Re: [PATCH v1 0/9] drivers: hv: dxgkrnl: Driver overview

Iouri Tarassov <iourit@xxxxxxxxxxxxxxxxxxx> · Fri, 4 Feb 2022 16:31:17 -0800

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