panic at reboot - assertion: vp->v_lock.lk_exclusivecount == 1 in vgone_ interlocked

Thomas Nikolajsen thomas.nikolajsen at
Tue Apr 10 15:05:37 PDT 2007

Btw: I also saw this panic once without using vn(4):
using 1.8.0 SMP kernel om MP (HTT) machine.

Was upgrading from 1.8.0 to 1.8.1:
Did build/install world & kernel using nfs mounted /usr/src & /usr/obj;
at reboot it panic'ed, but core dump wasn't saved to file at next boot.


Thomas Nikolajsen <thomas.nikolajsen at> wrote:
> Commands used (script): inspired by vkernel(7):
> vnconfig -cs labels vn0 FILE
> fsck -y /dev/vn0a
> mount /dev/vn0a /mnt
> make installworld DESTDIR=/mnt
> umount /mnt
> vnconfig -u vn0
> reboot
> FILE on UFS.
> It might seem like panic occurs if I fiddle with /mnt while
> vn0a mounted: df; df /mnt
>  -thomas
. .

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