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Date:      Tue, 4 Mar 2003 13:59:18 +0200
From:      Peter Pentchev <roam@ringlet.net>
To:        stable@FreeBSD.org
Subject:   4.8-PRE (and earlier) crash - syncookies?
Message-ID:  <20030304115918.GA554@straylight.oblivion.bg>

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Hi,

I think this has been going on for a couple of months; unfortunately, I
cannot remember exactly when it started :(  Several machines, which have
always been updated synchronously at intervals of a couple of weeks or
so, have been experiencing panics every few days with recent 4.6-STABLE,
4.7-STABLE, and 4.8-PRERELEASE kernel+world.

Attached is the kernel config and a gdb session of the most recent
crashdump.  Maybe the most interesting part is at the end of the gdb
session: is there a normal reason why a TAILQ structure would have a
null start pointer, and an end pointer pointing back to itself?

G'luck,
Peter

--=20
Peter Pentchev	roam@ringlet.net    roam@sbnd.net    roam@FreeBSD.org
PGP key:	http://people.FreeBSD.org/~roam/roam.key.asc
Key fingerprint	FDBA FD79 C26F 3C51 C95E  DF9E ED18 B68D 1619 4553
This sentence was in the past tense.

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Content-Disposition: attachment; filename=PAN-GB-HQ

#
# PAN-GB-HQ - kernel configuration for the Gabrovo Office 1 FreeBSD/i386 gw
#
# $FreeBSD: src/sys/i386/conf/GENERIC,v 1.246.2.35 2001/09/27 17:43:06 alfred Exp $

machine		i386
cpu		I686_CPU
ident		PAN-GB-HQ
maxusers	32

makeoptions	DEBUG="-ggdb -g3"	#Build kernel with gdb(1) debug symbols

options		INCLUDE_CONFIG_FILE

options 	INET			#InterNETworking
options 	INET6			#IPv6 communications protocols
options		IPSEC
options		IPSEC_ESP
options		IPSEC_DEBUG

options		IPFIREWALL
options		IPFIREWALL_VERBOSE
options		IPFIREWALL_FORWARD
options		IPFIREWALL_VERBOSE_LIMIT=100
options		IPV6FIREWALL
options		IPV6FIREWALL_VERBOSE
options		IPV6FIREWALL_VERBOSE_LIMIT=100
options		IPDIVERT
options		DUMMYNET

options		RANDOM_IP_ID
options		ACCEPT_FILTER_DATA
options		ACCEPT_FILTER_HTTP
options		TCP_DROP_SYNFIN
options		ICMP_BANDLIM

options 	FFS			#Berkeley Fast Filesystem
options 	FFS_ROOT		#FFS usable as root device [keep this!]
options 	SOFTUPDATES		#Enable FFS soft updates support
options		UFS_DIRHASH
options 	PROCFS			#Process filesystem
options		SUIDDIR

options 	COMPAT_43		#Compatible with BSD 4.3 [KEEP THIS!]
options 	SCSI_DELAY=15000	#Delay (in ms) before probing SCSI
options 	KTRACE			#ktrace(1) support

options 	SYSVSHM			#SYSV-style shared memory
options		SHMMNI=2048
options		SHMSEG=128

options 	SYSVMSG			#SYSV-style message queues
options		MSGMNI=2048
options		MSGTQL=2048

options 	SYSVSEM			#SYSV-style semaphores
options		SEMMNI=128
options		SEMMNS=2048
options		SEMMNU=1024
options		SEMUME=128

options 	P1003_1B		#Posix P1003_1B real-time extensions
options 	_KPOSIX_PRIORITY_SCHEDULING
options		ICMP_BANDLIM		#Rate limit bad replies

device		isa
device		pci

# Floppy drives
device		fdc0	at isa? port IO_FD1 irq 6 drq 2
device		fd0	at fdc0 drive 0

# ATA and ATAPI devices
device		ata0	at isa? port IO_WD1 irq 14
device		ata1	at isa? port IO_WD2 irq 15
device		ata
device		atadisk			# ATA disk drives
device		atapicd			# ATAPI CDROM drives
options 	ATA_STATIC_ID		#Static device numbering

# atkbdc0 controls both the keyboard and the PS/2 mouse
device		atkbdc0	at isa? port IO_KBD
device		atkbd0	at atkbdc? irq 1
device		psm0	at atkbdc? irq 12

device		vga0	at isa?

# splash screen/screen saver
pseudo-device	splash

# syscons is the default console driver, resembling an SCO console
device		sc0	at isa? flags 0x100
options		SC_MOUSE_CHAR=0x3

# Floating point support - do not disable.
device		npx0	at nexus? port IO_NPX irq 13

# Serial (COM) ports
device		sio0	at isa? port IO_COM1 flags 0x10 irq 4
device		sio1	at isa? port IO_COM2 irq 3
#device		sio2	at isa? disable port IO_COM3 irq 5
#device		sio3	at isa? disable port IO_COM4 irq 9

# PCI Ethernet NICs that use the common MII bus controller code.
# NOTE: Be sure to keep the 'device miibus' line in order to use these NICs!
device		miibus		# MII bus support
device		xl		# 3Com 3c90x (``Boomerang'', ``Cyclone'')

# Pseudo devices - the number indicates how many units to allocate.
pseudo-device	loop		# Network loopback
pseudo-device	ether		# Ethernet support
pseudo-device	tun		# Packet tunnel.
pseudo-device	pty		# Pseudo-ttys (telnet etc)
pseudo-device	gif		# IPv6 and IPv4 tunneling
pseudo-device	snp	3

# The `bpf' pseudo-device enables the Berkeley Packet Filter.
# Be aware of the administrative consequences of enabling this!
pseudo-device	bpf		#Berkeley packet filter

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Script started on Tue Mar  4 11:50:48 2003
Setting up interactive shell params..
[roam@flat:p2 ~]$ cd /var/crash
[roam@flat:p2 /var/crash]$ sudo gdb -k /usr/obj/usr/src/sys/PAN-GB-HQ/kerne=
l.debug vmcore.2
Password:
GNU gdb 4.18 (FreeBSD)
Copyright 1998 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain condition=
s.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "i386-unknown-freebsd"...Deprecated bfd_read cal=
led at /usr/src/gnu/usr.bin/binutils/gdb/../../../../contrib/gdb/gdb/dbxrea=
d.c line 2627 in elfstab_build_psymtabs
Deprecated bfd_read called at /usr/src/gnu/usr.bin/binutils/gdb/../../../..=
/contrib/gdb/gdb/dbxread.c line 933 in fill_symbuf

IdlePTD at phsyical address 0x0033b000
initial pcb at physical address 0x002a54e0
panicstr: page fault
panic messages:
---
Fatal trap 12: page fault while in kernel mode
fault virtual address	=3D 0x8
fault code		=3D supervisor read, page not present
instruction pointer	=3D 0x8:0xc01b2768
stack pointer	        =3D 0x10:0xc0284e3c
frame pointer	        =3D 0x10:0xc0284e48
code segment		=3D base 0x0, limit 0xfffff, type 0x1b
			=3D DPL 0, pres 1, def32 1, gran 1
processor eflags	=3D interrupt enabled, resume, IOPL =3D 0
current process		=3D Idle
interrupt mask		=3D=20
trap number		=3D 12
panic: page fault

syncing disks...=20

Fatal trap 12: page fault while in kernel mode
fault virtual address	=3D 0x30
fault code		=3D supervisor read, page not present
instruction pointer	=3D 0x8:0xc01f9ab4
stack pointer	        =3D 0x10:0xc0284c5c
frame pointer	        =3D 0x10:0xc0284c64
code segment		=3D base 0x0, limit 0xfffff, type 0x1b
			=3D DPL 0, pres 1, def32 1, gran 1
processor eflags	=3D interrupt enabled, resume, IOPL =3D 0
current process		=3D Idle
interrupt mask		=3D bio=20
trap number		=3D 12
panic: page fault
Uptime: 6d11h8m49s

dumping to dev #ad/0x20001, offset 524456
dump ata0: resetting devices .. done
255 254 253 252 251 250 249 248 247 246 245 244 243 242 241 240 239 238 237=
 236 235 234 233 232 231 230 229 228 227 226 225 224 223 222 221 220 219 21=
8 217 216 215 214 213 212 211 210 209 208 207 206 205 204 203 202 201 200 1=
99 198 197 196 195 194 193 192 191 190 189 188 187 186 185 184 183 182 181 =
180 179 178 177 176 175 174 173 172 171 170 169 168 167 166 165 164 163 162=
 161 160 159 158 157 156 155 154 153 152 151 150 149 148 147 146 145 144 14=
3 142 141 140 139 138 137 136 135 134 133 132 131 130 129 128 127 126 125 1=
24 123 122 121 120 119 118 117 116 115 114 113 112 111 110 109 108 107 106 =
105 104 103 102 101 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 =
82 81 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 =
57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 =
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 =
6 5 4 3 2 1 0=20
---
#0  dumpsys () at /usr/src/sys/kern/kern_shutdown.c:487
487		if (dumping++) {
(kgdb) bt
#0  dumpsys () at /usr/src/sys/kern/kern_shutdown.c:487
#1  0xc0151020 in boot (howto=3D260) at /usr/src/sys/kern/kern_shutdown.c:3=
16
#2  0xc0151454 in poweroff_wait (junk=3D0xc027d7ac, howto=3D-1071131953)
    at /usr/src/sys/kern/kern_shutdown.c:595
#3  0xc023d9e7 in trap_fatal (frame=3D0xc0284c1c, eva=3D48)
    at /usr/src/sys/i386/i386/trap.c:974
#4  0xc023d6a1 in trap_pfault (frame=3D0xc0284c1c, usermode=3D0, eva=3D48)
    at /usr/src/sys/i386/i386/trap.c:867
#5  0xc023d277 in trap (frame=3D{tf_fs =3D 16, tf_es =3D 16, tf_ds =3D -107=
2431088,=20
      tf_edi =3D 0, tf_esi =3D 2, tf_ebp =3D -1071100828, tf_isp =3D -10711=
00856,=20
      tf_ebx =3D -1071017220, tf_edx =3D 6864960, tf_ecx =3D -1070874464,=
=20
      tf_eax =3D 0, tf_trapno =3D 12, tf_err =3D 0, tf_eip =3D -1071670604,=
 tf_cs =3D 8,=20
      tf_eflags =3D 66050, tf_esp =3D -1071100708, tf_ss =3D 2})
    at /usr/src/sys/i386/i386/trap.c:466
#6  0xc01f9ab4 in acquire_lock (lk=3D0xc02992fc)
    at /usr/src/sys/ufs/ffs/ffs_softdep.c:266
#7  0xc01fe202 in softdep_fsync_mountdev (vp=3D0xcbb2eb40)
    at /usr/src/sys/ufs/ffs/ffs_softdep.c:4024
#8  0xc0202512 in ffs_fsync (ap=3D0xc0284cdc)
    at /usr/src/sys/ufs/ffs/ffs_vnops.c:134
#9  0xc0201150 in ffs_sync (mp=3D0xc0ef0000, waitfor=3D2, cred=3D0xc0a3b600=
,=20
    p=3D0xc02bc0a0) at vnode_if.h:558
#10 0xc0182107 in sync (p=3D0xc02bc0a0, uap=3D0x0)
    at /usr/src/sys/kern/vfs_syscalls.c:576
#11 0xc0150ddb in boot (howto=3D256) at /usr/src/sys/kern/kern_shutdown.c:2=
35
#12 0xc0151454 in poweroff_wait (junk=3D0xc027d7ac, howto=3D-1071131953)
    at /usr/src/sys/kern/kern_shutdown.c:595
#13 0xc023d9e7 in trap_fatal (frame=3D0xc0284dfc, eva=3D8)
    at /usr/src/sys/i386/i386/trap.c:974
---Type <return> to continue, or q <return> to quit---
#14 0xc023d6a1 in trap_pfault (frame=3D0xc0284dfc, usermode=3D0, eva=3D8)
    at /usr/src/sys/i386/i386/trap.c:867
#15 0xc023d277 in trap (frame=3D{tf_fs =3D 6422544, tf_es =3D -1072300016,=
=20
      tf_ds =3D -1071120368, tf_edi =3D 6422528, tf_esi =3D -1058083972,=20
      tf_ebp =3D -1071100344, tf_isp =3D -1071100376, tf_ebx =3D -880342144=
,=20
      tf_edx =3D 0, tf_ecx =3D 0, tf_eax =3D -1, tf_trapno =3D 12, tf_err =
=3D 0,=20
      tf_eip =3D -1071962264, tf_cs =3D 8, tf_eflags =3D 66182, tf_esp =3D =
-880342144,=20
      tf_ss =3D -1054661004}) at /usr/src/sys/i386/i386/trap.c:466
#16 0xc01b2768 in syncache_insert (sc=3D0xcb870b80, sch=3D0xc0eeeb7c)
    at /usr/src/sys/netinet/tcp_syncache.c:289
#17 0xc01b3639 in syncache_add (inc=3D0xc0284ee8, to=3D0xc0284f54, th=3D0xc=
0ab0024,=20
    sop=3D0xc0284ee4, m=3D0xc0aadc00) at /usr/src/sys/netinet/tcp_syncache.=
c:1021
#18 0xc01adcc3 in tcp_input (m=3D0xc0aadc00, off0=3D20, proto=3D6)
    at /usr/src/sys/netinet/tcp_input.c:826
#19 0xc01a8cba in ip_input (m=3D0xc0aadc00)
    at /usr/src/sys/netinet/ip_input.c:910
#20 0xc01a8d37 in ipintr () at /usr/src/sys/netinet/ip_input.c:934
#21 0xc02330b9 in swi_net_next ()
(kgdb) bt full
#0  dumpsys () at /usr/src/sys/kern/kern_shutdown.c:487
	error =3D 0
#1  0xc0151020 in boot (howto=3D260) at /usr/src/sys/kern/kern_shutdown.c:3=
16
	howto =3D 260
#2  0xc0151454 in poweroff_wait (junk=3D0xc027d7ac, howto=3D-1071131953)
    at /usr/src/sys/kern/kern_shutdown.c:595
	fmt =3D 0xc027d7ac "%s"
	bootopt =3D 260
	buf =3D "page fault", '\000' <repeats 245 times>
#3  0xc023d9e7 in trap_fatal (frame=3D0xc0284c1c, eva=3D48)
    at /usr/src/sys/i386/i386/trap.c:974
	frame =3D (struct trapframe *) 0x104
	eva =3D 0
	code =3D -1071130708
	type =3D 12
	ss =3D -1071130708
	esp =3D 0
	softseg =3D {ssd_base =3D 0, ssd_limit =3D 1048575, ssd_type =3D 27,=20
  ssd_dpl =3D 0, ssd_p =3D 1, ssd_xx =3D 4, ssd_xx1 =3D 2, ssd_def32 =3D 1,=
 ssd_gran =3D 1}
#4  0xc023d6a1 in trap_pfault (frame=3D0xc0284c1c, usermode=3D0, eva=3D48)
    at /usr/src/sys/i386/i386/trap.c:867
	va =3D 0
	vm =3D (struct vmspace *) 0x0
	map =3D 0xc
	rv =3D 0
	ftype =3D 192 '=C0'
	p =3D (struct proc *) 0x0
#5  0xc023d277 in trap (frame=3D{tf_fs =3D 16, tf_es =3D 16, tf_ds =3D -107=
2431088,=20
      tf_edi =3D 0, tf_esi =3D 2, tf_ebp =3D -1071100828, tf_isp =3D -10711=
00856,=20
---Type <return> to continue, or q <return> to quit---
      tf_ebx =3D -1071017220, tf_edx =3D 6864960, tf_ecx =3D -1070874464,=
=20
      tf_eax =3D 0, tf_trapno =3D 12, tf_err =3D 0, tf_eip =3D -1071670604,=
 tf_cs =3D 8,=20
      tf_eflags =3D 66050, tf_esp =3D -1071100708, tf_ss =3D 2})
    at /usr/src/sys/i386/i386/trap.c:466
	p =3D (struct proc *) 0x0
	sticks =3D 13847272392516173825
	i =3D 0
	ucode =3D 0
	type =3D 12
	code =3D 0
	eva =3D 48
#6  0xc01f9ab4 in acquire_lock (lk=3D0xc02992fc)
    at /usr/src/sys/ufs/ffs/ffs_softdep.c:266
	lk =3D (struct lockit *) 0x6ac040
	holder =3D 2
#7  0xc01fe202 in softdep_fsync_mountdev (vp=3D0xcbb2eb40)
    at /usr/src/sys/ufs/ffs/ffs_softdep.c:4024
	bp =3D (struct buf *) 0xc0284cdc
	nbp =3D (struct buf *) 0xc0284cb4
	wk =3D (struct worklist *) 0x0
#8  0xc0202512 in ffs_fsync (ap=3D0xc0284cdc)
    at /usr/src/sys/ufs/ffs/ffs_vnops.c:134
	vp =3D (struct vnode *) 0xcbb2eb40
	bp =3D (struct buf *) 0xc0284cdc
	nbp =3D (struct buf *) 0xc0284cf0
	s =3D -1070874464
	error =3D 0
	wait =3D 0
	passes =3D -877466816
---Type <return> to continue, or q <return> to quit---
	skipmeta =3D -1071097632
	lbn =3D 2147483647
#9  0xc0201150 in ffs_sync (mp=3D0xc0ef0000, waitfor=3D2, cred=3D0xc0a3b600=
,=20
    p=3D0xc02bc0a0) at vnode_if.h:558
	a =3D {a_desc =3D 0xc0285620, a_vp =3D 0xcbb2eb40, a_cred =3D 0xc0a3b600,=
=20
  a_waitfor =3D 2, a_p =3D 0xc02bc0a0}
	vp =3D (struct vnode *) 0x0
	cred =3D (struct ucred *) 0xc0a3b600
	waitfor =3D 2
	p =3D (struct proc *) 0xc02bc0a0
	waitfor =3D 2
	nvp =3D (struct vnode *) 0x0
	vp =3D (struct vnode *) 0xc0284cdc
	ip =3D (struct inode *) 0x0
	ump =3D (struct ufsmount *) 0xc0f04e00
	fs =3D (struct fs *) 0xc0f03000
	error =3D 0
	allerror =3D 0
#10 0xc0182107 in sync (p=3D0xc02bc0a0, uap=3D0x0)
    at /usr/src/sys/kern/vfs_syscalls.c:576
	p =3D (struct proc *) 0xc02bc0a0
	mp =3D (struct mount *) 0xc0ef0000
	nmp =3D (struct mount *) 0x0
	asyncflag =3D 0
#11 0xc0150ddb in boot (howto=3D256) at /usr/src/sys/kern/kern_shutdown.c:2=
35
	bp =3D (struct buf *) 0x0
	iter =3D 5
	nbusy =3D -1071130708
	pbusy =3D -1071100576
---Type <return> to continue, or q <return> to quit---
	howto =3D 256
#12 0xc0151454 in poweroff_wait (junk=3D0xc027d7ac, howto=3D-1071131953)
    at /usr/src/sys/kern/kern_shutdown.c:595
	fmt =3D 0xc027d7ac "%s"
	bootopt =3D 256
	buf =3D "page fault", '\000' <repeats 245 times>
#13 0xc023d9e7 in trap_fatal (frame=3D0xc0284dfc, eva=3D8)
    at /usr/src/sys/i386/i386/trap.c:974
	frame =3D (struct trapframe *) 0x100
	eva =3D 0
	code =3D -1071130708
	type =3D 12
	ss =3D -1071130708
	esp =3D 0
	softseg =3D {ssd_base =3D 0, ssd_limit =3D 1048575, ssd_type =3D 27,=20
  ssd_dpl =3D 0, ssd_p =3D 1, ssd_xx =3D 0, ssd_xx1 =3D 0, ssd_def32 =3D 1,=
 ssd_gran =3D 1}
#14 0xc023d6a1 in trap_pfault (frame=3D0xc0284dfc, usermode=3D0, eva=3D8)
    at /usr/src/sys/i386/i386/trap.c:867
	va =3D 0
	vm =3D (struct vmspace *) 0x0
	map =3D 0xc
	rv =3D 0
	ftype =3D 192 '=C0'
	p =3D (struct proc *) 0x0
#15 0xc023d277 in trap (frame=3D{tf_fs =3D 6422544, tf_es =3D -1072300016,=
=20
      tf_ds =3D -1071120368, tf_edi =3D 6422528, tf_esi =3D -1058083972,=20
      tf_ebp =3D -1071100344, tf_isp =3D -1071100376, tf_ebx =3D -880342144=
,=20
      tf_edx =3D 0, tf_ecx =3D 0, tf_eax =3D -1, tf_trapno =3D 12, tf_err =
=3D 0,=20
      tf_eip =3D -1071962264, tf_cs =3D 8, tf_eflags =3D 66182, tf_esp =3D =
-880342144,=20
---Type <return> to continue, or q <return> to quit---
      tf_ss =3D -1054661004}) at /usr/src/sys/i386/i386/trap.c:466
	p =3D (struct proc *) 0x0
	sticks =3D 22531436045668236
	i =3D 0
	ucode =3D 0
	type =3D 12
	code =3D 0
	eva =3D 8
#16 0xc01b2768 in syncache_insert (sc=3D0xcb870b80, sch=3D0xc0eeeb7c)
    at /usr/src/sys/netinet/tcp_syncache.c:289
	sc =3D (struct syncache *) 0x620000
	sch =3D (struct syncache_head *) 0xc0eeeb7c
	sc2 =3D (struct syncache *) 0x0
	s =3D 6422528
	i =3D 0
#17 0xc01b3639 in syncache_add (inc=3D0xc0284ee8, to=3D0xc0284f54, th=3D0xc=
0ab0024,=20
    sop=3D0xc0284ee4, m=3D0xc0aadc00) at /usr/src/sys/netinet/tcp_syncache.=
c:1021
	inc =3D (struct in_conninfo *) 0xc1232674
	th =3D (struct tcphdr *) 0x0
	tp =3D (struct tcpcb *) 0xcb813d40
	so =3D (struct socket *) 0xcb785980
	sc =3D (struct syncache *) 0xcb870b80
	sch =3D (struct syncache_head *) 0xc0eeeb7c
	ipopts =3D (struct mbuf *) 0x0
	taop =3D (struct rmxp_tao *) 0xc1232674
	i =3D 0
	s =3D 4
#18 0xc01adcc3 in tcp_input (m=3D0xc0aadc00, off0=3D20, proto=3D6)
    at /usr/src/sys/netinet/tcp_input.c:826
---Type <return> to continue, or q <return> to quit---
	inc =3D {inc_flags =3D 0 '\000', inc_len =3D 101 'e', inc_pad =3D 49178,=
=20
  inc_ie =3D {ie_fport =3D 14348, ie_lport =3D 20480, ie_dependfaddr =3D {
      ie46_foreign =3D {ia46_pad32 =3D {3237187428, 131072, 3232422912},=20
        ia46_addr4 =3D {s_addr =3D 4196968640}}, ie6_foreign =3D {__u6_addr=
 =3D {
          __u6_addr8 =3D "d\217=F3=C0\000\000\002\000\000=DC=AA=C0=C0=A8(=
=FA", __u6_addr16 =3D {
            36708, 49395, 0, 2, 56320, 49322, 43200, 64040}, __u6_addr32 =
=3D {
            3237187428, 131072, 3232422912, 4196968640}}}}, ie_dependladdr =
=3D {
      ie46_local =3D {ia46_pad32 =3D {3232422912, 3238793776, 0}, ia46_addr=
4 =3D {
          s_addr =3D 2349844673}}, ie6_local =3D {__u6_addr =3D {
          __u6_addr8 =3D "\000=DC=AA=C00\022\f=C1\000\000\000\000=C1=C8\017=
\214",=20
          __u6_addr16 =3D {56320, 49322, 4656, 49420, 0, 0, 51393, 35855},=
=20
          __u6_addr32 =3D {3232422912, 3238793776, 0, 2349844673}}}}},=20
  inc_dependroute =3D {inc4_route =3D {ro_rt =3D 0x0, ro_dst =3D {sa_len =
=3D 0 '\000',=20
        sa_family =3D 80 'P',=20
        sa_data =3D "\f8\000\000\000@\024\000\000\000\000\200=D4=C0"}},=20
    inc6_route =3D {ro_rt =3D 0x0, ro_dst =3D {sin6_len =3D 0 '\000',=20
        sin6_family =3D 80 'P', sin6_port =3D 14348, sin6_flowinfo =3D 1073=
741824,=20
        sin6_addr =3D {__u6_addr =3D {
            __u6_addr8 =3D "\024\000\000\000\000\200=D4=C0\020\000=AB=C0=C8=
O(=C0",=20
            __u6_addr16 =3D {20, 0, 32768, 49364, 16, 49323, 20424, 49192},=
=20
            __u6_addr32 =3D {20, 3235151872, 3232432144, 3223867336}}},=20
        sin6_scope_id =3D 3223867340}}}}
	th =3D (struct tcphdr *) 0xc0ab0024
	ip =3D (struct ip *) 0xc0ab0010
	ipov =3D (struct ipovly *) 0xcb813c80
	inp =3D (struct inpcb *) 0xcb813c80
	optp =3D (u_char *) 0xc0ab0038 "\002\004\005=B4\001\001\004\002"
	optlen =3D 8
	len =3D -1071100076
---Type <return> to continue, or q <return> to quit---
	tlen =3D 0
	off =3D -1071100076
	drop_hdrlen =3D 48
	tp =3D (struct tcpcb *) 0xcb813d40
	thflags =3D 2
	so =3D (struct socket *) 0xcb785980
	todrop =3D -1071100076
	acked =3D -880722816
	ourfinisacked =3D -1071100076
	needoutput =3D 0
	tiwin =3D 64240
	to =3D {to_flags =3D 16, to_tsval =3D 0, to_tsecr =3D 0, to_cc =3D 0,=20
  to_ccecho =3D 0, to_mss =3D 1460, to_requested_s_scale =3D 0 '\000',=20
  to_pad =3D 0 '\000'}
	taop =3D (struct rmxp_tao *) 0xc0284f54
	tao_noncached =3D {tao_cc =3D 1, tao_ccsent =3D 3235151872, tao_mssopt =3D=
 2}
	next_hop =3D (struct sockaddr_in *) 0xc0f3807c
	rstreason =3D -1071100076
	ip6 =3D (struct ip6_hdr *) 0x0
	isipv6 =3D 0
#19 0xc01a8cba in ip_input (m=3D0xc0aadc00)
    at /usr/src/sys/netinet/ip_input.c:910
	tag =3D {mh_next =3D 0xc0aadc00, mh_nextpkt =3D 0xc0d482f0,=20
  mh_data =3D 0xc0f3807c "\020\0028\f=C0=A8(=FE", mh_len =3D -1071717142, m=
h_type =3D 13,=20
  mh_flags =3D 18}
	m =3D (struct mbuf *) 0xc0aadc00
	ip =3D (struct ip *) 0xc0ab0010
	fp =3D (struct ipq *) 0xc0284fb8
	ia =3D (struct in_ifaddr *) 0xc0f35f00
---Type <return> to continue, or q <return> to quit---
	ifa =3D (struct ifaddr *) 0x0
	i =3D 0
	hlen =3D 20
	checkif =3D 0
	sum =3D 0
	pkt_dst =3D {s_addr =3D 4264077504}
	divert_info =3D 0
	args =3D {m =3D 0xc0aadc00, oif =3D 0x0, next_hop =3D 0xc0f3807c, rule =3D=
 0x0,=20
  eh =3D 0x0, ro =3D 0xc014f22a, dst =3D 0xc02a50b0, flags =3D -1070877576,=
 f_id =3D {
    dst_ip =3D 3251113868, src_ip =3D 3232246010, dst_port =3D 80, src_port=
 =3D 3128,=20
    proto =3D 6 '\006', flags =3D 2 '\002'}, divert_rule =3D 0, retval =3D =
3223998624}
#20 0xc01a8d37 in ipintr () at /usr/src/sys/netinet/ip_input.c:934
	s =3D 0
	m =3D (struct mbuf *) 0xc0aadc00
#21 0xc02330b9 in swi_net_next ()
No symbol table info available.
(kgdb) fr 16
#16 0xc01b2768 in syncache_insert (sc=3D0xcb870b80, sch=3D0xc0eeeb7c)
    at /usr/src/sys/netinet/tcp_syncache.c:289
289			sc2 =3D TAILQ_FIRST(&sch->sch_bucket);
(kgdb) print sch
$1 =3D (struct syncache_head *) 0xc0eeeb7c
(kgdb) print *sch
$2 =3D {sch_bucket =3D {tqh_first =3D 0x0, tqh_last =3D 0xc0eeeb7c},=20
  sch_length =3D 4294967295}
(kgdb) q
[roam@flat:p2 /var/crash]$ exit
exit

Script done on Tue Mar  4 11:51:49 2003

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