linux-kernel - Re: [block IO crash] Re: 2.6.39-rc5-git2 boot crashs

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Message-ID: <20110504123753.GA8646@elte.hu>
Date:	Wed, 4 May 2011 14:37:53 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Jens Axboe <axboe@...nel.dk>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Pekka Enberg <penberg@...helsinki.fi>
Cc:	werner <w.landgraf@...ru>, "H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [block IO crash] Re: 2.6.39-rc5-git2 boot crashs


* Ingo Molnar <mingo@...e.hu> wrote:

> 
> * Ingo Molnar <mingo@...e.hu> wrote:
> 
> > diff --git a/mm/slub.c b/mm/slub.c
> > index 94d2a33..27bc3be 100644
> > --- a/mm/slub.c
> > +++ b/mm/slub.c
> > @@ -30,6 +30,8 @@
> >  
> >  #include <trace/events/kmem.h>
> >  
> > +#undef CONFIG_CMPXCHG_LOCAL
> > +
> >  /*
> >   * Lock order:
> >   *   1. slab_lock(page)
> 
> This seems rock solid after half an hour of testing. I'll keep it running 
> longer, i still have no good data for how frequently the crashes are occuring.

It's still rock solid after 2 hours: neither crashes nor IO/IRQ timeouts are 
occuring.

Thanks,

	Ingo
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