Re: [PATCH rdma-next] RDMA/ucma: Protect kernel from QPN larger than declared in IBTA

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On Mon, Oct 28, 2019 at 03:44:44PM +0200, Leon Romanovsky wrote:
> From: Leon Romanovsky <leonro@xxxxxxxxxxxx>
> 
> IBTA declares QPN as 24bits, mask input to ensure that kernel
> doesn't get higher bits.
> 
> Fixes: 75216638572f ("RDMA/cma: Export rdma cm interface to userspace")
> Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxxxx>
>  * Not fully tested yet, passed sanity tests for now.
>  drivers/infiniband/core/ucma.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/infiniband/core/ucma.c b/drivers/infiniband/core/ucma.c
> index 0274e9b704be..57e68491a2fd 100644
> +++ b/drivers/infiniband/core/ucma.c
> @@ -1045,7 +1045,7 @@ static void ucma_copy_conn_param(struct rdma_cm_id *id,
>  	dst->retry_count = src->retry_count;
>  	dst->rnr_retry_count = src->rnr_retry_count;
>  	dst->srq = src->srq;

srq too?

Jason




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