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Re: Oops on 2.4.13 w/ ext3-2.4-0.9.13-2413


Thanks for the response - I only have a copy of this Oops, however
I will be sure to capture more today and post them as soon as I
have them..  

This Oops happened when copying a file over the top of another file
(overwriting an old file)..  I'll post them as I get them..


Paul W.

On Wed, 14 Nov 2001, Stephen C. Tweedie wrote:

> Hi,
> On Tue, Nov 13, 2001 at 04:41:36PM -0800, Paul White wrote:
> > We have about 20 - 30 embedded machines running Linux 2.4.13, which the
> > ext3-2.4-0.9.13-2413 patch applied.  These are PowerPC 7410 based systems.
> > 
> > I am getting reports of Oops happening either during removes (rm's), or
> > coppies (cp's).  Most reports state that issuing the same command once the
> > system boots back up, does not cause it to crash.  I guess its something
> > else leading up to the crash.
> Is it always the same oops?
> > Btw: Could anyone tell me what the warning line below means?  Thanks..
> > >>NIP; c00803f4 <journal_check_used_features+28/7c>   <=====
> > Trace; c0190000 <Unused_offset+7894/1c258>
> > Trace; c007e2d8 <journal_revoke+40/358>
> > Trace; c006be04 <ext3_forget+f4/184>
> > Trace; c006ed18 <ext3_free_branches+11c/288>
> > Trace; c006f1c0 <ext3_truncate+33c/4c0>
> > Trace; c0025424 <vmtruncate+148/160>
> This is _really_ weird.  
> That is an enormously simple function, which gets called all the time
> to check journal capabilities when we are about to write a revoke
> record into a journal.  That happens any time we delete any metadata,
> so both truncating a file or overwriting an old file with new data
> will go down this path, every time.
> The function only tests a few simple data structures in memory, so by
> the time it gets called, the damage must already have been done.
> If we could see some of the other oopses, it would help in determining
> any pattern here.
> Thanks,
>  Stephen

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