linux-kernel - Re: WARNING: at drivers/scsi/scsi

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Message-Id: <20111108113620.de7ba0673df6aa9d8f3a2111@canb.auug.org.au>
Date:	Tue, 8 Nov 2011 11:36:20 +1100
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	James Bottomley <James.Bottomley@...senPartnership.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Bart Van Assche <bvanassche@....org>,
	linux-scsi@...r.kernel.org
Subject: Re: WARNING: at drivers/scsi/scsi_lib.c:1704

On Tue, 8 Nov 2011 11:03:00 +1100 Stephen Rothwell <sfr@...b.auug.org.au> wrote:
>
> On Mon, 07 Nov 2011 08:51:24 -0600 James Bottomley <James.Bottomley@...senPartnership.com> wrote:
> >
> > Actually, I don't think it's anything to do with this: it's Anton's
> > fault
> > 
> > commit f7c9c6bb14f3104608a3a83cadea10a6943d2804
> > Author: Anton Blanchard <anton@...ba.org>
> > Date:   Thu Nov 3 08:56:22 2011 +1100
> > 
> >     [SCSI] Fix block queue and elevator memory leak in scsi_alloc_sdev
> > 
> > Doesn't completely do the teardown.  The true fix is to do a proper
> > teardown instead of hand rolling it.  Does this fix it for you?
> 
> I don't get the WARNING any more, but now get lots of:
> 
> scsi: killing requests for dead queue

also, ipr_init takes 494857993 usecs(!) which is a bit suboptimal.  And I
get a few

INFO: rcu_sched detected stall ...

while ipr_init is in progress.

-- 
Cheers,
Stephen Rothwell                    sfr@...b.auug.org.au
http://www.canb.auug.org.au/~sfr/

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