Date: Sat, 21 Aug 2004 15:30:50 +0200 From: Andreas Kohn <andreas.kohn@gmx.net> To: current@freebsd.org Subject: PANIC: bad pte Message-ID: <1093095050.909.10.camel@klamath.ankon.de.eu.org>
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Hi,
i got a "bad pte" panic today. Happened when trying to join an empty IRC
channel with xchat.
After core dump and reboot, fsck got a signal 4 (no core available for
that). I fixed the system with a FreeSBIE cd (freesbie fsck to check /,
then mount / ro to get fstab, and check remaining filesystems with a
working copy of fsck in /usr/obj)
Backtrace follows. I hope someone can see anything from that. I have a
core dump available.
FreeBSD klamath.ankon.de.eu.org 6.0-CURRENT FreeBSD 6.0-CURRENT #11: Wed
Aug 18 13:44:19 CEST 2004 =20
root@klamath.ankon.de.eu.org:/usr/obj/usr/src/sys/KLAMATH i386
(sources from ~3hours earlier IIRC)
Thank you.
Best Regards,
Andreas
---8<---
panic: bad pte
Uptime: 2d16h19m30s
Dumping 511 MB
16 32 48 64 80 96 112 128 144 160 176 192 208 224 240 256 272 288 304
320 336
3 =
=20
52 368 384 400 416 432 448 464 480 496
---
#0 doadump () at pcpu.h:159
159 pcpu.h: No such file or directory.
in pcpu.h
doadump () at pcpu.h:159
159 in pcpu.h
(kgdb) where
#0 doadump () at pcpu.h:159
#1 0xc04f6641 in boot (howto=3D260) at
/usr/src/sys/kern/kern_shutdown.c:396
#2 0xc04f68fd in panic (fmt=3D0xc06c2a29 "bad pte")
at /usr/src/sys/kern/kern_shutdown.c:558
#3 0xc066ffd5 in pmap_remove_pages (pmap=3D0xc3101ed0, sva=3D0,
eva=3D3217031168)
at /usr/src/sys/i386/i386/pmap.c:2580
#4 0xc04ddef9 in exit1 (td=3D0xc21f8b00, rv=3D256) at vm_map.h:252
#5 0xc04dd8f4 in sys_exit (td=3D0xc21f8b00, uap=3D0x0)
at /usr/src/sys/kern/kern_exit.c:94
#6 0xc0672e77 in syscall (frame=3D
{tf_fs =3D 47, tf_es =3D 47, tf_ds =3D 47, tf_edi =3D -1077942324, tf=
_esi
=3D 0,
tf_ =
=20
ebp =3D -1077942776, tf_isp =3D -624206476, tf_ebx =3D 1, tf_edx =3D 2057,
tf_ecx =3D 2,
t =
=20
f_eax =3D 1, tf_trapno =3D 12, tf_err =3D 2, tf_eip =3D 135243691, tf_cs =
=3D 31,
tf_eflags =
=20
=3D 658, tf_esp =3D -1077942804, tf_ss =3D 47})
at /usr/src/sys/i386/i386/trap.c:1004
#7 0xc0665d7f in Xint0x80_syscall () at
/usr/src/sys/i386/i386/exception.s:201
#8 0x0000002f in ?? ()
#9 0x0000002f in ?? ()
#10 0x0000002f in ?? ()
#11 0xbfbfe7cc in ?? ()
#12 0x00000000 in ?? ()
#13 0xbfbfe608 in ?? ()
#14 0xdacb5d74 in ?? ()
---Type <return> to continue, or q <return> to quit--- =20
#15 0x00000001 in ?? ()
#16 0x00000809 in ?? ()
#17 0x00000002 in ?? ()
#18 0x00000001 in ?? ()
#19 0x0000000c in ?? ()
#20 0x00000002 in ?? ()
#21 0x080fa7ab in ?? ()
#22 0x0000001f in ?? ()
#23 0x00000292 in ?? ()
#24 0xbfbfe5ec in ?? ()
#25 0x0000002f in ?? ()
#26 0x00000000 in ?? ()
#27 0x00000000 in ?? ()
#28 0x00000000 in ?? ()
#29 0x00000000 in ?? ()
#30 0x140d4000 in ?? ()
#31 0xc1d809a0 in ?? ()
#32 0xc1e4cc80 in ?? ()
#33 0xdacb5cb0 in ?? ()
#34 0xdacb5c98 in ?? ()
#35 0xc21f8b00 in ?? ()
#36 0xc05068fb in sched_switch (td=3D0x1, newtd=3D0xbfbfe7cc)
at /usr/src/sys/kern/sched_ule.c:1207
Previous frame inner to this frame (corrupt stack?)
(kgdb) bt full
#0 doadump () at pcpu.h:159
No locals.
#1 0xc04f6641 in boot (howto=3D260) at
/usr/src/sys/kern/kern_shutdown.c:396
first_buf_printf =3D 1
#2 0xc04f68fd in panic (fmt=3D0xc06c2a29 "bad pte")
at /usr/src/sys/kern/kern_shutdown.c:558
td =3D (struct thread *) 0xc21f8b00
bootopt =3D 260
newpanic =3D 0
ap =3D 0xc21f8b00 ""
buf =3D "bad pte", '\0' <repeats 248 times>
#3 0xc066ffd5 in pmap_remove_pages (pmap=3D0xc3101ed0, sva=3D0,
eva=3D3217031168)
at /usr/src/sys/i386/i386/pmap.c:2580
pte =3D (pt_entry_t *) 0xbfc200b0
tpte =3D 0
m =3D 0xc1c026b8
pv =3D 0xd2bcbab0
npv =3D 0xbfc200b0
#4 0xc04ddef9 in exit1 (td=3D0xc21f8b00, rv=3D256) at vm_map.h:252
new_switchtime =3D {sec =3D 1258832036, frac =3D 3260380928}
p =3D (struct proc *) 0xc2557700
nq =3D (struct proc *) 0xc04f79b2
q =3D (struct proc *) 0xc3101e10
---Type <return> to continue, or q <return> to quit---
tp =3D (struct tty *) 0xc1fcb000
ttyvp =3D (struct vnode *) 0xc1fcb000
vm =3D (struct vmspace *) 0xc3101e10
vtmp =3D (struct vnode *) 0xc3101e10
tracevp =3D (struct vnode *) 0xc3101e10
tracecred =3D (struct ucred *) 0xc1fcb000
plim =3D (struct plimit *) 0xc3101e10
refcnt =3D 0
#5 0xc04dd8f4 in sys_exit (td=3D0xc21f8b00, uap=3D0x0)
at /usr/src/sys/kern/kern_exit.c:94
No locals.
#6 0xc0672e77 in syscall (frame=3D
{tf_fs =3D 47, tf_es =3D 47, tf_ds =3D 47, tf_edi =3D -1077942324, tf=
_esi
=3D 0, tf_ebp =3D -1077942776, tf_isp =3D -624206476, tf_ebx =3D 1, tf_edx =
=3D
2057, tf_ecx =3D 2, tf_eax =3D 1, tf_trapno =3D 12, tf_err =3D 2, tf_eip =
=3D
135243691, tf_cs =3D 31, tf_eflags =3D 658, tf_esp =3D -1077942804, tf_ss =
=3D
47})
at /usr/src/sys/i386/i386/trap.c:1004
params =3D 0xbfbfe5f0---Can't read userspace from dump, or kernel
process---
(kgdb) frame 3
#3 0xc066ffd5 in pmap_remove_pages (pmap=3D0xc3101ed0, sva=3D0,
eva=3D3217031168)
at /usr/src/sys/i386/i386/pmap.c:2580
2580 panic("bad pte");
(kgdb) p *pte
---Can't read userspace from dump, or kernel process---
(kgdb) info locals
pte =3D (pt_entry_t *) 0xbfc200b0
tpte =3D 0
m =3D 0xc1c026b8
pv =3D 0xd2bcbab0
npv =3D 0xbfc200b0
(kgdb) p pte
$1 =3D (pt_entry_t *) 0xbfc200b0
(kgdb) p *pte
---Can't read userspace from dump, or kernel process---
(kgdb)=20
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