kern/156974: Panic during kernel boot on HP Proliant DL180G6 and 8-STABLE dated may 8, possibly igb related

[Bartosz Stec]

>Number:         156974
>Category:       kern
>Synopsis:       Panic during kernel boot on HP Proliant DL180G6 and  8-STABLE dated may 8, possibly igb related
>Confidential:   no
>Severity:       serious
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu May 12 08:40:07 UTC 2011
>Closed-Date:
>Last-Modified:
>Originator:     Bartosz Stec
>Release:        8-Stable
>Organization:
IT4Pro
>Environment:
8.2-STABLE FreeBSD 8.2-STABLE #2: Sun May  8 15:04:33 CEST 2011 amd64

>Description:
I moved my 8-STABLE system from cheap AMD64 machine to Proliant DL180G6 (full ZFS send -> receive).
Operation was succesfull, system booted and everything worked fine. Still, I wanted to perform full world + kernel rebuild with updated sources and CPUTYPE (core2 instead of athlon64) and with removed unused NIC drivers from kernel.

New kernel panicked during boot. I rebuilt kernel again, without any CPUTYPE in make.conf, but panic was still there. Old kernel (built at 8.04.2011) is booting fine.
First panic line says:

   panic: m_getzone: m_getjcl: invalid cluster type.


I made a poor quality photo of screen with stack backtrace and it's available here: http://i51.tinypic.com/nyuux3.jpg 


Kernel config: http://pastebin.com/G7K0vfuJ

make.conf:

CPUTYPE?=core2
   KERNCONF=PROLIANT
   #MAKEOPTS=-j3
   #WITH_DEBUG=yes
   #DEBUG_FLAGS=-g

   # default build settings for ports collection
   .if ${.CURDIR:M*/ports/*} && !defined(NOCCACHE)
   CFLAGS=-O2 -pipe
   #CXXFLAGS= -O2 -fno-strict-aliasing -pipe -funroll-loops
   BUILD_OPTIMIZED=YES
   WITH_OPENSSL=YES
   WITH_XCHARSET=all
   WITH_CHARSET=utf8
   WITH_COLLATION=utf8_general_ci
   .endif

   # default build settings for base system
   .if ${.CURDIR:M*/usr/src/*} || ${.CURDIR:M*/usr/obj/*} &&
   !defined(NOCCACHE)

   CFLAGS=-O2 -pipe
   COPTFLAGS=-O2 -pipe

   CC:=${CC:C,^cc,/usr/local/libexec/ccache/world/cc,1}
   CXX:=${CXX:C,^c\+\+,/usr/local/libexec/ccache/world/c++,1}

   .endif

   # added by use.perl 2011-05-08 17:13:51
   PERL_VERSION=5.10.1

dmesg: http://pastebin.com/Es0CKD64 
>How-To-Repeat:

>Fix:
Not really a fix, but a funny override whoch works:

Igb driver is compiled into the kernel. If I add igb driver to loader.conf kernel complains of course:

   module_register: module pci/igb already exists!
   Module pci/igb failed to register: 17


but there's no panic!

When I remove 'if_igb_load="YES"' from loader.conf, I experience panic visible above.

>Release-Note:
>Audit-Trail:
>Unformatted: