Re: [Xen-devel] [PATCH] xen/public: Correct the definition of GNTTAB_CACHE_SOURCE_GREF

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Tue, Oct 17, 2017 at 03:11:51PM +0100, Andrew Cooper wrote:
> Discovered when running the XSA-232 PoC on a UBSAN-enabled hypervisor.
> 
>   (d79) XSA-232 PoC
>   (XEN) 
> ================================================================================
>   (XEN) UBSAN: Undefined behaviour in grant_table.c:3217:25
>   (XEN) left shift of 1 by 31 places cannot be represented in type 'int'
>   (XEN) ----[ Xen-4.10.0-rc  x86_64  debug=y   Tainted:    H ]----
> 
> Update all of the GNTTAB_CACHE_* constants to be unsigned integers.
> 
> Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

Reviewed-by: Wei Liu <wei.liu2@xxxxxxxxxx>

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