/netgraph/ng_l2tp.c Thu Nov 7 00:27:23 2019 (r354423) +++ stable/12/sys/netgraph/ng_l2tp.c Thu Nov 7 00:28:50 2019 (r354424) @@ -1462,6 +1462,7 @@ ng_l2tp_seq_rack_timeout(node_p node, hook_p hook, voi /* Sanity check */ L2TP_SEQ_CHECK(seq); + mtx_lock(&seq->mtx); priv->stats.xmitRetransmits++; /* Have we reached the retransmit limit? If so, notify owner. */ @@ -1482,7 +1483,9 @@ ng_l2tp_seq_rack_timeout(node_p node, hook_p hook, voi seq->acks = 0; /* Retransmit oldest unack'd packet */ - if ((m = L2TP_COPY_MBUF(seq->xwin[0], M_NOWAIT)) == NULL) + m = L2TP_COPY_MBUF(seq->xwin[0], M_NOWAIT); + mtx_unlock(&seq->mtx); + if (m == NULL) priv->stats.memoryFailures++; else ng_l2tp_xmit_ctrl(priv, m, seq->ns++);