| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.18 150/158] RDMA/hns: Add illegal hop_num judgement | Date | Tue, 18 Sep 2018 00:43:00 +0200 |
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4.18-stable review patch. If anyone has any objections, please let me know.
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From: Lijun Ou <oulijun@huawei.com>
[ Upstream commit 26f63b9c33ceda12fb9136a1d0c80e03c9ebb514 ]
When hop_num is more than three, it need to return -EINVAL. This patch fixes it.
Signed-off-by: Lijun Ou <oulijun@huawei.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- drivers/infiniband/hw/hns/hns_roce_hem.c | 3 +++ 1 file changed, 3 insertions(+)
--- a/drivers/infiniband/hw/hns/hns_roce_hem.c +++ b/drivers/infiniband/hw/hns/hns_roce_hem.c @@ -494,6 +494,9 @@ static int hns_roce_table_mhop_get(struc step_idx = 1; } else if (hop_num == HNS_ROCE_HOP_NUM_0) { step_idx = 0; + } else { + ret = -EINVAL; + goto err_dma_alloc_l1; } /* set HEM base address to hardware */
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