> r353680: multiuser crash due to: m_getzone: Inavlid cluster size 0

The last known good update of CURRENT on a Fujitsu Primergy RX2530-M5 (only one
of two sockets equipted, 64 GB RAM) was October, 17th, 2019 before 15 o'clock,
I suppose that was r353680 that time. Today's update to r353881 resulted in an
immediate crash when the network (igb0-igb3, two built-in i350 NICs and two
i350 NICs placed on a i350-T2 server adapter) comes up, just when rc scripts
configure the NIC's.

Last message I see is something like m_getzone: Inavlid cluster size 0 and
"dubugnet" or similar. Since the crash wrecked the installation (it seems after
updating, the UFS filesystem received, as so often, inconsistencies, so I can
not start vi or other applications after a full fsck -yf on all partitons,
those programs fail with some serious trap, stating that ELF is corrupt, I
can't remember the exact message). We do not have debugging facilities enabled
on that kernel suite, so I can not provide more proper informations.

For emergency rescue we downloaded the latest CURRENT memstick image,
FreeBSD-13.0-CURRENT-amd64-20191018-r353709-memstick.img dated Oct., 18th, which
also shows the bug described above.

It seems that I have to go back to memimage
FreeBSD-13.0-CURRENT-amd64-20191011-r353427-memstick.img which dates to 11th
October 2019.
Since the crash resulted in a serious damage of the base filesystem and the
installation, I need to copy first the installation tarballs from the install
memstick into place and try then to rebuild the system with sources up to the
version which is deemed working. The I'll report, hopefully, more information.

Kind regards,
oh

Addendum:

r353680 works
r353709 doesn't work


[...]
/etc # more /var/crash/info.last
Dump header from device: /dev/da0p2
  Architecture: amd64
  Architecture Version: 2
  Dump Length: 2952835072
  Blocksize: 512
  Compression: none
  Dumptime: Tue Oct 22 12:13:19 2019
  Hostname: wotan.lan101.bundesimmobilien.intern
  Magic: FreeBSD Kernel Dump
  Version String: FreeBSD 13.0-CURRENT #11 r353877: Tue Oct 22 11:02:32 CEST
2019 root_at_:/usr/obj/usr/src/amd64.amd64/sys/WOTAN
  Panic String: m_getzone: invalid cluster size 0
  Dump Parity: 2027469319
  Bounds: 0
  Dump Status: good
[...]

[...]

 # more /var/crash/core.txt.0
/dev/stdin:1: Error in sourced command file:
Cannot access memory at address 0x65657246
/dev/stdin:1: Error in sourced command file:
Cannot access memory at address 0x65657246
/dev/stdin:1: Error in sourced command file:
Cannot access memory at address 0x65657246
/dev/stdin:1: Error in sourced command file:
Cannot access memory at address 0x65657246
/dev/stdin:1: Error in sourced command file:
Cannot access memory at address 0x65657246


[...]


[...]
---<<BOOT>>---
Copyright (c) 1992-2019 The FreeBSD Project.
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        The Regents of the University of California. All rights reserved.
FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 13.0-CURRENT #14 r353680: Wed Oct 23 08:50:04 CEST 2019
    root_at_wotan.lan101.bundesimmobilien.intern:/usr/obj/usr/src/amd64.amd64/sys/WOTAN
amd64 FreeBSD clang version 9.0.0 (tags/RELEASE_900/final 372316) (based on
LLVM 9.0.0) VT(efifb): resolution 1280x1024
CPU microcode: no matching update found
CPU: Intel(R) Xeon(R) Gold 5217 CPU _at_ 3.00GHz (2993.05-MHz K8-class CPU)
  Origin="GenuineIntel"  Id=0x50657  Family=0x6  Model=0x55  Stepping=7
  Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
  Features2=0x7ffefbff<SSE3,PCLMULQDQ,DTES64,MON,DS_CPL,VMX,SMX,EST,TM2,SSSE3,SDBG,FMA,CX16,xTPR,PDCM,PCID,DCA,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,TSCDLT,AESNI,XSAVE,OSXSAVE,AVX,F16C,RDRAND>
  AMD Features=0x2c100800<SYSCALL,NX,Page1GB,RDTSCP,LM>
  AMD Features2=0x121<LAHF,ABM,Prefetch>
  Structured Extended
Features=0xd39ffffb<FSGSBASE,TSCADJ,BMI1,HLE,AVX2,FDPEXC,SMEP,BMI2,ERMS,INVPCID,RTM,PQM,NFPUSG,MPX,PQE,AVX512F,AVX512DQ,RDSEED,ADX,SMAP,CLFLUSHOPT,CLWB,PROCTRACE,AVX512CD,AVX512BW,AVX512VL>
Structured Extended Features2=0x808<PKU,AVX512VNNI> Structured Extended
Features3=0xbc000400<MD_CLEAR,IBPB,STIBP,L1DFL,ARCH_CAP,SSBD> XSAVE
Features=0xf<XSAVEOPT,XSAVEC,XINUSE,XSAVES>
IA32_ARCH_CAPS=0x2b<RDCL_NO,IBRS_ALL,SKIP_L1DFL_VME> VT-x:
PAT,HLT,MTF,PAUSE,EPT,UG,VPID,VID,PostIntr TSC: P-state invariant, performance
statistics real memory  = 68719476736 (65536 MB)
avail memory = 66361274368 (63287 MB)
Event timer "LAPIC" quality 600
ACPI APIC Table: <FUJ    D3383-B1>
FreeBSD/SMP: Multiprocessor System Detected: 16 CPUs
FreeBSD/SMP: 1 package(s) x 8 core(s) x 2 hardware threads
random: registering fast source Intel Secure Key RNG
random: fast provider: "Intel Secure Key RNG"
random: unblocking device.
Security policy loaded: MAC/ntpd (mac_ntpd)
ioapic0 <Version 2.0> irqs 0-23
ioapic1 <Version 2.0> irqs 24-31
ioapic2 <Version 2.0> irqs 32-39
ioapic3 <Version 2.0> irqs 40-47
ioapic4 <Version 2.0> irqs 48-55
Launching APs: 1 13 5 12 9 14 8 7 10 6 11 15 3 4 2
Timecounter "TSC-low" frequency 1496523352 Hz quality 1000
random: entropy device external interface
kbd0 at kbdmux0
[...]