[Bug 191468] New: options VIMAGE - kernel panic, crashes during system boot

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=191468

            Bug ID: 191468
           Summary: options VIMAGE - kernel panic, crashes during system
                    boot
           Product: Base System
           Version: 9.2-RELEASE
          Hardware: Any
                OS: Any
            Status: Needs Triage
          Severity: Affects Some People
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: dreamcat4 at gmail.com

Created attachment 144234
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=144234&action=edit
(Photo) Kernel Panic

Hello.
We have this week experienced a bad combination of kernel options. On
FreeBSD-9.2. Kernel crashes, panics during system boot.

Added:

+options VIMAGE
+device epair

Boot gets at least this far in DMESG:

http://i.imgur.com/f954gLW.jpg

Then panic occur here:

http://i.imgur.com/6nx6AiX.jpg

If the VIMAGE and pair are subsequently removed from the kernel config file,
then the new built image will boot up all fine.

This forum thread mentions some of conflicts which are suspected:

http://forums.nas4free.org/viewtopic.php?f=56&t=5917

We also may suspect other more generally (from past history of VIMAGE) -

PF, IPFW, CARP, ALTQ, LAGG, IPFILTER or IPNAT.

Kernel Config file to be attached soon.

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