From owner-freebsd-java@FreeBSD.ORG Tue Sep 16 14:10:05 2014 Return-Path: <owner-freebsd-java@FreeBSD.ORG> Delivered-To: freebsd-java@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 972CE4D2; Tue, 16 Sep 2014 14:10:05 +0000 (UTC) Received: from citadel.icyb.net.ua (citadel.icyb.net.ua [212.40.38.140]) by mx1.freebsd.org (Postfix) with ESMTP id 28338285; Tue, 16 Sep 2014 14:10:03 +0000 (UTC) Received: from porto.starpoint.kiev.ua (porto-e.starpoint.kiev.ua [212.40.38.100]) by citadel.icyb.net.ua (8.8.8p3/ICyb-2.3exp) with ESMTP id RAA10218; Tue, 16 Sep 2014 17:10:01 +0300 (EEST) (envelope-from avg@FreeBSD.org) Received: from localhost ([127.0.0.1]) by porto.starpoint.kiev.ua with esmtp (Exim 4.34 (FreeBSD)) id 1XTtSD-0004m2-5v; Tue, 16 Sep 2014 17:10:01 +0300 Message-ID: <54184481.3060804@FreeBSD.org> Date: Tue, 16 Sep 2014 17:09:05 +0300 From: Andriy Gapon <avg@FreeBSD.org> User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:31.0) Gecko/20100101 Thunderbird/31.1.0 MIME-Version: 1.0 To: John Baldwin <jhb@FreeBSD.org>, freebsd-java@FreeBSD.org Subject: Re: svn commit: r271635 - in head: lib/libc/sys sys/vm References: <201409151720.s8FHKDFs099885@svn.freebsd.org> <54183D4D.3050907@FreeBSD.org> In-Reply-To: <54183D4D.3050907@FreeBSD.org> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Cc: svn-src-head@FreeBSD.org, svn-src-all@FreeBSD.org, src-committers@FreeBSD.org X-BeenThere: freebsd-java@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Porting Java to FreeBSD <freebsd-java.freebsd.org> List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-java>, <mailto:freebsd-java-request@freebsd.org?subject=unsubscribe> List-Archive: <http://lists.freebsd.org/pipermail/freebsd-java/> List-Post: <mailto:freebsd-java@freebsd.org> List-Help: <mailto:freebsd-java-request@freebsd.org?subject=help> List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-java>, <mailto:freebsd-java-request@freebsd.org?subject=subscribe> X-List-Received-Date: Tue, 16 Sep 2014 14:10:05 -0000 On 16/09/2014 16:38, Andriy Gapon wrote: > On 15/09/2014 20:20, John Baldwin wrote: >> Author: jhb >> Date: Mon Sep 15 17:20:13 2014 >> New Revision: 271635 >> URL: http://svnweb.freebsd.org/changeset/base/271635 >> >> Log: >> Add stricter checking of some mmap() arguments: >> - Fail with EINVAL if an invalid protection mask is passed to mmap(). >> - Fail with EINVAL if an unknown flag is passed to mmap(). >> - Fail with EINVAL if both MAP_PRIVATE and MAP_SHARED are passed to mmap(). >> - Require one of either MAP_PRIVATE or MAP_SHARED for non-anonymous >> mappings. > > This broke Java, at least java/openjdk7, for me: > > 25323 java CALL > mmap(0,0x3000000,0x3<PROT_READ|PROT_WRITE>,0x1042<MAP_PRIVATE|MAP_NORESERVE|MAP_ANON>,0xffffffff,0) > 25323 java RET mmap -1 errno 22 Invalid argument > 25323 java CALL write(0x1,0x7fffffbfd450,0x2b) > 25323 java GIO fd 1 wrote 43 bytes > "Error occurred during initialization of VM > " > 25323 java RET write 43/0x2b > 25323 java CALL write(0x1,0x80209a1e2,0x2d) > 25323 java GIO fd 1 wrote 45 bytes > "Could not reserve enough space for code cache" > > It seems that MAP_NORESERVE presence could be detected in sys/mman.h and then it > is used for some reason. No, it's not auto-detected, it's explicitly used in hotspot/src/os/bsd/vm/os_bsd.cpp. > I guess that the port can be easily fixed, but this commit breaks compatibility > with older binaries. Perhaps MAP_NORESERVE should be removed as well given that > we do not actually implement it. > >> Reviewed by: alc, kib >> MFC after: 2 weeks >> Differential Revision: https://reviews.freebsd.org/D698 >> >> Modified: >> head/lib/libc/sys/mmap.2 >> head/sys/vm/vm_mmap.c -- Andriy Gapon