linux-kernel - Re: [PATCH 1/3] Drivers: hv: balloon: don't crash when memory is added in non-sorted order

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Date:	Sat, 30 Apr 2016 14:02:42 -0700
From:	Greg KH <gregkh@...uxfoundation.org>
To:	"K. Y. Srinivasan" <kys@...rosoft.com>
Cc:	linux-kernel@...r.kernel.org, devel@...uxdriverproject.org,
	olaf@...fle.de, apw@...onical.com, vkuznets@...hat.com,
	jasowang@...hat.com
Subject: Re: [PATCH 1/3] Drivers: hv: balloon: don't crash when memory is
 added in non-sorted order

On Fri, Apr 29, 2016 at 11:45:17AM -0700, K. Y. Srinivasan wrote:
> From: Vitaly Kuznetsov <vkuznets@...hat.com>
> 
> When we iterate through all HA regions in handle_pg_range() we have an
> assumption that all these regions are sorted in the list and the
> 'start_pfn >= has->end_pfn' check is enough to find the proper region.
> Unfortunately it's not the case with WS2016 where host can hot-add regions
> in a different order. We end up modifying the wrong HA region and crashing
> later on pages online. Modify the check to make sure we found the region
> we were searching for while iterating. Fix the same check in pfn_covered()
> as well.
> 
> Signed-off-by: Vitaly Kuznetsov <vkuznets@...hat.com>
> Signed-off-by: K. Y. Srinivasan <kys@...rosoft.com>
> ---
>  drivers/hv/hv_balloon.c |    4 ++--
>  1 files changed, 2 insertions(+), 2 deletions(-)

I only received patch 1/3 here, what happened to the other 2?

Can you resend the whole series?

thanks,

greg k-h