Date: Mon, 06 Sep 2004 02:58:49 +0200 From: Andreas Kohn <andreas.kohn@gmx.net> To: freebsd-current@freebsd.org Subject: Panic (Page fault) related to ipv6? [softclock, nd6_timer, in6_purgeaddr, in6_unlink_ifa] Message-ID: <1094432328.878.7.camel@klamath.ankon.de.eu.org>
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Hi,
just got this panic, perhaps someone is interested. Happened when
reading a probably damaged CD, don't know if that is related (didn't
look so in the backtrace).
System is FreeBSD klamath.ankon.de.eu.org 6.0-CURRENT FreeBSD
6.0-CURRENT #16: Sun Sep 5 12:18:47 CEST 2004 =20
root@klamath.ankon.de.eu.org:/usr/obj/usr/src/sys/KLAMATH i386,
sources from around ~0900.
Kernel config contains IPV6, IPSEC (so no mpsafenet), ULE, and the
default setting for PREEMPTION (i didn't set any), no WITNESS or
INVARIANTS, but makeoptions DEBUG=3D-g.
Here it is:
-----
Fatal trap 12: page fault while in kernel mode
fault virtual address =3D 0x1
fault code =3D supervisor write, page not present
instruction pointer =3D 0x8:0xc05e5f12
stack pointer =3D 0x10:0xcbf1dc0c
frame pointer =3D 0x10:0xcbf1dc28
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 27 (swi5: clock sio)
trap number =3D 12
panic: page fault
(kgdb) bt full
#0 doadump () at pcpu.h:159
No locals.
#1 0xc051b576 in boot (howto=3D260) at
/usr/src/sys/kern/kern_shutdown.c:385
first_buf_printf =3D 1
#2 0xc051bcf7 in panic (fmt=3D0xc0708284 "%s")
at /usr/src/sys/kern/kern_shutdown.c:541
bootopt =3D 260
newpanic =3D 0
buf =3D "page fault", '\0' <repeats 245 times>
#3 0xc06de456 in trap_fatal (frame=3D0xcbf1dbcc, eva=3D1)
at /usr/src/sys/i386/i386/trap.c:809
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=
,=20
ssd_dpl =3D 0, ssd_p =3D 1, ssd_xx =3D 4, ssd_xx1 =3D 1, ssd_def32 =3D 1,
ssd_gran =3D 1}
#4 0xc06de6fb in trap_pfault (frame=3D0xcbf1dbcc, usermode=3D0, eva=3D1)
at /usr/src/sys/i386/i386/trap.c:727
va =3D 0
vm =3D (struct vmspace *) 0x0
map =3D 0xc076cb20
rv =3D 1
---Type <return> to continue, or q <return> to quit---
ftype =3D 1 '\001'
p =3D (struct proc *) 0x0
#5 0xc06deaf5 in trap (frame=3D
{tf_fs =3D 24, tf_es =3D 16, tf_ds =3D 16, tf_edi =3D -1042350080, tf=
_esi
=3D -1, tf_ebp =3D -873341912, tf_isp =3D -873341960, tf_ebx =3D -104235008=
0,
tf_edx =3D -1043508736, tf_ecx =3D -1042350080, tf_eax =3D 1, tf_trapno =3D=
12,
tf_err =3D 2, tf_eip =3D -1067557102, tf_cs =3D 8, tf_eflags =3D 66182, tf_=
esp =3D
4, tf_ss =3D 582})
at /usr/src/sys/i386/i386/trap.c:417
p =3D (struct proc *) 0xc1901540
sticks =3D 3421625312
i =3D 0
ucode =3D 0
type =3D 12
code =3D 2
eva =3D 1
#6 0xc06d019a in calltrap () at /usr/src/sys/i386/i386/exception.s:140
No locals.
#7 0x00000018 in ?? ()
No symbol table info available.
#8 0x00000010 in ?? ()
No symbol table info available.
#9 0x00000010 in ?? ()
No symbol table info available.
---Type <return> to continue, or q <return> to quit---
#10 0xc1df0000 in ?? ()
No symbol table info available.
#11 0xffffffff in ?? ()
No symbol table info available.
#12 0xcbf1dc28 in ?? ()
No symbol table info available.
#13 0xcbf1dbf8 in ?? ()
No symbol table info available.
#14 0xc1df0000 in ?? ()
No symbol table info available.
#15 0xc1cd5200 in ?? ()
No symbol table info available.
#16 0xc1df0000 in ?? ()
No symbol table info available.
#17 0x00000001 in ?? ()
No symbol table info available.
#18 0x0000000c in ?? ()
No symbol table info available.
#19 0x00000002 in ?? ()
No symbol table info available.
#20 0xc05e5f12 in in6_unlink_ifa (ia=3D0x0, ifp=3D0xc1df0000)
at /usr/src/sys/netinet6/in6.c:1157
oia =3D (struct in6_ifaddr *) 0xc1df0000
---Type <return> to continue, or q <return> to quit---
#21 0xc05e615d in in6_purgeaddr (ifa=3D0xc1df0000)
at /usr/src/sys/netinet6/in6.c:1146
ifp =3D (struct ifnet *) 0xc0751060
#22 0xc06019bf in nd6_timer (ignored_arg=3D0x0)
at /usr/src/sys/netinet6/nd6.c:562
regen =3D 0
ln =3D (struct llinfo_nd6 *) 0xc1d7e440
dr =3D (struct nd_defrouter *) 0x0
pr =3D (struct nd_prefix *) 0x0
ia6 =3D (struct in6_ifaddr *) 0xc1df0000
nia6 =3D (struct in6_ifaddr *) 0xc1d7e440
#23 0xc052ab55 in softclock (dummy=3D0x0) at
/usr/src/sys/kern/kern_timeout.c:259
c_func =3D (void (*)(void *)) 0xc0601880 <nd6_timer>
c_arg =3D (void *) 0x0
c_flags =3D 6
c =3D (struct callout *) 0x0
bucket =3D (struct callout_tailq *) 0xc688c460
steps =3D 6
depth =3D 4
mpcalls =3D 1
gcalls =3D 3
wakeup_cookie =3D 6
#24 0xc0502229 in ithread_loop (arg=3D0xc18f8580)
---Type <return> to continue, or q <return> to quit---
at /usr/src/sys/kern/kern_intr.c:547
ih =3D (struct intrhand *) 0xc18f3380
p =3D (struct proc *) 0xc1901540
count =3D 0
warming =3D 5000
warned =3D 0
#25 0xc0500f82 in fork_exit (callout=3D0xc0502170 <ithread_loop>, arg=3D0x0=
,
frame=3D0x0) at /usr/src/sys/kern/kern_fork.c:807
p =3D (struct proc *) 0xc1901540
#26 0xc06d01fc in fork_trampoline () at
/usr/src/sys/i386/i386/exception.s:209
No locals.
----
Please don't hesitate to ask for any additional information you might
need.
Thank you!
Regards,
Andreas Kohn
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