linux-kernel - Re: [Patch 1/1] cciss: bug fix, prevent cciss from loading in kdump kernel

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Message-Id: <20130416150041.ef8bac2a578c8cb0e5df4c49@linux-foundation.org>
Date:	Tue, 16 Apr 2013 15:00:41 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Mike Miller <mike.miller@...com>
Cc:	Jens Axboe <axboe@...nel.dk>, LKML <linux-kernel@...r.kernel.org>,
	LKML-scsi <linux-scsi@...r.kernel.org>
Subject: Re: [Patch 1/1] cciss: bug fix, prevent cciss from loading in kdump
 kernel

On Mon, 15 Apr 2013 12:59:06 -0500 Mike Miller <mike.miller@...com> wrote:

> Patch 1/1
> 
> If hpsa is selected as the Smart Array driver cciss may try to load in the
> kdump kernel. When this happens kdump fails and a core file cannot be created.
> This patch prevents cciss from trying to load in this scenario. This effects
> primarily older Smart Array controllers.
> 

OK, this is weird.  kdump and scsi drivers are pretty darn remote things
and I've never heard of such an interaction.  Can you tell us a bit more
about how and why this happened?  Is there something special about
cciss, or can we expect similar kdump interactions with other device drivers?


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