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Date:      Wed, 09 Jun 2021 19:48:46 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 256511] UFS assertion failure when shutting down from single-user mode
Message-ID:  <bug-256511-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D256511

            Bug ID: 256511
           Summary: UFS assertion failure when shutting down from
                    single-user mode
           Product: Base System
           Version: CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: bugs@FreeBSD.org
          Reporter: markj@FreeBSD.org

I built a VM image without an fstab.  At the mountroot prompt, I entered the
root partition, and the system dropped into single-user mode (because there=
's
no fstab).  While shutting down, I get:

panic: Assertion ump->um_softdep =3D=3D NULL failed at
/root/freebsd/sys/ufs/ffs/ffs_vfsops.c:1541=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20
cpuid =3D 0=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
time =3D 1623267977=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
KDB: stack backtrace:=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe0008585=
820=20=20
vpanic() at vpanic+0x181/frame 0xfffffe0008585870=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
panic() at panic+0x43/frame 0xfffffe00085858d0=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
ffs_unmount() at ffs_unmount+0x4b5/frame 0xfffffe0008585940=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
dounmount() at dounmount+0x42b/frame 0xfffffe00085859b0=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
vfs_unmountall() at vfs_unmountall+0x6a/frame 0xfffffe00085859e0=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20
bufshutdown() at bufshutdown+0x2ce/frame 0xfffffe0008585a30=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
kern_reboot() at kern_reboot+0x213/frame 0xfffffe0008585a70=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
sys_reboot() at sys_reboot+0x3a6/frame 0xfffffe0008585ac0=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
amd64_syscall() at amd64_syscall+0x12e/frame 0xfffffe0008585bf0=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20
fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe0008585bf0=
=20=20=20=20=20=20
--- syscall (55, FreeBSD ELF64, sys_reboot), rip =3D 0x28c92a, rsp =3D
0x7fffffffe698, rbp =3D 0x7fffffffe780 ---

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