From owner-freebsd-bugs@freebsd.org Thu Oct 12 09:18:22 2017 Return-Path: Delivered-To: freebsd-bugs@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 8A57BE49350 for ; Thu, 12 Oct 2017 09:18:22 +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 mx1.freebsd.org (Postfix) with ESMTPS id 798086E2EE for ; Thu, 12 Oct 2017 09:18:22 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from bugs.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id v9C9IMe7020399 for ; Thu, 12 Oct 2017 09:18:22 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 222948] LOR Panic in disk access Date: Thu, 12 Oct 2017 09:18:22 +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: 11.1-STABLE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: grarpamp@gmail.com X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: freebsd-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: 2.1.23 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 12 Oct 2017 09:18:22 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D222948 Bug ID: 222948 Summary: LOR Panic in disk access Product: Base System Version: 11.1-STABLE Hardware: amd64 OS: Any Status: New Severity: Affects Some People Priority: --- Component: kern Assignee: freebsd-bugs@FreeBSD.org Reporter: grarpamp@gmail.com Boot the latest amd64 snapshot either 11 or 12, set the dev=3D parameter in= the script to some available da device and run it. Repeats every time. LOR panic is almost identical to http://docs.freebsd.org/cgi/mid.cgi?CAD2Ti2-6W_b04fHen5XHiT-bFQZ9CncZptUbDP= 0yaHbg7gjnUA and was possibly first noted here https://lists.freebsd.org/pipermail/freebsd-stable/2017-June/087291.html #!/bin/sh -- dev=3Dda1 set -x dd if=3D/dev/zero of=3D/dev/${dev} bs=3D1m count=3D64 gpart create -s mbr ${dev} gpart add -t freebsd -a 1m -b 1m -s 64m -i 1 ${dev} gpart create -s bsd ${dev}s1 gpart add -t freebsd-ufs -a 1m -b 1m -s 31m -i 1 ${dev}s1 gpart show -p ${dev} ${dev}s1 newfs /dev/${dev}s1a fsck -fy /dev/${dev}s1a mount -v -o rw /dev/${dev}s1a /mnt sysctl kern.geom.debugflags=3D16 ### this is broken, footshooting should be allowed here # dd: /dev/da0s1: Operation not permitted dd if=3D/dev/zero of=3D/dev/${dev}s1 seek=3D2 count=3D1 bs=3D1m sysctl kern.geom.debugflags=3D0 umount -v /dev/${dev}s1a mount -v -o ro /dev/${dev}s1a /mnt ls /mnt dd if=3D/dev/zero of=3D/dev/${dev}s1 seek=3D34 count=3D1 bs=3D1m ### this is broken # ls: .snap: Device not configured ls -l /mnt ### select mount instead of umount to get the LOR PANIC umount -v /dev/${dev}s1a #mount -uvw /dev/${dev}s1a --=20 You are receiving this mail because: You are the assignee for the bug.=