NetBSD 3.1 kernel panic in arlad

I just had a NetBSD 3.1 Xen domU kernel panic in arlad last
night.  This is a XEN3_DOMU kernel, stock, from ftp.netbsd.org.

Does anybody want more information?  This box isn't really doing
anything, so I'll just let it sit at the db> prompt for the next
couple days.
  --david


nnpfs_message_installattr: tokens and no data (165,536870998,1,1) 
nnpfs_message_installattr: tokens and no data (165,536870998,1,1) 
nnpfs_new_node: tokens and no data (165,536870998,1,1) 
nnpfs_new_node: tokens and no data (165,536870998,1,1) 
nnpfs_new_node: tokens and no data (165,536870998,1,1) 
panic: kernel debugging assertion "(vp->v_flag & VONWORKLST)" failed: file "/home/builds/ab/netbsd-3-1-RELEASE/src/sys/miscfs/genfs/genfs_vnops.c", line 1322
Stopped in pid 479.1 (arlad) at netbsd:cpu_Debugger+0x4:      ppopl    %ebp
cpu_Debugger(c03fe26a,cb2c7a98,f,0,c06fa0c0) at netbsd:cpu_Debugger+0x4
panic(c042d600,c03f38af,c03fb3e1,c0421100,52a) at netbsd:panic+0x135
__assert(c03f38af,c0421100,52a,c03fb3e1,0) at netbsd:__assert+0x2e
genfs_putpages(cb2c7c14,0,0,c0bf44fc,c03e3ae0) at netbsd:genfs_putpages+0x8bb
VOP_PUTPAGES(cb5f8014,0,0,0,0) at netbsd:VOP_PUTPAGES+0x42
vinvalbuf(cb5f8014,1,ffffffff,cb2aa4d0,0) at netbsd:vinvalbuf+0x3b
vclean(cb5f8014,8,cb2aa4d0,cb262f60,cba53b34) at netbsd:vclean+0x229
vgonel(cb5f8014,cb2aa4d0,cb2c7d2c,cb25880d,cb5f8014) at netbsd:vgonel+0x65
vrecycle(cb5f8014,0,cb2aa4d0,cba53ba4,cb2aa4d0) at netbsd:vrecycle+0x25
emul_freebsd_object(0,c0b1e000,20,cb2aa4d0,1df) at 0xcb25880d
emul_freebsd_object(b100,cb2c7ec4,1,1,1df) at 0xcb2598dc
spec_write(cb2c7e34,cb225a98,cb2c7e5c,c03197a6,cb2c7e34) at netbsd:spec_write+0xa9
ufsspec_write(cb2c7e34,2,cb2c7e5c,c0318d78,c03e3160) at netbsd:ufsspec_write+0x3a
VOP_WRITE(cb225a98,cb2c7ec4,1,ca280000,0) at netbsd:VOP_WRITE+0x36
vn_write(ca295e00,ca295e28,cb2c7ec4,ca280000,1) at netbsd:vn_write+0xf0
dofilewrite(cb2aa4d0,9,ca295e00,bd8b6f70,20) at netbsd:dofilewrite+0x93
sys_write(ca28bbdc,cb2c7f64,cb2c7f5c,cb2aa4d0,ffffffff) at netbsd:sys_write+0x7a

syscall_plain() at netbsd:syscall_plain+0x19b
--- syscall (number 4) ---
0xbd999ebb:
ds          0x11
es          0x11
fs          0x31
gs          0x11
edi         0xc042d600  copyright+0x3f8c0
esi         0x100
ebp         0xcb2c7a5c
ebx         0xcb2c7a98
edx         0xc0527000  emul_freebsd_object+0xa76c0
ecx         0xfffffffe
eax         0x1
eip         0xc037bb94  cpu_Debugger+0x4
cs          0x9
eflags      0x202
esp         0xcb2c7a5c
ss          0x11
netbsd:cpu_Debugger+0x4:        popl    %ebp
Stopped in pid 479.1 (arlad) at netbsd:cpu_Debugger+0x4:
popl    %ebp
db>

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