Date: Tue, 18 Mar 2003 08:11:44 -0500 From: Mike Tancsa <mike@sentex.net> To: hackers@freebsd.org Subject: Re: debugging a repeating panic (solved) Message-ID: <8a6e7vc93jhm2a7gln6h3efemoajhk51t9@4ax.com> In-Reply-To: <rwBUfB.A.ZbH.oHPU-@coal.sentex.ca> References: <rwBUfB.A.ZbH.oHPU-@coal.sentex.ca>
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Just a followup to this, jlemon narrowed down the problem for me to be
inet6 related. He wrote,
-------------
>I think I narrowed this down to IPv6. In particular, netstat shows:
>
>fe80::%lo0/64 fe80::1%lo0 Uc =
lo0
>fe80::1%lo0 link#3 UHL =
lo0
>
>with the first line being a cloned entry. The route is garbage=20
>collected after 1 day of inactivity, so that's when the crash happens.
>
>I'm not sure why it's crashing just yet, but something seems odd on
>the machine=20
Sure enough, I took out inet6 from the box and no more panics.
Sample dump below. (It was always in the same place)
(kgdb) bt full
#0 dumpsys () at /usr/src/sys/kern/kern_shutdown.c:487
error =3D 0
#1 0xc016726c in boot (howto=3D256) at =
/usr/src/sys/kern/kern_shutdown.c:316
howto =3D 256
#2 0xc01676ed in panic (fmt=3D0xc03109f9 "%s") at
/usr/src/sys/kern/kern_shutdown.c:595
fmt =3D 0xc03109f9 "%s"
bootopt =3D 256
buf =3D "page fault", '\000' <repeats 245 times>
#3 0xc02bf15e in trap_fatal (frame=3D0xded66e00, eva=3D1089938309) at
/usr/src/sys/i386/i386/trap.c:974
frame =3D (struct trapframe *) 0xded66e00
eva =3D 0
code =3D 16
type =3D 12
ss =3D 16
esp =3D 0
softseg =3D {ssd_base =3D 0, ssd_limit =3D 1048575, ssd_type =3D =
27,
ssd_dpl =3D 0, ssd_p =3D 1, ssd_xx =3D 13, ssd_xx1 =3D 2,=20
ssd_def32 =3D 1, ssd_gran =3D 1}
#4 0xc02bedb1 in trap_pfault (frame=3D0xded66e00, usermode=3D0,
eva=3D1089938309) at /usr/src/sys/i386/i386/trap.c:867
va =3D 1089937408
vm =3D (struct vmspace *) 0x0
map =3D 0xdea2a180
rv =3D 0
ftype =3D 1 '\001'
p =3D (struct proc *) 0xded89c60
#5 0xc02be8cb in trap (frame=3D{tf_fs =3D -566231016, tf_es =3D =
-556269552,
tf_ds =3D -556400624, tf_edi =3D -1020112715,=20
tf_esi =3D -1023322971, tf_ebp =3D -556372388, tf_isp =3D =
-556372436,
tf_ebx =3D 1089938309, tf_edx =3D -1023322937,=20
tf_ecx =3D -1023322939, tf_eax =3D 28, tf_trapno =3D 12, tf_err =3D=
0, tf_eip
=3D -1072019560, tf_cs =3D 8, tf_eflags =3D 66050,=20
tf_esp =3D 13568, tf_ss =3D -1020112720}) at
/usr/src/sys/i386/i386/trap.c:466
p =3D (struct proc *) 0xded89c60
sticks =3D 15876603469163024560
i =3D 0
ucode =3D 0
type =3D 12
code =3D 0
eva =3D 1089938309
#6 0xc01a4798 in ifa_ifwithnet (addr=3D0xc33250b0) at
/usr/src/sys/net/if.c:611
ifp =3D (struct ifnet *) 0xc035e120
ifa =3D (struct ifaddr *) 0x62000000
ifa_maybe =3D (struct ifaddr *) 0xc3015e00
af =3D 2
addr_data =3D 0xc33250b2 ""
cplim =3D 0x0
#7 0xc01cfa29 in in_pcbladdr (inp=3D0xdc550680, nam=3D0xc33250b0,
plocal_sin=3D0xded66e94) at /usr/src/sys/netinet/in_pcb.c:459
fport =3D 13568
ro =3D (struct route *) 0x3500
plocal_sin =3D (struct sockaddr_in **) 0x0
ia =3D (struct in_ifaddr *) 0x0
sin =3D (struct sockaddr_in *) 0xc33250b0
#8 0xc01cfb17 in in_pcbconnect (inp=3D0xdc550680, nam=3D0xc33250b0,
p=3D0xded89c60) at /usr/src/sys/netinet/in_pcb.c:526
inp =3D (struct inpcb *) 0xdc550680
ifaddr =3D (struct sockaddr_in *) 0xdc550680
sin =3D (struct sockaddr_in *) 0xc33250b0
sa =3D {sin_len =3D 176 '=B0', sin_family =3D 0 '\000', sin_port =
=3D 0,
sin_addr =3D {s_addr =3D 0},=20
sin_zero =3D "\000\000\000\000\200=F41=DC"}
error =3D 0
#9 0xc01e3709 in udp_connect (so=3D0xdc31f480, nam=3D0xc33250b0, =
p=3D0xded89c60)
at /usr/src/sys/netinet/udp_usrreq.c:866
p =3D (struct proc *) 0xded89c60
inp =3D (struct inpcb *) 0xdc550680
s =3D 1644167168
error =3D 0
#10 0xc0186564 in soconnect (so=3D0xdc31f480, nam=3D0xc33250b0, =
p=3D0xded89c60)
at /usr/src/sys/kern/uipc_socket.c:389
so =3D (struct socket *) 0xdc31f480
nam =3D (struct sockaddr *) 0x0
p =3D (struct proc *) 0x0
s =3D 0
error =3D 0
---Type <return> to continue, or q <return> to quit---
#11 0xc0189c28 in connect (p=3D0xded89c60, uap=3D0xded66f80) at
/usr/src/sys/kern/uipc_syscalls.c:394
uap =3D (struct connect_args *) 0xded66f80
fp =3D (struct file *) 0xc3ea9640
so =3D (struct socket *) 0xdc31f480
sa =3D (struct sockaddr *) 0xc33250b0
error =3D 0
s =3D -600705920
#12 0xc02bf4ad in syscall2 (frame=3D{tf_fs =3D -1078001617, tf_es =3D 47,=
tf_ds =3D
-1078001617, tf_edi =3D -1077983904, tf_esi =3D 59,=20
tf_ebp =3D -1077996464, tf_isp =3D -556372012, tf_ebx =3D =
673944780, tf_edx
=3D 0, tf_ecx =3D 0, tf_eax =3D 98, tf_trapno =3D 12,=20
tf_err =3D 2, tf_eip =3D 673621160, tf_cs =3D 31, tf_eflags =3D =
659, tf_esp =3D
-1077997132, tf_ss =3D 47})
at /usr/src/sys/i386/i386/trap.c:1175
params =3D 0xbfbf11b8 "\b"
i =3D 0
callp =3D (struct sysent *) 0xc031fff0
p =3D (struct proc *) 0xded89c60
orig_tf_eflags =3D 659
sticks =3D 0
error =3D 0
narg =3D 3
args =3D {8, 135103192, 16, 0, 0, 0, 0, 0}
have_mplock =3D 1
code =3D 98
#13 0xc02ab1db in Xint0x80_syscall ()
No symbol table info available.
#14 0x2827f651 in ?? ()
No symbol table info available.
#15 0x2827fb46 in ?? ()
No symbol table info available.
#16 0x8062a75 in ?? ()
No symbol table info available.
#17 0x807177b in ?? ()
No symbol table info available.
#18 0x8058169 in ?? ()
No symbol table info available.
#19 0x80811bc in ?? ()
No symbol table info available.
#20 0x8080c42 in ?? ()
No symbol table info available.
#21 0x8081079 in ?? ()
No symbol table info available.
#22 0x8080e0d in ?? ()
No symbol table info available.
#23 0x8083052 in ?? ()
No symbol table info available.
#24 0x805184a in ?? ()
No symbol table info available.
#25 0x806e424 in ?? ()
No symbol table info available.
#26 0x804c03a in ?? ()
No symbol table info available.
(kgdb)=20
---Mike
Mike Tancsa (mike@sentex.net)=09
http://www.sentex.net/mike
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