kern/40625: netbsd-5 crash in fork path

[joerg%NetBSD.org@localhost]

>Number:         40625
>Category:       kern
>Synopsis:       netbsd-5 crash in fork path
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Feb 12 21:10:00 +0000 2009
>Originator:     Joerg Sonnenberger
>Release:        netbsd-5 as of two days ago
>Organization:
TNF
>Environment:
>Description:
panic: kmem_poison_check: 0xffff8000849eecf8: 0x00 != 0xe6
breakpoint() at netbsd:breakpoint+0x5
cpu_Debugger() at netbsd:cpu_Debugger+0x9
panic() at netbsd:panic+0x24d
kmem_poison_check() at netbsd:kmem_poison_check+0x82
kmem_free() at netbsd:kmem_free+0x44
fd_ofile_free() at netbsd:fd_ofile_free+0x1e
fd_copy() at netbsd:fd_copy+0x1ec  
fork1() at netbsd:fork1+0x7f5
sys_fork() at netbsd:sys_fork+0x32
syscall() at netbsd:syscall+0xb6

This kernel has the patch from ad for WAPBL flushing.
>How-To-Repeat:

>Fix: