Subject: Re: [BUG] Linux 2.6.25-rc2 - Regression from 2.6.24-rc1-git1 softlockup while bootup on powerpc

From: Jens Axboe <[email-masked]>
Date: Tue, 19 Feb 2008 10:09:23 +0100

On Tue, Feb 19 2008, KAMEZAWA Hiroyuki wrote:
> On Tue, 19 Feb 2008 09:58:38 +0100
> Jens Axboe <[email-masked]> wrote:
> > > when I inserted printk here
> > > ==
> > > 	for (i = 0; i < nr; i++)
> > > 		func(ioc, cics[i]);
> > > 	printk("%d %lx\n", nr, index);
> > > ==
> > > index was always "1" and  nr was always 32.
> > > 
> > > So, cics[31]->key was always NULL when index=1 is passed to
> > > radix_tree_gang_lookup().
> > 
> > Hang on, it returned 32? It should not return more than 16, since that
> > is what we have room for and asked for. 
> sorry. Of course, it was 16 ;(

I expected so, otherwise we would have had far more serious problems :-)

> your patch works well. thank you.

It's committed now and posted in the relevant bugzilla as well (#9948).

-- 
Jens Axboe