5.15-stable review patch. If anyone has any objections, please let me know.
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From: Junxian Huang huangjunxian6@hisilicon.com
[ Upstream commit 79d56805c5068f2bc81518043e043c3dedd1c82a ]
Fix -Wframe-larger-than issue by allocating memory for qpc struct with kzalloc() instead of using stack memory.
Fixes: 606bf89e98ef ("RDMA/hns: Refactor for hns_roce_v2_modify_qp function") Reported-by: kernel test robot lkp@intel.com Closes: https://lore.kernel.org/oe-kbuild-all/202506240032.CSgIyFct-lkp@intel.com/ Signed-off-by: Junxian Huang huangjunxian6@hisilicon.com Link: https://patch.msgid.link/20250703113905.3597124-7-huangjunxian6@hisilicon.co... Signed-off-by: Leon Romanovsky leon@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-)
diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c index e10fe47d45c1..74f48e201031 100644 --- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c @@ -5008,11 +5008,10 @@ static int hns_roce_v2_modify_qp(struct ib_qp *ibqp, { struct hns_roce_dev *hr_dev = to_hr_dev(ibqp->device); struct hns_roce_qp *hr_qp = to_hr_qp(ibqp); - struct hns_roce_v2_qp_context ctx[2]; - struct hns_roce_v2_qp_context *context = ctx; - struct hns_roce_v2_qp_context *qpc_mask = ctx + 1; + struct hns_roce_v2_qp_context *context; + struct hns_roce_v2_qp_context *qpc_mask; struct ib_device *ibdev = &hr_dev->ib_dev; - int ret; + int ret = -ENOMEM;
if (attr_mask & ~IB_QP_ATTR_STANDARD_BITS) return -EOPNOTSUPP; @@ -5023,7 +5022,11 @@ static int hns_roce_v2_modify_qp(struct ib_qp *ibqp, * we should set all bits of the relevant fields in context mask to * 0 at the same time, else set them to 0x1. */ - memset(context, 0, hr_dev->caps.qpc_sz); + context = kvzalloc(sizeof(*context), GFP_KERNEL); + qpc_mask = kvzalloc(sizeof(*qpc_mask), GFP_KERNEL); + if (!context || !qpc_mask) + goto out; + memset(qpc_mask, 0xff, hr_dev->caps.qpc_sz);
ret = hns_roce_v2_set_abs_fields(ibqp, attr, attr_mask, cur_state, @@ -5065,6 +5068,8 @@ static int hns_roce_v2_modify_qp(struct ib_qp *ibqp, clear_qp(hr_qp);
out: + kvfree(qpc_mask); + kvfree(context); return ret; }