From owner-svn-src-stable@FreeBSD.ORG Wed Apr 14 15:22:59 2010 Return-Path: Delivered-To: svn-src-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 27B741065670; Wed, 14 Apr 2010 15:22:59 +0000 (UTC) (envelope-from jhb@FreeBSD.org) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:4f8:fff6::2c]) by mx1.freebsd.org (Postfix) with ESMTP id F10FC8FC0A; Wed, 14 Apr 2010 15:22:58 +0000 (UTC) Received: from svn.freebsd.org (localhost [127.0.0.1]) by svn.freebsd.org (8.14.3/8.14.3) with ESMTP id o3EFMwgh009935; Wed, 14 Apr 2010 15:22:58 GMT (envelope-from jhb@svn.freebsd.org) Received: (from jhb@localhost) by svn.freebsd.org (8.14.3/8.14.3/Submit) id o3EFMwdj009932; Wed, 14 Apr 2010 15:22:58 GMT (envelope-from jhb@svn.freebsd.org) Message-Id: <201004141522.o3EFMwdj009932@svn.freebsd.org> From: John Baldwin Date: Wed, 14 Apr 2010 15:22:58 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-8@freebsd.org X-SVN-Group: stable-8 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Cc: Subject: svn commit: r206602 - in stable/8: lib/libc/sys sys/vm X-BeenThere: svn-src-stable@freebsd.org X-Mailman-Version: 2.1.5 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: Wed, 14 Apr 2010 15:22:59 -0000 Author: jhb Date: Wed Apr 14 15:22:58 2010 New Revision: 206602 URL: http://svn.freebsd.org/changeset/base/206602 Log: MFC 205536: Reject attempts to create a MAP_ANON mapping with a non-zero offset. Modified: stable/8/lib/libc/sys/mmap.2 stable/8/sys/vm/vm_mmap.c Directory Properties: stable/8/lib/libc/ (props changed) stable/8/lib/libc/stdtime/ (props changed) stable/8/sys/ (props changed) stable/8/sys/amd64/include/xen/ (props changed) stable/8/sys/cddl/contrib/opensolaris/ (props changed) stable/8/sys/contrib/dev/acpica/ (props changed) stable/8/sys/contrib/pf/ (props changed) stable/8/sys/dev/xen/xenpci/ (props changed) Modified: stable/8/lib/libc/sys/mmap.2 ============================================================================== --- stable/8/lib/libc/sys/mmap.2 Wed Apr 14 15:20:30 2010 (r206601) +++ stable/8/lib/libc/sys/mmap.2 Wed Apr 14 15:22:58 2010 (r206602) @@ -105,7 +105,7 @@ The file descriptor used for creating must be \-1. The .Fa offset -argument is ignored. +argument must be 0. .\".It Dv MAP_FILE .\"Mapped from a regular file or character-special device memory. .It Dv MAP_FIXED @@ -312,6 +312,11 @@ was equal to zero. was specified and the .Fa fd argument was not -1. +.It Bq Er EINVAL +.Dv MAP_ANON +was specified and the +.Fa offset +argument was not 0. .It Bq Er ENODEV .Dv MAP_ANON has not been specified and Modified: stable/8/sys/vm/vm_mmap.c ============================================================================== --- stable/8/sys/vm/vm_mmap.c Wed Apr 14 15:20:30 2010 (r206601) +++ stable/8/sys/vm/vm_mmap.c Wed Apr 14 15:22:58 2010 (r206602) @@ -232,7 +232,7 @@ mmap(td, uap) /* make sure mapping fits into numeric range etc */ if ((uap->len == 0 && !SV_CURPROC_FLAG(SV_AOUT) && curproc->p_osrel >= 800104) || - ((flags & MAP_ANON) && uap->fd != -1)) + ((flags & MAP_ANON) && (uap->fd != -1 || pos != 0))) return (EINVAL); if (flags & MAP_STACK) { @@ -298,7 +298,6 @@ mmap(td, uap) handle = NULL; handle_type = OBJT_DEFAULT; maxprot = VM_PROT_ALL; - pos = 0; } else { /* * Mapping file, get fp for validation and