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Date:   Thu, 26 Oct 2017 18:54:55 -0400
From:   Boris Ostrovsky <>
To:     Juergen Gross <>,,
Subject: Re: [PATCH] xen/gntdev: avoid out of bounds access in case of partial

On 10/25/2017 12:46 PM, Boris Ostrovsky wrote:
> On 10/25/2017 11:08 AM, Juergen Gross wrote:
>> In case gntdev_mmap() succeeds only partially in mapping grant pages
>> it will leave some vital information uninitialized needed later for
>> cleanup. This will lead to an out of bounds array access when unmapping
>> the already mapped pages.
>> So just initialize the data needed for unmapping the pages a little bit
>> earlier.
>> Cc: <>
>> Reported-by: Arthur Borsboom <>
>> Signed-off-by: Juergen Gross <>
> Reviewed-by: Boris Ostrovsky <>

Applied to for-linus-4.14c.


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