From owner-svn-src-head@freebsd.org Sun Sep 25 18:29:04 2016 Return-Path: Delivered-To: svn-src-head@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 20F8CBE9104; Sun, 25 Sep 2016 18:29:04 +0000 (UTC) (envelope-from tijl@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 E573C231; Sun, 25 Sep 2016 18:29:03 +0000 (UTC) (envelope-from tijl@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id u8PIT3iI046703; Sun, 25 Sep 2016 18:29:03 GMT (envelope-from tijl@FreeBSD.org) Received: (from tijl@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id u8PIT33V046702; Sun, 25 Sep 2016 18:29:03 GMT (envelope-from tijl@FreeBSD.org) Message-Id: <201609251829.u8PIT33V046702@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: tijl set sender to tijl@FreeBSD.org using -f From: Tijl Coosemans Date: Sun, 25 Sep 2016 18:29:03 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r306318 - head/sys/i386/i386 X-SVN-Group: head MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 25 Sep 2016 18:29:04 -0000 Author: tijl Date: Sun Sep 25 18:29:02 2016 New Revision: 306318 URL: https://svnweb.freebsd.org/changeset/base/306318 Log: MFamd64: r266901 Allocate a zeroed LDT. Failing to do this might result in the LDT appearing to run out of free descriptors because of random junk in the descriptor's 'sd_type' field. http://lists.freebsd.org/pipermail/freebsd-amd64/2014-May/016088.html PR: 212639 Submitted by: wheelcomplex@gmail.com MFC after: 2 weeks Modified: head/sys/i386/i386/sys_machdep.c Modified: head/sys/i386/i386/sys_machdep.c ============================================================================== --- head/sys/i386/i386/sys_machdep.c Sun Sep 25 17:58:55 2016 (r306317) +++ head/sys/i386/i386/sys_machdep.c Sun Sep 25 18:29:02 2016 (r306318) @@ -438,7 +438,7 @@ user_ldt_alloc(struct mdproc *mdp, int l new_ldt->ldt_len = len = NEW_MAX_LD(len); new_ldt->ldt_base = (caddr_t)kmem_malloc(kernel_arena, - len * sizeof(union descriptor), M_WAITOK); + len * sizeof(union descriptor), M_WAITOK | M_ZERO); new_ldt->ldt_refcnt = 1; new_ldt->ldt_active = 0;