union mount with lfs participant

		</var/obj -- lfs>
<mount point>
		<sources>

[hauke@pizza] /home/hauke # df
Filesystem                     1K-blocks     Used     Avail Capacity  Mounted on
/dev/sd1d                         719135   342624    340554    50%    /usr
/dev/sd1f                        2440565   116745   2079764     5%    /var/obj
/dev/sd2e                        4964604  3931436    784936    83%    /u1
<below>:/u1/netbsd-20/src         456267    79756    340554    18%    /usr/src
<above>:/var/obj/netbsd-20/src   2520208   196509   2079654     8%    /usr/src



action: 'config KERNEL'


panic: lfs_valloc: inuse inode 14221 on the free list
Stopped in pid 615.1 (config) at  netbsd:cpu_Debugger+0x4:   or  %o7, %g0, %g1
db{1}> t
cpu_Debugger(0xf025ac30, 0x378d, 0x100, 0xf0bdcf18, 0xffffffff, 0xf029b400) at netbsd:lfs_valloc+0x28c
lfs_valloc(0xf4becab8, 0xff, 0x1000000, 0x2, 0x8, 0xf0b67e00) at netbsd:ufs_makeinode+0x6c
ufs_makeinode(0xa1ed, 0xf4e04740, 0xf4bece10, 0xf4bece24, 0xf0301c74, 0xf0298c00) at netbsd:ufs_symlink+0x20
ufs_symlink(0xf4becd28, 0x0, 0x50f, 0xffffffff, 0x0, 0xf4e04740) at netbsd:lfs_symlink+0x30
lfs_symlink(0xf4becd28, 0xf0265d40, 0x5ac, 0xf0b67e00, 0xf3ce7800, 0xf4bece48) at netbsd:union_symlink+0x90
union_symlink(0xf4becdb0, 0xf0e03e00, 0x2, 0xf4e04828, 0xf0b67700, 0xf4e04828) at netbsd:sys_symlink+0x1c8
sys_symlink(0x0, 0xf4becf28, 0xf4becf20, 0x0, 0xf3d07c48, 0x81c06000) at netbsd:syscall+0x1d0
syscall(0x39, 0xf4becfb0, 0x1009f428, 0xefffee50, 0x400, 0xf4becf28) at 0xf0006524
db{1}> sync
syncing disks... xcall(cpu1,0xf02132c8): couldn't ping cpus: cpu0
xcall(cpu1,0xf02132c8): couldn't ping cpus: cpu0
xcall(cpu1,0xf02132c8): couldn't ping cpus: cpu0

[...]