Re: 2.6.19-rc2-mm1

Andrew Morton
2006-10-18T22:44:18Z

On Wed, 18 Oct 2006 10:58:23 -0700
Badari Pulavarty <pbadari@us.ibm.com> wrote:

> > > No. seems to be generic issue .. (happens with ext3 also) :(
> >
> > I think I may have missed a fix for ext3 ordered and journalled too
> > (I've just sent a patch to Andrew privately).
> >
> > Sorry. Can you try with ext2? Alternatively, try with ext3 or reiserfs
> > and change the line in mm/filemap.c:generic_file_buffered_write from
> >
> > status = a_ops->commit_write(file, page, offset, offset+copied);
> > to
> > status = a_ops->commit_write(file, page, offset, offset+bytes);
> >
> > and see if that solves your problem (that will result in rubbish being
> > temporarily visible, but there is a similar problem upstream anyway, so it
> > shouldn't cause other failures in your test).
>
> No. Above change didn't help either :(
>
> Thanks,
> Badari
>
> BUG: soft lockup detected on CPU#1!

We should have got an all-CPU backtrace via the fancy new trigger_all_cpu_backtrace()
thing.

Is the NMI watchdog ticking over?