kernel panic

6.0-CURRENT #1: Wed Jul  6 19:51:50 MSD 2005

SMP(HTT)
ADAPTIVE_GIANT
PREEMTION
IPI_PREEPTION
em0+sk0

runnning squid (100+req/s)

#0  doadump () at pcpu.h:165
#1  0xc04b89ed in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:397
#2  0xc04b916d in panic (fmt=0xc0639aff "%s") at 
/usr/src/sys/kern/kern_shutdown.c:553
#3  0xc061d127 in trap_fatal (frame=0xe6636a68, eva=21) at 
/usr/src/sys/i386/i386/trap.c:840
#4  0xc061d3be in trap_pfault (frame=0xe6636a68, usermode=0, eva=21) at 
/usr/src/sys/i386/i386/trap.c:751
#5  0xc061d7a0 in trap (frame=
      {tf_fs = 8, tf_es = -1060896728, tf_ds = -429719512, tf_edi = 1288, 
tf_esi = -1060879264, tf_ebp = -429692208, tf_isp = -429692268, tf_ebx = 0, 
tf_edx = -949833728, tf_ecx = 0, tf_eax = 0, tf_trapno = 12, tf_err = 0, 
tf_eip = -1067700672, tf_cs = 32, tf_eflags = 66118, tf_esp = -1060853344, 
tf_ss = 255}) at /usr/src/sys/i386/i386/trap.c:441
#6  0xc06038ba in calltrap () at /usr/src/sys/i386/i386/exception.s:139
#7  0x00000008 in ?? ()
#8  0xc0c40028 in ?? ()
#9  0xe6630028 in ?? ()
#10 0x00000508 in ?? ()
#11 0xc0c44460 in ?? ()
#12 0xe6636ad0 in ?? ()
#13 0xe6636a94 in ?? ()
#14 0x00000000 in ?? ()
#15 0xc762b000 in ?? ()
#16 0x00000000 in ?? ()
#17 0x00000000 in ?? ()
#18 0x0000000c in ?? ()
#19 0x00000000 in ?? ()
#20 0xc05c2e40 in uma_zfree_internal (zone=0xc0c4ab00, item=0xc3d26000, 
udata=0x0, skip=SKIP_NONE) at uma_int.h:358
#21 0xc05c4fed in uma_zfree_arg (zone=0xc0c4ab00, item=0xc3d26000, 
udata=0x0) at /usr/src/sys/vm/uma_core.c:2394
#22 0xc04aca94 in mb_fini_pack (mem=0xc7522100, size=256) at 
/usr/src/sys/kern/kern_mbuf.c:336
#23 0xc05c2f38 in uma_zfree_internal (zone=0xc0c4ac60, item=0xc7522100, 
udata=0x0, skip=SKIP_NONE)
    at /usr/src/sys/vm/uma_core.c:2423
#24 0xc05c4fed in uma_zfree_arg (zone=0xc0c4ac60, item=0xc7522100, 
udata=0x0) at /usr/src/sys/vm/uma_core.c:2394
#25 0xc0500966 in mb_free_ext (m=0xc7522100) at uma.h:304
#26 0xc0507f2c in sbdrop_locked (sb=0xc40374f4, len=4096) at mbuf.h:417
#27 0xc050817c in soisdisconnected (so=0xc403742c) at 
/usr/src/sys/kern/uipc_socket2.c:192
#28 0xc0572e21 in tcp_discardcb (tp=0xc4134000) at 
/usr/src/sys/netinet/tcp_subr.c:751
#29 0xc0572ee2 in tcp_close (tp=0x0) at /usr/src/sys/netinet/tcp_subr.c:772
#30 0xc0577a01 in tcp_timer_rexmt (xtp=0xc4134000) at 
/usr/src/sys/netinet/tcp_timer.c:495
#31 0xc04c8ed7 in softclock (dummy=0x0) at 
/usr/src/sys/kern/kern_timeout.c:295
#32 0xc04a0e47 in ithread_loop (arg=0xc309a580) at 
/usr/src/sys/kern/kern_intr.c:545
#33 0xc049fb3d in fork_exit (callout=0xc04a0da0 <ithread_loop>, arg=0x0, 
frame=0x0) at /usr/src/sys/kern/kern_fork.c:789
#34 0xc060391c in fork_trampoline () at 
/usr/src/sys/i386/i386/exception.s:208