From owner-freebsd-bugs@freebsd.org Sun Apr 21 16:06:28 2019 Return-Path: Delivered-To: freebsd-bugs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 61A381590711 for ; Sun, 21 Apr 2019 16:06:28 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.ysv.freebsd.org (mailman.ysv.freebsd.org [IPv6:2001:1900:2254:206a::50:5]) by mx1.freebsd.org (Postfix) with ESMTP id D9C7E769F2 for ; Sun, 21 Apr 2019 16:06:27 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.ysv.freebsd.org (Postfix) id 9D729159070F; Sun, 21 Apr 2019 16:06:27 +0000 (UTC) Delivered-To: bugs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 7B24E159070E for ; Sun, 21 Apr 2019 16:06:27 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.ysv.freebsd.org (mxrelay.ysv.freebsd.org [IPv6:2001:1900:2254:206a::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.ysv.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 1A5D9769EF for ; Sun, 21 Apr 2019 16:06:27 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.ysv.freebsd.org (Postfix) with ESMTPS id 6A52C1427E for ; Sun, 21 Apr 2019 16:06:26 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id x3LG6QsK035547 for ; Sun, 21 Apr 2019 16:06:26 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id x3LG6QMW035546 for bugs@FreeBSD.org; Sun, 21 Apr 2019 16:06:26 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 237441] Virtio net consistently truncates last byte of a fetch xfer with > 8956 bytes of payload Date: Sun, 21 Apr 2019 16:06:25 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 12.0-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: bugmenot@mailinator.com X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 21 Apr 2019 16:06:28 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D237441 Bug ID: 237441 Summary: Virtio net consistently truncates last byte of a fetch xfer with > 8956 bytes of payload Product: Base System Version: 12.0-RELEASE Hardware: amd64 OS: Any Status: New Severity: Affects Some People Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: bugmenot@mailinator.com Reading 215737 carefully, I couldn't decide if this was the same problem but ultimately decided it wasn't. Environment: OSX High Sierra running QEMU and the 12.0 release qcow2 image published on the FreeBSD site. Qemu command line: qemu-system-x86_64 -m 2048 -hda FreeBSD-12.0-RELEASE-amd64.qcow2 -netdev user,id=3Dmynet0,hostfwd=3Dtcp:127.0.0.1:7722-:22 -device virtio-net-pci,netdev=3Dmynet0 Trying to install pkg fails. If you do the following command: fetch http://pkg.freebsd.org/FreeBSD:12:amd64/latest/Latest/pkg.txz you will consistently get the following (Note: with or without [TR]XCSUM enabled): fetch: pkg.txz appears to be truncated: 3395051/3395052 bytes If you download the full package and use dd to grab all but the last byte, = the SHA256 sums match so the data's not corrupted, just missing the final byte = (a 'Z') character. Furthermore, if you run tcpdump in the guest against the vtnet0 interface while it's transferring you can see the final 'Z' byte in = the final packet so qemu is getting the data to the guest. If you then ktrace = the fetch process, you'll see that its final read *doesn't* have the 'Z' which rules out a bug in fetch/libfetch. Using fetch to test for sizing, I started downloading packages at the jumbo frame boundary and found that packages <=3D 8956 bytes work and >=3D 8960 e= xhibit the failure. --=20 You are receiving this mail because: You are the assignee for the bug.=