Re: unmount oops in log_do_checkpoint

[Nick Piggin]

On Tue, Jan 17, 2006 at 03:46:01AM -0800, Andrew Morton wrote:
> Nick Piggin <npiggin@xxxxxxx> wrote:
> >
> > On Mon, Jan 16, 2006 at 10:22:50PM +0100, Jan Kara wrote:
> > > > 2.6.15-git12 (and 11, not sure when it started) oops when unmounting
> > > > an ext3 filesystem. Looks like 'transaction' in log_do_checkpoint is
> > > > garbage.
> > > > 
> > 
> > [oops]
> > 
> > >   It would be useful to find out which patch cause it (by git bisect)
> > > but one obvious suspect is my merged ext3 patch to checkpoint.c. I'll
> > > investigate tomorrow.
> > > 
> > 
> > Yep, reverting jbd split checkpoint lists in -git12 fixes it. It is
> > 100% reproducible so far, and every time rebooting with a patched
> > kernel fails to result in the oops.
> > 
> 
> But that patch was in -mm for months.  How come you didn't hit the oops
> earlier?  One would almost expect some odd patch interaction, but changes
> in ext3 have been small for a long time.

Haven't run -mm on that machine for quite a while, unfortunately.

What's strange is that nobody else has hit it... 


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