kern/38558: panic during shutdown with moun_portal

[shinden%linux.pl@localhost]

>Number:         38558
>Category:       kern
>Synopsis:       panic during shutdown with moun_portal
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu May 01 23:15:00 +0000 2008
>Originator:     Daniel Horecki
>Release:        current
>Organization:
>Environment:
NetBSD tatooine.stars 4.99.61 NetBSD 4.99.61 (TATOOINE) #6: Mon Apr 28 16:49:29 
CEST 2008  
root%tatooine.stars@localhost:/usr/obj/sys/arch/i386/compile/TATOOINE i386

>Description:
During shutdown there is kernel panic with lock error. It stops in mount_portal 
process.

mutex error: mutex_vector_enter: locking against myself

bt:

breakpoint
panic
lockdebug_abort
mutex_abort
mutex_vector_enter
solock
do_sys_accept
sys_accept
syscall

>How-To-Repeat:
mount portal fs, then try to shutdown or reboot
>Fix: