From mboxrd@z Thu Jan  1 00:00:00 1970
From: Rusty Russell <rusty@rustcorp.com.au>
Subject: Re: [PATCH 0/2] Fix hot-unplug: device removal while port in use
Date: Wed, 02 Mar 2011 21:38:08 +1030
Message-ID: <87aahdn5k7.fsf@rustcorp.com.au>
References: <cover.1299054025.git.amit.shah@redhat.com>
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On Wed,  2 Mar 2011 13:53:06 +0530, Amit Shah <amit.shah@redhat.com> wrote:
> A crash was observed when a device gets removed while a port is in
> use.  When the port gets removed, we tried to free vq buffers.  The vq
> no longer exists at this stage, just ensure we don't access it.
> 
> The second patch fixes a warning where the pci region is already
> freed.  I'm not sure what or how the region gets freed, any clues
> there will be helpful.

Put a printk and WARN_ON() in the pci region freeing code, look through
the backtraces?

Rusty.