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Date:   Fri, 4 Feb 2022 16:31:17 -0800
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Subject: Re: [PATCH v1 0/9] drivers: hv: dxgkrnl: Driver overview
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To:     Nathan Chancellor <nathan@kernel.org>
Cc:     kys@microsoft.com, haiyangz@microsoft.com, sthemmin@microsoft.com,
        wei.liu@kernel.org, linux-hyperv@vger.kernel.org,
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References: <cover.1641937419.git.iourit@linux.microsoft.com>
 <Yd9SQxTznfHGjuDD@archlinux-ax161>
 <bd36b131-be23-6f4d-16cf-a549a6533f34@linux.microsoft.com>
 <YfCVi/TGD9Dnf9CG@dev-arch.archlinux-ax161>
From:   Iouri Tarassov <iourit@linux.microsoft.com>
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On 1/25/2022 4:27 PM, Nathan Chancellor wrote:
> Hi Iouri,
>
> On Wed, Jan 12, 2022 at 03:39:13PM -0800, Iouri Tarassov wrote:
> > 
> drivers/hv/dxgkrnl/dxgvmbus.c: In function ‘dxgvmb_send_query_alloc_residency’:
> drivers/hv/dxgkrnl/dxgvmbus.c:147:16: warning: array subscript ‘struct dxgvmbusmsg[0]’ is partly outside array bounds of ‘struct dxgvmbusmsgres[1]’ [-Warray-bounds]
>    147 |         if (msg->hdr && (char *)msg->hdr != msg->msg_on_stack)
>        |             ~~~^~~~~
> drivers/hv/dxgkrnl/dxgvmbus.c:1882:31: note: while referencing ‘msg’
>   1882 |         struct dxgvmbusmsgres msg = {.hdr = NULL};
>        |                               ^~~

Hi Nathan,

I fixed the issue with the ioctls array.

Regarding the warning above, it looks like a compiler error. I do not 
see where the out of bounds access is.
I tried GCC-11 version 11.2.0 and this warning is not there.

Thanks

Iouri