Date: Mon, 10 Nov 2003 22:10:20 +0100 From: Pav Lucistnik <pav@oook.cz> To: freebsd-current@freebsd.org Subject: panic on mount_cd9660 Message-ID: <1068498619.757.4.camel@hood.oook.cz>
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FreeBSD hood.oook.cz 5.1-CURRENT FreeBSD 5.1-CURRENT #6: Mon Nov 10
20:26:12 CET 2003 root@hood.oook.cz:/usr/obj/usr/src/sys/PAV i386
What I did:
1) insert SVCD in the CD-ROM drive
2) play some tracks from it. note /dev/acd0t1 /dev/acd0t2 etc...
3) remove SVCD from the CD-ROM drive
4) put data CD in the CD-ROM drive
5) mount_cd9660 /dev/acd0 /mnt/cdrom
What I got:
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
(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 -10081=
89440, 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 66055, t=
f_esp =3D -1018716544, 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=3D0xc3e84000) 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=3D0xc3e84000) at /usr/src/sys/geom=
/geom_subr.c:416
416 devstat_remove_entry(pp->stat);
(kgdb) list
411 KASSERT (pp->acw =3D=3D 0, ("g_destroy_provider with acw"))=
;
412 KASSERT (pp->acw =3D=3D 0, ("g_destroy_provider with ace"))=
;
413 g_cancel_event(pp);
414 LIST_REMOVE(pp, provider);
415 gp =3D pp->geom;
416 devstat_remove_entry(pp->stat);
417 g_free(pp);
418 if ((gp->flags & G_GEOM_WITHER))
419 g_wither_geom(gp, 0);
420 }
(kgdb) print pp
$1 =3D (struct g_provider *) 0xc3e84000
(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}
--=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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