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RDMA/hns: Fix undifined behavior caused by invalid max_sge

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[ Upstream commit 36397b9073 ]

If max_sge has been set to 0, roundup_pow_of_two() in
set_srq_basic_param() may have undefined behavior.

Fixes: 9dd052474a ("RDMA/hns: Allocate one more recv SGE for HIP08")
Signed-off-by: Chengchang Tang <tangchengchang@huawei.com>
Signed-off-by: Junxian Huang <huangjunxian6@hisilicon.com>
Link: https://lore.kernel.org/r/20240710133705.896445-7-huangjunxian6@hisilicon.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Chengchang Tang 2024-07-10 21:37:03 +08:00 committed by Greg Kroah-Hartman
parent b47c078787
commit 7bf1e00d95
1 changed files with 1 additions and 1 deletions
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2
drivers/infiniband/hw/hns/hns_roce_srq.c
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@ -296,7 +296,7 @@ static int set_srq_basic_param(struct hns_roce_srq *srq,
max_sge = proc_srq_sge(hr_dev, srq, !!udata);
if (attr->max_wr > hr_dev->caps.max_srq_wrs ||
attr->max_sge > max_sge) {
attr->max_sge > max_sge || !attr->max_sge) {
ibdev_err(&hr_dev->ib_dev,
"invalid SRQ attr, depth = %u, sge = %u.\n",
attr->max_wr, attr->max_sge);