error when mounting ext2 and ext3 fs

[Robert Watson]

On Sat, 2 Jul 2005, Yanjun Wu wrote:

> I have just installed the 20050624-6.0-SEBSD-i386-miniinst.
> When mounting a ext2 partition:
> -su-2.05b# mount_ext2fs /dev/ad0s8 /mnt
> -su-2.05b# ls /mnt
> the system drops into db> like this:
>
> Fatal trap 12: page fault while in kernel mode
> cpuid = 1; apic id = 01
> fault virtual address   = 0x2c
> fault code              = supervisor read, page not present
> instruction pointer     = 0x8:0xc21675b5
> stack pointer           = 0x10:0xde80999c
> frame pointer           = 0x10:0xde8099b0
> 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         = 514 (ls)
> [thread 100129]
> Stopped at      ext2_strategy+0x81:     movl    0x2c(%eax),%edx
> db>
>
> I tried for an ext3 partition, the same thing happened. Is it a bug? or 
> has it been discussed already? ( I am a complete newbie in this list.)

Yanjun Wu,

This is likely a bug in the FreeBSD version used to produce the 6.0-SEBSD 
snapshot, which dates from late last year.  I'm in the process of updating 
the SEBSD branch to the FreeBSD 6.x snapshot from May of this year that is 
the base revision for the TrustedBSD MAC branch.  I'll finish the first 
cut integration today, but it will probably take a few days to settle out. 
In the mean time, the best work-around with the SEBSD snapshot is probably 
to use FAT for shared data between FreeBSD and Linux installs.  I'll send 
out e-mail once the integration is complete.

Thanks,

Robert N M Watson
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