Re: [Bug #11441] lots of 'in_atomic():1, irqs_disabled():0' with software-raid1

Rafael J. Wysocki
2008-09-03T20:00:35Z

On Wednesday, 3 of September 2008, thunder7-qWit8jRvyhVmR6Xm/wNWPw@public.gmane.org wrote:
> From: Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org>
> Date: Sat, Aug 30, 2008 at 09:50:25PM +0200
> > This message has been generated automatically as a part of a report
> > of recent regressions.
> >
> > The following bug entry is on the current list of known regressions
> > from 2.6.26. Please verify if it still should be listed and let me know
> > (either way).
> >
> >
> > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11441
> > Subject : lots of 'in_atomic():1, irqs_disabled():0' with software-raid1
> > Submitter : jurriaan <thunder7-qWit8jRvyhVmR6Xm/wNWPw@public.gmane.org>
> > Date : 2008-08-27 17:05 (4 days old)
> > References : http://marc.info/?l=linux-kernel&m=121985847724696&w=4
> > Handled-By : Jens Axboe <jens.axboe-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
> > Neil Brown <neilb-l3A5Bk7waGM@public.gmane.org>
> > Patch : http://marc.info/?l=linux-kernel&m=121998896602338&w=4
> >
> As a matter of fact, now it's even worse.
>
> On bootup, I see
>
> md4: bitmap initalized from disk: read 10/10 pages, set 6 bits
> created bitmap for device md4 (156 pages)
> unable to handle null pointer dereference
> write_page+0x179
>
> _spin_unlock_irqrestore
> bitmap_update_sb
> bitmap_create
> do_md_run
> [ snipped the rest ]
>
> when I boot 2.6.27-rc5 with the mentioned patch. I've written this
> information down by hand. I don't have a dmesg, since my root filesystem
> is on a raid1-volume, and thus I can't boot 2.6.27-rc5.
> If you need more information, please let me know.

Can you test the current -git kernel, please?

Rafael