Date: Sun, 12 Nov 2000 13:37:28 +0100 From: Thomas Seck <t.seck@ndh.net> To: Mamoru Iwaki <iwaki@bc.niigata-u.ac.jp> Cc: freebsd-stable@freebsd.org Subject: Re: mount operation causes my 4.2-BETA system down Message-ID: <20001112133728.A355@basildon.homerun> In-Reply-To: <20001112075719.65.qmail@pikachu.bsp.bc.niigata-u.ac.jp>; from iwaki@bc.niigata-u.ac.jp on So , Nov 12, 2000 at 04:57:18pm %2B0900 References: <20001112075719.65.qmail@pikachu.bsp.bc.niigata-u.ac.jp>
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On So , Nov 12, 2000 at 04:57:18pm +0900, Mamoru Iwaki wrote:
> Trying to mount an audio CD from ATAPI, I met system down on
> 4.2-BETA.
>
> % mount -r /dev/racd0c /mnt
>
> This operation maybe nonsense, but the system should not be in
> panic.
>
> My system is as follows:
>
> FreeBSD 4.2-BETA #0: Sun Nov 12 13:34:24 JST 2000
> acd0: CDROM <FX120T> at ata1-master using PIO3
I have recently reproduced this on a 4.1.1-Stable from Oct 29.
Mounting an audio cd on acd0c and acd1c (cd-r and cd-rw) without specifying
the filesystem type caused a system panic.
When you try to mount with '-t cd9660' you will receive only the
error message 'incorrect super block'.
The system panic output follows:
--------------------------------
panic: vmfault : fault on nofault entry, addr: c3dab000
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x30
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc01cfefc
stack pointer = 0x10:0xc026e6b0
frame pointer = 0x10:0xc026e6b4
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags = interrupt enabled, resume, IOPL=0
current process = idle
interrupt mask = bio
trap number = 12
panic: page fault
-------------------------------
Regards from Germany,
Thomas Seck
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