kernel panic

I've got panic with cvsuped CURRENT-6 kernel from Fri Jun 24 14:11:40 MSD 2005
This is HTT SMP machine with ADAPTIVE_GIANT and no PREEMTION or IPI_PREEMPTION 

Jura


#0  doadump () at pcpu.h:165
165             __asm __volatile("movl %%fs:0,%0" : "=r" (td));
(kgdb) bt
#0  doadump () at pcpu.h:165
#1  0xc04b8dd0 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:397
#2  0xc04b961d in panic (fmt=0xc0646f02 "sbflush_locked: cc %u || mb %p || mbcnt %u")
    at /usr/src/sys/kern/kern_shutdown.c:553
#3  0xc050853f in sbflush_locked (sb=0xc40a2b1c) at /usr/src/sys/kern/uipc_socket2.c:1112
#4  0xc0508572 in sbrelease_locked (sb=0xc40a2b1c, so=0x0) at /usr/src/sys/kern/uipc_socket2.c:557
#5  0xc05052f2 in sofree (so=0xc40a2a60) at /usr/src/sys/kern/uipc_socket.c:402
#6  0xc055b97f in in_pcbdetach (inp=0xc58944ec) at /usr/src/sys/netinet/in_pcb.c:728
#7  0xc0572fca in tcp_close (tp=0x0) at /usr/src/sys/netinet/tcp_subr.c:779
#8  0xc056f01f in tcp_input (m=0xc4dc8b00, off0=1) at /usr/src/sys/netinet/tcp_input.c:2200
#9  0xc05669c5 in ip_input (m=0xc4dc8b00) at /usr/src/sys/netinet/ip_input.c:776
#10 0xc0549831 in ether_demux (ifp=0xc319f000, m=0xc4dc8b00) at /usr/src/sys/net/if_ethersubr.c:850
#11 0xc0549bf9 in ether_input (ifp=0xc319f000, m=0xc4dc8b00) at /usr/src/sys/net/if_ethersubr.c:640
#12 0xc0447bde in em_intr (arg=0xc3169000) at /usr/src/sys/dev/em/if_em.c:2908
#13 0xc04a1147 in ithread_loop (arg=0xc3099800) at /usr/src/sys/kern/kern_intr.c:545
#14 0xc049fe3d in fork_exit (callout=0xc04a10a0 <ithread_loop>, arg=0x0, frame=0x0) at /usr/src/sys/kern/kern_fork.c:789
#15 0xc060758c in fork_trampoline () at /usr/src/sys/i386/i386/exception.s:208