From owner-freebsd-current@freebsd.org Sat Jul 1 19:47:02 2017 Return-Path: Delivered-To: freebsd-current@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 8F79BD90FD5 for ; Sat, 1 Jul 2017 19:47:02 +0000 (UTC) (envelope-from guyyur@gmail.com) Received: from mail-wr0-x22e.google.com (mail-wr0-x22e.google.com [IPv6:2a00:1450:400c:c0c::22e]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 248376F8AA; Sat, 1 Jul 2017 19:47:02 +0000 (UTC) (envelope-from guyyur@gmail.com) Received: by mail-wr0-x22e.google.com with SMTP id k67so217038456wrc.2; Sat, 01 Jul 2017 12:47:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=q1ID2sfM7rb5h3KEaeoGhzEDtk7DW91j7ilGjKQRsWA=; b=Ok6uQjfGIBauYaGwqyckYF/gpOhOEZ3GyefAvYeXyGOHQ2m7ulBuCJ+iHb75sGZ93V SYUP0FIyICQMkbuEXFschOcy40+tnS30YJlWyrg702pqem7GawFaR7cVIq2YC6I4gSKo F0Vq7zLsJpvVSpsLW66Cp2YARtLNMI46ztEmboFj/wW4kwBfV8YxUCXN70/QniKmR3TU WNUHyb4ItxsanE6ZGMdKOgmxioglU30D+U2zf/2Tas+kRNVEVYnno/LQ9DrHqoMpFq/K 0e4E/Z45g6sSqf6QTgZozNu2bX+OH14H8rEvKdgPZ5jPOFfYOFsCr3Qtvh347PkX1eOz M2Kg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=q1ID2sfM7rb5h3KEaeoGhzEDtk7DW91j7ilGjKQRsWA=; b=TyaV2eV0WerTaguEeCwe1C/P1FpNkmHHbQN0fxhPUwt5yXmGisfzwZ89lFZPMNlL9D 4Pq5DhP8KwlYOaIjBAWv/TvBQUkqyrjVPhU9r8x+EtjR68/34rRSZqOczk1ogne3Jy/4 /hQE0XJ3CEXTreJcUUn3Dlyj19c3WIkPawK+0ckSORXQgtMPKdDffntAm10pr/rX+smg F7iY+KvV94NAEDbuYP26UefCCBgKW+WO8E4ebVpa/MvUXjE8L9mJNWuzoRRhnqf8vluF nCIoNYzNPqrffxhmoQN1hfmXT5NgyCIBcizBbduq1wUT1VDXbkkCKwxA/XGliN1o5rCc 7rcQ== X-Gm-Message-State: AKS2vOzKJQSUJ33jiNpbXaHFDp5MIh+wDfxO292r1w0MOL10NNHVqDx/ 2VqC4K+rnGNGhV4TbJbDzNqNiFndpNS8 X-Received: by 10.223.173.83 with SMTP id p77mr26889909wrc.25.1498938419544; Sat, 01 Jul 2017 12:46:59 -0700 (PDT) MIME-Version: 1.0 Received: by 10.28.164.129 with HTTP; Sat, 1 Jul 2017 12:46:58 -0700 (PDT) From: Guy Yur Date: Sat, 1 Jul 2017 22:46:58 +0300 Message-ID: Subject: running binary in chroot using qemu-arm-static fails to mmap after r320318 To: freebsd-current , kib@freebsd.org, sbruno@freebsd.org Content-Type: text/plain; charset="UTF-8" X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 01 Jul 2017 19:47:02 -0000 Hi, I tried to run armv6 /bin/sh in a chroot on an amd64 host using qemu-arm-static. It failed on invalid argument to mmap. # cp /usr/local/bin/qemu-arm-static /chroots/armv6/root/ # chroot /chroots/armv6 /root/qemu-arm-static /bin/sh /lib/libedit.so.7: mmap of entire address space failed: Invalid argument rtld-elf only passes MAP_GUARD but ktrace shows mmap is called with MAP_FIXED and MAP_ANON too. I think qemu-user-static adds the flags in bsd-user/mmap.c target_mmap(). Does the qemu-user-static port need patching to support MAP_GUARD? ktrace snipet: 1072 qemu-arm-static CALL openat(AT_FDCWD,0xf4ff9020,0x300000) 1072 qemu-arm-static NAMI "/lib/libc.so.7" 1072 qemu-arm-static RET openat 3 1072 qemu-arm-static CALL fstat(0x3,0x7ffffffe9680) 1072 qemu-arm-static STRU struct stat {dev=687931144, ino=192007, mode=0100444, nlink=1, uid=0, gid=0, rdev=1548632, atime=1498921861.605975000, mtime=1498921861.608547000, ctime=1498921861.609724000, birthtime=1498921861.605973000, size=1720888, blksize=32768, blocks=3456, flags=0x20000 } 1072 qemu-arm-static RET fstat 0 1072 qemu-arm-static CALL mmap(0xf4ff7000,0x1000,0x1,0x41012,0xffffffff,0) 1072 qemu-arm-static RET mmap 4110381056/0xf4ff7000 1072 qemu-arm-static CALL mmap(0xf4ff7000,0x1000,0x1,0x40012,0x3,0) 1072 qemu-arm-static RET mmap 4110381056/0xf4ff7000 1072 qemu-arm-static CALL mmap(0xf4e37000,0x1c0000,0,0x3010,0xffffffff,0) 1072 qemu-arm-static RET mmap -1 errno 22 Invalid argument Thanks, Guy