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Date: Mon, 18 Dec 2000 11:02:40 +0100 (CET)
To: "M.H.VanLeeuwen" <vanl@megsinet.net>
Cc: neilb@cse.unsw.edu.au, linux-kernel@vger.kernel.org
Subject: kernel BUG at /usr/src/linux/include/linux/nfs_fs.h:167! - reproducible
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Reply-To: trond.myklebust@fys.uio.no
From: Trond Myklebust <trond.myklebust@fys.uio.no>
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>>>>> " " == M H VanLeeuwen <vanl@megsinet.net> writes:

     > Trond, Neil I don't know if this is a loopback bug or an NFS
     > bug but since nfs_fs.h was implicated so I thought one of you
     > may be interested.
 
     > Could you let me know if you know this problem has already been
     > fixed or if you need more info.

Hi,
 
As far as I'm concerned, it's a loopback bug.

Somebody appears to be trying to copy a 'struct file' in the routine
'loop_set_fd'. This will cause havoc in any and all filesystems that
rely on f_ops->open() , f_ops->release() to maintain internal data.
In this case, it's the file's RPC authorizations, that are getting
garbage-collected from beneath you once the original struct file gets
fput() at the end of the routine.

Cheers,
  Trond
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