Date: Mon, 10 Nov 2003 23:16:03 +0100 From: Pav Lucistnik <pav@oook.cz> To: freebsd-current@freebsd.org Subject: Re: panic on mount_cd9660 Message-ID: <1068502562.691.1.camel@hood.oook.cz> In-Reply-To: <1068498619.757.4.camel@hood.oook.cz> References: <1068498619.757.4.camel@hood.oook.cz>
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V po, 10. 11. 2003 v 22:10, Pav Lucistnik p=ED=B9e:
It's reproducable! Just play any SVCD, then replace it with data CD and
try to access it. This time I panicked it by running
cdcontrol -f /dev/acd0 info
Fatal trap 12: page fault while in kernel mode
cpuid =3D 0; apic id =3D 00
fault virtual address =3D 0x1c
fault code =3D supervisor read, page not present
instruction pointer =3D 0x8:0xc05a3073
stack pointer =3D 0x10:0xcdce6c68
frame pointer =3D 0x10:0xcdce6c80
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 2 (g_event)
trap number =3D 12
panic: page fault
cpuid =3D 0;=20
---
#0 doadump () at /usr/src/sys/kern/kern_shutdown.c:240
240 dumping++;
(kgdb) bt
#0 doadump () at /usr/src/sys/kern/kern_shutdown.c:240
#1 0xc0585991 in boot (howto=3D256) at /usr/src/sys/kern/kern_shutdown.c:3=
72
#2 0xc0585ddf in panic () at /usr/src/sys/kern/kern_shutdown.c:550
#3 0xc06f6e96 in trap_fatal (frame=3D0xcdce6c28, eva=3D0) at /usr/src/sys/=
i386/i386/trap.c:821
#4 0xc06f6b12 in trap_pfault (frame=3D0xcdce6c28, usermode=3D0, eva=3D28) =
at /usr/src/sys/i386/i386/trap.c:735
#5 0xc06f6665 in trap (frame=3D
{tf_fs =3D 24, tf_es =3D 16, tf_ds =3D 16, tf_edi =3D 0, tf_esi =3D -=
1025300736, tf_ebp =3D -842109824, tf_isp =3D -842109868, tf_ebx =3D -10252=
32416, tf_edx =3D 0, tf_ecx =3D -1065601612, tf_eax =3D 1, tf_trapno =3D 12=
, tf_err =3D 0, tf_eip =3D -1067831181, tf_cs =3D 8, tf_eflags =3D 66051, t=
f_esp =3D -1015861888, tf_ss =3D -842109800}) at /usr/src/sys/i386/i386/tra=
p.c:420
#6 0xc06e2548 in calltrap () at {standard input}:94
#7 0xc054bf48 in g_destroy_provider (pp=3D0xc2e431e0) at /usr/src/sys/geom=
/geom_subr.c:416
#8 0xc0548f25 in g_orphan_register (pp=3D0xc2e32700) at /usr/src/sys/geom/=
geom_event.c:143
#9 0xc054904c in one_event () at /usr/src/sys/geom/geom_event.c:169
#10 0xc0549275 in g_run_events () at /usr/src/sys/geom/geom_event.c:202
#11 0xc054a2a5 in g_event_procbody () at /usr/src/sys/geom/geom_kern.c:134
#12 0xc056dff0 in fork_exit (callout=3D0xc054a280 <g_event_procbody>, arg=
=3D0x0, frame=3D0x0) at /usr/src/sys/kern/kern_fork.c:793
(kgdb) up 7
#7 0xc054bf48 in g_destroy_provider (pp=3D0xc2e431e0) at /usr/src/sys/geom=
/geom_subr.c:416
416 devstat_remove_entry(pp->stat);
(kgdb) print pp->stat
$1 =3D (struct devstat *) 0x0
(kgdb) print *pp
$2 =3D {name =3D 0x0, provider =3D {le_next =3D 0x0, le_prev =3D 0x0}, geom=
=3D 0x0, consumers =3D {lh_first =3D 0x0}, acr =3D 0, acw =3D 0, ace =3D 0=
, error =3D 0, orphan =3D {tqe_next =3D 0x0, tqe_prev =3D 0x0}, index =3D 0=
,=20
mediasize =3D 0, sectorsize =3D 0, stripesize =3D 0, stripeoffset =3D 0, =
stat =3D 0x0, nstart =3D 0, nend =3D 0, flags =3D 0}
(kgdb) up
#8 0xc0548f25 in g_orphan_register (pp=3D0xc2e32700) at /usr/src/sys/geom/=
geom_event.c:143
143 g_destroy_provider(pp);
(kgdb) print *pp
$3 =3D {name =3D 0xc2da2250 "acd0", provider =3D {le_next =3D 0xc07653e0, l=
e_prev =3D 0x0}, geom =3D 0xc0765404, consumers =3D {lh_first =3D 0x0}, acr=
=3D -1015831040, acw =3D -1025385856, ace =3D -1025298920, error =3D 1,=20
orphan =3D {tqe_next =3D 0xc04925a0, tqe_prev =3D 0x0}, index =3D 0, medi=
asize =3D 3226015152, sectorsize =3D 3226015776, stripesize =3D 3268839424,=
stripeoffset =3D 0, stat =3D 0x0, nstart =3D 0, nend =3D 0, flags =3D 0}
--=20
Pav Lucistnik <pav@oook.cz>
What do we know about love? Love is like a pear. Pear is sweet and have
a specific shape. Try to exactly define the shape of a pear.
-- Marigold: 50 Years Of Poetry
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