From: Christoph Hellwig <hch@infradead.org>
To: Andrew Morton <akpm@osdl.org>
Cc: "Justin T. Gibbs" <gibbs@scsiguy.com>, linux-scsi@vger.kernel.org
Subject: Re: aic7xxx deadlock in 2.6.0-test10
Date: Mon, 24 Nov 2003 08:13:19 +0000 [thread overview]
Message-ID: <20031124081319.A29562@infradead.org> (raw)
In-Reply-To: <20031123230853.0bc8defb.akpm@osdl.org>; from akpm@osdl.org on Sun, Nov 23, 2003 at 11:08:53PM -0800
On Sun, Nov 23, 2003 at 11:08:53PM -0800, Andrew Morton wrote:
> ahc_linux_register_host() is calling ahc_linux_initialize_scsi_bus() under
> ahc_lock(ahc, &s). But scsi_report_bus_reset() is taking host->host_lock
> inside shost_for_each_device(), and that is the same (already held) lock.
>
>
> This patch gets things going again of course. Could someone please take a
> look at fixing this for real?
>
> I'm not sure why this has suddenly started happening actually.
jejb just posted another fix for it on linux-scsi, but in fact your fix
looks better to me, ahc_initialize doesn't need the host_lock because
ahc can't be reached from an other thread yet.
next prev parent reply other threads:[~2003-11-24 8:13 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-11-24 7:08 aic7xxx deadlock in 2.6.0-test10 Andrew Morton
2003-11-24 8:13 ` Christoph Hellwig [this message]
2003-11-24 15:08 ` James Bottomley
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