linux-kernel - Re: [PATCH v3] vfio: Clear the caps->buf to NULL after free

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Message-ID: <20220630135140.2dd079c9.alex.williamson@redhat.com>
Date:   Thu, 30 Jun 2022 13:51:40 -0600
From:   Alex Williamson <alex.williamson@...hat.com>
To:     Schspa Shi <schspa@...il.com>
Cc:     cohuck@...hat.com, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] vfio: Clear the caps->buf to NULL after free

On Wed, 29 Jun 2022 10:29:48 +0800
Schspa Shi <schspa@...il.com> wrote:

> On buffer resize failure, vfio_info_cap_add() will free the buffer,
> report zero for the size, and return -ENOMEM.  As additional
> hardening, also clear the buffer pointer to prevent any chance of a
> double free.
> 
> Signed-off-by: Schspa Shi <schspa@...il.com>
> 

Applied to vfio next branch for v5.20.  Thanks,

Alex