Re: [PATCH][V2] net: lio_core: fix potential sign-extension overflow on large shift

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On Mon, Jun 17, 2019 at 05:12:49PM +0100, Colin King wrote:
> From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
> 
> Left shifting the signed int value 1 by 31 bits has undefined behaviour
> and the shift amount oq_no can be as much as 63.  Fix this by using
> BIT_ULL(oq_no) instead.
> 
> Addresses-Coverity: ("Bad shift operation")
> Fixes: f21fb3ed364b ("Add support of Cavium Liquidio ethernet adapters")
> Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
> ---

Looks good.  Thanks!

Reviewed-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>

regards,
dan carpenter




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