From owner-svn-src-stable@freebsd.org Sat Apr 1 08:40:48 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 F0913D23D9E; Sat, 1 Apr 2017 08:40:48 +0000 (UTC) (envelope-from kib@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 C24C4B0D; Sat, 1 Apr 2017 08:40:48 +0000 (UTC) (envelope-from kib@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id v318elGv038422; Sat, 1 Apr 2017 08:40:47 GMT (envelope-from kib@FreeBSD.org) Received: (from kib@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id v318elXx038421; Sat, 1 Apr 2017 08:40:47 GMT (envelope-from kib@FreeBSD.org) Message-Id: <201704010840.v318elXx038421@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: kib set sender to kib@FreeBSD.org using -f From: Konstantin Belousov Date: Sat, 1 Apr 2017 08:40:47 +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: r316346 - stable/11/sys/x86/iommu X-SVN-Group: stable-11 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: Sat, 01 Apr 2017 08:40:49 -0000 Author: kib Date: Sat Apr 1 08:40:47 2017 New Revision: 316346 URL: https://svnweb.freebsd.org/changeset/base/316346 Log: MFC r315934: Avoid leaking allocated but unused context after creation race. Modified: stable/11/sys/x86/iommu/intel_ctx.c Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/x86/iommu/intel_ctx.c ============================================================================== --- stable/11/sys/x86/iommu/intel_ctx.c Sat Apr 1 08:37:19 2017 (r316345) +++ stable/11/sys/x86/iommu/intel_ctx.c Sat Apr 1 08:40:47 2017 (r316346) @@ -472,13 +472,15 @@ dmar_get_ctx_for_dev(struct dmar_unit *d dmar->unit, dmar->segment, bus, slot, func, rid, domain->domain, domain->mgaw, domain->agaw, id_mapped ? "id" : "re"); + dmar_unmap_pgtbl(sf); } else { - /* Nothing needs to be done to destroy ctx1. */ + dmar_unmap_pgtbl(sf); dmar_domain_destroy(domain1); + /* Nothing needs to be done to destroy ctx1. */ + free(ctx1, M_DMAR_CTX); domain = ctx->domain; ctx->refs++; /* tag referenced us */ } - dmar_unmap_pgtbl(sf); } else { domain = ctx->domain; ctx->refs++; /* tag referenced us */