https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=256511
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: [email protected]
Reporter: [email protected]
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 == NULL failed at
/root/freebsd/sys/ufs/ffs/ffs_vfsops.c:1541
cpuid = 0
time = 1623267977
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe0008585820
vpanic() at vpanic+0x181/frame 0xfffffe0008585870
panic() at panic+0x43/frame 0xfffffe00085858d0
ffs_unmount() at ffs_unmount+0x4b5/frame 0xfffffe0008585940
dounmount() at dounmount+0x42b/frame 0xfffffe00085859b0
vfs_unmountall() at vfs_unmountall+0x6a/frame 0xfffffe00085859e0
bufshutdown() at bufshutdown+0x2ce/frame 0xfffffe0008585a30
kern_reboot() at kern_reboot+0x213/frame 0xfffffe0008585a70
sys_reboot() at sys_reboot+0x3a6/frame 0xfffffe0008585ac0
amd64_syscall() at amd64_syscall+0x12e/frame 0xfffffe0008585bf0
fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe0008585bf0
--- syscall (55, FreeBSD ELF64, sys_reboot), rip = 0x28c92a, rsp =
0x7fffffffe698, rbp = 0x7fffffffe780 ---
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