Date: Fri, 23 Mar 2001 10:30:02 -0800 (PST) From: Soren Schmidt <sos@freebsd.dk> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/26031: 4.3-BETA crashes on 'mount /dev/acd0c /mnt/cd' Message-ID: <200103231830.f2NIU2405802@freefall.freebsd.org>
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The following reply was made to PR kern/26031; it has been noted by GNATS.
From: Soren Schmidt <sos@freebsd.dk>
To: davidt@yadt.co.uk
Cc: FreeBSD-gnats-submit@FreeBSD.ORG
Subject: Re: kern/26031: 4.3-BETA crashes on 'mount /dev/acd0c /mnt/cd'
Date: Fri, 23 Mar 2001 19:20:06 +0100 (CET)
It seems davidt@yadt.co.uk wrote:
You should disable DMA on the CDROM, then get back with the
result....
>
> >Number: 26031
> >Category: kern
> >Synopsis: 4.3-BETA crashes on 'mount /dev/acd0c /mnt/cd'
> >Confidential: no
> >Severity: critical
> >Priority: medium
> >Responsible: freebsd-bugs
> >State: open
> >Quarter:
> >Keywords:
> >Date-Required:
> >Class: sw-bug
> >Submitter-Id: current-users
> >Arrival-Date: Fri Mar 23 09:20:00 PST 2001
> >Closed-Date:
> >Last-Modified:
> >Originator: David Taylor
> >Release: FreeBSD 4.3-BETA i386
> >Organization:
> >Environment:
> System: FreeBSD gattaca.yadt.co.uk 4.3-BETA FreeBSD 4.3-BETA #3: Tue Mar 6 18:39:44 GMT 2001 davidt@gattaca.yadt.co.uk:/usr/obj/usr/src/sys/GATTACA i386
>
> ad0: 32634MB <IBM-DPTA-373420> [66305/16/63] at ata0-master UDMA33
> acd0: DVD-ROM <HITACHI DVD-ROM GD-5000> at ata1-master using WDMA2
> acd1: CD-RW <SONY CD-RW CRX140E> at ata1-slave using UDMA33
>
> Dell Dimension XPS T-800r PIII-800, 256Mb RAM...
>
> I'm not sure what else is relevant...
> >Description:
>
> The following command works fine, so I know the CD-ROM drive/CD/etc are OK
> mount -t cd9660 /dev/acd0c /mnt/cd
>
> However,
> mount /dev/acd0c /mnt/cd # Note: no -t cd9660
> causes the following panic:
>
> IdlePTD 3657728
> initial pcb at 2e2a00
> panicstr: vm_fault: fault on nofault entry, addr: c7c11000
> panic messages:
> ---
> panic: vm_fault: fault on nofault entry, addr: c7c11000
>
> #0 dumpsys () at /usr/src/sys/kern/kern_shutdown.c:469
> #1 0xc014af55 in boot (howto=256) at /usr/src/sys/kern/kern_shutdown.c:309
> #2 0xc014b2ed in panic (
> fmt=0xc027a080 "vm_fault: fault on nofault entry, addr: %lx")
> at /usr/src/sys/kern/kern_shutdown.c:556
> #3 0xc01e39c6 in vm_fault (map=0xc02eb30c, vaddr=3357331456,
> fault_type=3 '\003', fault_flags=0) at /usr/src/sys/vm/vm_fault.c:240
> #4 0xc0247602 in trap_pfault (frame=0xcd718f10, usermode=0, eva=3357331456)
> at /usr/src/sys/i386/i386/trap.c:833
> #5 0xc02471ef in trap (frame={tf_fs = 16, tf_es = 16, tf_ds = -1072365552,
> tf_edi = -937635840, tf_esi = 2352, tf_ebp = -848195744,
> tf_isp = -848195780, tf_ebx = -1054105728, tf_edx = 368, tf_ecx = 304,
> tf_eax = -1058161152, tf_trapno = 12, tf_err = 2,
> tf_eip = -1071495692, tf_cs = 8, tf_eflags = 2163202,
> tf_esp = -1054105728, tf_ss = -1057923520}) at
> at /usr/src/sys/i386/i386/trap.c:443
> #6 0xc02245f4 in atapi_read (request=0xc12b9f80, length=2352)
> at machine/cpufunc.h:222
> #7 0xc02240b2 in atapi_interrupt (request=0xc12b9f80)
> at /usr/src/sys/dev/ata/atapi-all.c:385
> #8 0xc021dae1 in ata_intr (data=0xc0edbe00)
> at /usr/src/sys/dev/ata/ata-all.c:1150
>
> I've also seen:
>
> #6 0xc02245f4 in atapi_read (request=0xc148b480, length=2352)
> at machine/cpufunc.h:222
> #7 0xc02240b2 in atapi_interrupt (request=0xc148b480)
> at /usr/src/sys/dev/ata/atapi-all.c:385
> #8 0xc021dae1 in ata_intr (data=0xc0edbe00)
> at /usr/src/sys/dev/ata/ata-all.c:1150
>
> and
>
> #12 0xc02245f4 in atapi_read (request=0xc122d380, length=2352)
> at machine/cpufunc.h:222
> #13 0xc02240b2 in atapi_interrupt (request=0xc122d380)
> at /usr/src/sys/dev/ata/atapi-all.c:385
> #14 0xc021dae1 in ata_intr (data=0xc0edbe00)
> at /usr/src/sys/dev/ata/ata-all.c:1150
>
> which all seem quite similar... i've still got a few of the crashdumps
> around if anyone needs more information from them...
>
> This happens (AFAICS) on every CD I attempt to mount (audio CD, data CD,
> CD-R, CD-RW, etc)
>
> When I was originally trying to mount a CD-RW disk, I also saw messages
> like:
>
> "kernel: ata1-master: too many segments in DMA table"
>
> I'm not sure if that's because it was a CD-RW which FreeBSD didn't
> understand, or if it's related to the bug that caused the panic..
>
> 'acd0: READ_CD commmand timeout - resetting' appeared on the console each
> time after the panic, but just before the dump.
>
>
> >How-To-Repeat:
> Insert a CD into your first CD-ROM drive
> Try to do mount /dev/acd0c /mnt
> FreeBSD should then crash... although I'm sure there must be
> something unique about my environment..
> >Fix:
> >Release-Note:
> >Audit-Trail:
> >Unformatted:
>
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>
-Søren
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