nfs through nullfs

Suleiman Souhlal ssouhlal at FreeBSD.org
Wed Aug 31 11:48:05 GMT 2005


Hi,

On Aug 31, 2005, at 12:12 PM, Matthias Andree wrote:

> Kris Kennaway <kris at obsecurity.org> writes:
>
>
>> On Tue, Aug 30, 2005 at 02:44:35PM +0200, Jeremie Le Hen wrote:
>>
>>>> Subject says it all.
>>>>
>>>> mount a ext2 file system, use it as basis for a nullfs mount ->  
>>>> panic.
>>>>
>>>
>>> Mount a NFS filesystem, use it as basis for nullfs mount -> panic.
>>>
>>
>> Please provide details.
>>
>
> OK, to reproduce, three steps apart from having an ext2 file system
> (the ext2 FS is clean according to e2fsck)
>
> mount_ext2fs /dev/ad0s5 /linux
> mount_nullfs /linux /mnt
> umount /mnt                    -> panic, "locking against myself"
>
> backtrace in the kernel debugger, copied manually:

Can you try the patch at http://people.freebsd.org/~ssouhlal/testing/ 
null_vnops.c-20050831.diff ?

Bye,
--
Suleiman Souhlal     | ssouhlal at vt.edu
The FreeBSD Project  | ssouhlal at FreeBSD.org



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