From: Bob Pearson <rpearsonhpe@gmail.com>
To: Dan Carpenter <dan.carpenter@oracle.com>,
Zhu Yanjun <zyjzyj2000@gmail.com>
Cc: Doug Ledford <dledford@redhat.com>,
Jason Gunthorpe <jgg@ziepe.ca>,
linux-rdma@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: Re: [PATCH] RDMA/rxe: missing unlock on error in get_srq_wqe()
Date: Fri, 25 Jun 2021 09:32:01 -0500 [thread overview]
Message-ID: <3e04bfeb-708e-d636-bf81-82dc2076db6c@gmail.com> (raw)
In-Reply-To: <YNXUCmnPsSkPyhkm@mwanda>
On 6/25/21 8:03 AM, Dan Carpenter wrote:
> This error path needs to unlock before returning.
>
> Fixes: ec0fa2445c18 ("RDMA/rxe: Fix over copying in get_srq_wqe")
> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
> ---
> I'm sort of surprised this one wasn't caught in testing...
>
> drivers/infiniband/sw/rxe/rxe_resp.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/infiniband/sw/rxe/rxe_resp.c b/drivers/infiniband/sw/rxe/rxe_resp.c
> index 72cdb170b67b..3743dc39b60c 100644
> --- a/drivers/infiniband/sw/rxe/rxe_resp.c
> +++ b/drivers/infiniband/sw/rxe/rxe_resp.c
> @@ -314,6 +314,7 @@ static enum resp_states get_srq_wqe(struct rxe_qp *qp)
>
> /* don't trust user space data */
> if (unlikely(wqe->dma.num_sge > srq->rq.max_sge)) {
> + spin_unlock_bh(&srq->rq.consumer_lock);
> pr_warn("%s: invalid num_sge in SRQ entry\n", __func__);
> return RESPST_ERR_MALFORMED_WQE;
> }
>
This is correct. Thanks.
Bob Pearson
next prev parent reply other threads:[~2021-06-25 14:32 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-25 13:03 [PATCH] RDMA/rxe: missing unlock on error in get_srq_wqe() Dan Carpenter
2021-06-25 13:11 ` Majd Dibbiny
2021-06-25 14:32 ` Bob Pearson [this message]
2021-06-25 14:33 ` Bob Pearson
2021-06-25 15:03 ` Jason Gunthorpe
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