From owner-svn-src-all@freebsd.org  Tue Aug 22 18:15:48 2017
Return-Path: <owner-svn-src-all@freebsd.org>
Delivered-To: svn-src-all@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 99464DD9D4A;
 Tue, 22 Aug 2017 18:15:48 +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 66E706F14C;
 Tue, 22 Aug 2017 18:15:48 +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 v7MIFl1Y033720;
 Tue, 22 Aug 2017 18:15:47 GMT (envelope-from kib@FreeBSD.org)
Received: (from kib@localhost)
 by repo.freebsd.org (8.15.2/8.15.2/Submit) id v7MIFlI2033719;
 Tue, 22 Aug 2017 18:15:47 GMT (envelope-from kib@FreeBSD.org)
Message-Id: <201708221815.v7MIFlI2033719@repo.freebsd.org>
X-Authentication-Warning: repo.freebsd.org: kib set sender to kib@FreeBSD.org
 using -f
From: Konstantin Belousov <kib@FreeBSD.org>
Date: Tue, 22 Aug 2017 18:15:47 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
 svn-src-head@freebsd.org
Subject: svn commit: r322799 - head/sys/amd64/amd64
X-SVN-Group: head
X-SVN-Commit-Author: kib
X-SVN-Commit-Paths: head/sys/amd64/amd64
X-SVN-Commit-Revision: 322799
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: 2.1.23
Precedence: list
List-Id: "SVN commit messages for the entire src tree \(except for &quot;
 user&quot; and &quot; projects&quot; \)" <svn-src-all.freebsd.org>
List-Unsubscribe: <https://lists.freebsd.org/mailman/options/svn-src-all>,
 <mailto:svn-src-all-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-all/>
List-Post: <mailto:svn-src-all@freebsd.org>
List-Help: <mailto:svn-src-all-request@freebsd.org?subject=help>
List-Subscribe: <https://lists.freebsd.org/mailman/listinfo/svn-src-all>,
 <mailto:svn-src-all-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 22 Aug 2017 18:15:48 -0000

Author: kib
Date: Tue Aug 22 18:15:47 2017
New Revision: 322799
URL: https://svnweb.freebsd.org/changeset/base/322799

Log:
  Ensure that fs/gs bases are stored in pcb before copying the pcb for
  new process or thread.
  
  Reported and tested by:	ae, dhw
  Sponsored by:	The FreeBSD Foundation
  MFC after:	20 days

Modified:
  head/sys/amd64/amd64/vm_machdep.c

Modified: head/sys/amd64/amd64/vm_machdep.c
==============================================================================
--- head/sys/amd64/amd64/vm_machdep.c	Tue Aug 22 17:57:34 2017	(r322798)
+++ head/sys/amd64/amd64/vm_machdep.c	Tue Aug 22 18:15:47 2017	(r322799)
@@ -172,6 +172,7 @@ cpu_fork(struct thread *td1, struct proc *p2, struct t
 
 	/* Ensure that td1's pcb is up to date. */
 	fpuexit(td1);
+	update_pcb_bases(td1->td_pcb);
 
 	/* Point the pcb to the top of the stack */
 	pcb2 = get_pcb_td(td2);
@@ -433,6 +434,7 @@ cpu_copy_thread(struct thread *td, struct thread *td0)
 	 * Those not loaded individually below get their default
 	 * values here.
 	 */
+	update_pcb_bases(td0->td_pcb);
 	bcopy(td0->td_pcb, pcb2, sizeof(*pcb2));
 	clear_pcb_flags(pcb2, PCB_FPUINITDONE | PCB_USERFPUINITDONE |
 	    PCB_KERNFPU);