Date: Thu, 12 Oct 2017 09:18:22 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 222948] LOR Panic in disk access Message-ID: <bug-222948-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=222948 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= 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-bFQZ9CncZptUbDP0yaHbg7gjnUA and was possibly first noted here https://lists.freebsd.org/pipermail/freebsd-stable/2017-June/087291.html #!/bin/sh -- dev=da1 set -x dd if=/dev/zero of=/dev/${dev} bs=1m count=64 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=16 ### this is broken, footshooting should be allowed here # dd: /dev/da0s1: Operation not permitted dd if=/dev/zero of=/dev/${dev}s1 seek=2 count=1 bs=1m sysctl kern.geom.debugflags=0 umount -v /dev/${dev}s1a mount -v -o ro /dev/${dev}s1a /mnt ls /mnt dd if=/dev/zero of=/dev/${dev}s1 seek=34 count=1 bs=1m ### 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 -- You are receiving this mail because: You are the assignee for the bug.
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