Panic in kern_access

Hi,

below some crash info. However, since kib_at_ made some fixes that seem to relate 
to this, I shall rebuild my kernel with new sources.

At the time I was building various ports in a jail and asleep, so no other 
contributing factors.

panic: free: address 0xc62e0e00(0xc62e0000) has not been allocated.

#0  doadump () at pcpu.h:246
246   pcpu.h: No such file or directory.
   in pcpu.h
(kgdb) #0  doadump () at pcpu.h:246
#1  0xc0642b57 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:416
#2  0xc0642e49 in panic (fmt=Variable "fmt" is not available.
) at /usr/src/sys/kern/kern_shutdown.c:579
#3  0xc062fcfe in free (addr=0x0, mtp=0xc091c330)
    at /usr/src/sys/kern/kern_malloc.c:444
#4  0xc063b018 in crfree (cr=0xc795ea80) at /usr/src/sys/kern/kern_prot.c:1840
#5  0xc06d1ea2 in kern_accessat (td=0xcd5ea6c0, fd=-100,
    path=0x2808d000 <Address 0x2808d000 out of bounds>,
    pathseg=UIO_USERSPACE, flags=0, mode=0)
    at /usr/src/sys/kern/vfs_syscalls.c:2145
#6  0xc06d1f56 in kern_access (td=0xcd5ea6c0,
    path=0x2808d000 <Address 0x2808d000 out of bounds>,
    pathseg=UIO_USERSPACE, mode=0) at /usr/src/sys/kern/vfs_syscalls.c:2104
#7  0xc06d1f89 in access (td=0xcd5ea6c0, uap=0xf9129cf8)
    at /usr/src/sys/kern/vfs_syscalls.c:2079
#8  0xc086fff5 in syscall (frame=0xf9129d38)
    at /usr/src/sys/i386/i386/trap.c:1073
#9  0xc0853a50 in Xint0x80_syscall ()
    at /usr/src/sys/i386/i386/exception.s:261
#10 0x00000033 in ?? ()
Previous frame inner to this frame (corrupt stack?)

8.0-BETA4 FreeBSD 8.0-BETA4 #14 r196875M. vmcore available if needed and I can 
rollback sources to r196875 for proper source refs, in case r197041 does not 
address this crash.
-- 
Mel