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Mon, 18 Sep 2023 17:45:01 -0400 Subject: bug#66053: Childhurd fails to run inside =?UTF-8?Q?=E2=80=98guix?= system =?UTF-8?Q?vm=E2=80=99?= Resent-From: Ludovic =?UTF-8?Q?Court=C3=A8s?= Original-Sender: "Debbugs-submit" Resent-To: bug-guix@gnu.org Resent-Date: Mon, 18 Sep 2023 21:45:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: cc-closed 66053 X-GNU-PR-Package: guix X-GNU-PR-Keywords: To: 66053-done@debbugs.gnu.org Cc: Janneke Nieuwenhuizen Mail-Followup-To: 66053@debbugs.gnu.org, ludo@gnu.org, ludovic.courtes@inria.fr Received: via spool by 66053-done@debbugs.gnu.org id=D66053.169507347410813 (code D ref 66053); Mon, 18 Sep 2023 21:45:01 +0000 Received: (at 66053-done) by debbugs.gnu.org; 18 Sep 2023 21:44:34 +0000 Received: from localhost ([127.0.0.1]:54844 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1qiM2k-0002oL-Fg for submit@debbugs.gnu.org; Mon, 18 Sep 2023 17:44:34 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:48844) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1qiM2f-0002o3-R5 for 66053-done@debbugs.gnu.org; Mon, 18 Sep 2023 17:44:33 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qiM2R-0004qC-Le; Mon, 18 Sep 2023 17:44:15 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=MIME-Version:In-Reply-To:Date:References:Subject:To: From; bh=/foAcclLEN1ARCKubeNn2Rt7KiYqc+fcXzlcCRdwpjs=; b=XUs46RHjHjqYsPm2fFHQ o68IKFpAxd7pn5CEujK0xQJetdH6dVMs+2ZE9Kc2smW+qOLxzTfidRZxzdqCkOu359FtUEr4pYySt a3JTASY+z8XaNpgYpQImLJGHR7M1y4voXGQAsPuGdjCU2taMye7uWdjLwesITCyuu6mx1sy3lHwuF Nmc0jNWFnX6oS6Sy4dixkAol6sRJdeI6pLs5CY/y7rd38KK2+AlzFVMhYC+4LZWQ09G0TAzmxrO+C VR+f8j78PhkaFHLl/Js2I3vjhaM1QvUdAgPV6QObn2EekwoOgne8YmClUJS7k/ZHW+75oBeAgFgUn jl/O5BK5cu0MSg==; From: Ludovic =?UTF-8?Q?Court=C3=A8s?= References: <87sf7cx1tu.fsf@inria.fr> Date: Mon, 18 Sep 2023 23:44:13 +0200 In-Reply-To: <87sf7cx1tu.fsf@inria.fr> ("Ludovic =?UTF-8?Q?Court=C3=A8s?="'s message of "Sun, 17 Sep 2023 17:21:33 +0200") Message-ID: <87y1h3f976.fsf@gnu.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.2 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-guix@gnu.org List-Id: Bug reports for GNU Guix List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-guix-bounces+larch=yhetil.org@gnu.org Sender: bug-guix-bounces+larch=yhetil.org@gnu.org X-Migadu-Flow: FLOW_IN X-Migadu-Country: US X-Migadu-Spam-Score: -2.45 X-Spam-Score: -2.45 X-Migadu-Queue-Id: E3D5750013 X-Migadu-Scanner: mx0.migadu.com X-TUID: 6HCQGCu/+iOF Ludovic Court=C3=A8s skribis: > When I run it by hand with KVM on my bare-metal GNU/Linux machine, it=E2= =80=99s > all good: =F0=9F=91=8D > > $ "/gnu/store/1rg1fb9mj65rh82467vwlrkmi12p4v89-qemu-minimal-8.1.0/bin/qem= u-system-i386" "-m" 2048 "--device" "rtl8139,netdev=3Dnet0" "--netdev" "use= r,id=3Dnet0,hostfwd=3Dtcp:127.0.0.1:11004-:1004,hostfwd=3Dtcp:127.0.0.1:100= 22-:2222,hostfwd=3Dtcp:127.0.0.1:15900-:5900" "--snapshot" "--hda" "/gnu/st= ore/iqacww23byvw9c5ssja9fkx6m4s057b0-disk-image" "--no-reboot" --enable-kvm > VNC server running on 127.0.0.1:5900 > > > However, the same thing *without* KVM (as happens within =E2=80=98guix sy= stem > vm=E2=80=99) reproduces the =E2=80=9CBad ram pointer=E2=80=9D issue: > > $ "/gnu/store/1rg1fb9mj65rh82467vwlrkmi12p4v89-qemu-minimal-8.1.0/bin/qem= u-system-i386" "-m" 2048 "--device" "rtl8139,netdev=3Dnet0" "--netdev" "use= r,id=3Dnet0,hostfwd=3Dtcp:127.0.0.1:11004-:1004,hostfwd=3Dtcp:127.0.0.1:100= 22-:2222,hostfwd=3Dtcp:127.0.0.1:15900-:5900" "--snapshot" "--hda" "/gnu/st= ore/iqacww23byvw9c5ssja9fkx6m4s057b0-disk-image" "--no-reboot"=20 > VNC server running on 127.0.0.1:5900 > qemu-system-i386: Bad ram pointer 0x7fa930e0001e > Aborted > > > Good news: I found a workaround! Just use the x86_64 emulator: Done in 5e0ae2684615b6d10751390420e7db296785112b! Ludo=E2=80=99.