Re: [Xen-devel] [PATCH] xen/pvcalls: fix unsigned less than zero error check

[Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>]

On 11/03/2017 05:01 AM, Juergen Gross wrote:
> On 03/11/17 09:42, Colin King wrote:
>> From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
>>
>> The check on bedata->ref is never true because ref is an unsigned
>> integer. Fix this by assigning signed int ret to the return of the
>> call to gnttab_claim_grant_reference so the -ve return can be checked.
>>
>> Detected by CoverityScan, CID#1460358 ("Unsigned compared against 0")
>>
>> Fixes: 219681909913 ("xen/pvcalls: connect to the backend")
>> Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
> Reviewed-by: Juergen Gross <jgross@xxxxxxxx>


Applied to for-linus-4.15.

-boris

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