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RDMA/hns: Fix Use-After-Free of rsv_qp on HIP08

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[ Upstream commit fd8489294d ]

Currently rsv_qp is freed before ib_unregister_device() is called
on HIP08. During the time interval, users can still dereg MR and
rsv_qp will be used in this process, leading to a UAF. Move the
release of rsv_qp after calling ib_unregister_device() to fix it.

Fixes: 70f9252158 ("RDMA/hns: Use the reserved loopback QPs to free MR before destroying MPT")
Signed-off-by: wenglianfa <wenglianfa@huawei.com>
Signed-off-by: Junxian Huang <huangjunxian6@hisilicon.com>
Link: https://patch.msgid.link/20240906093444.3571619-3-huangjunxian6@hisilicon.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
wenglianfa 2024-09-06 17:34:37 +08:00 committed by Greg Kroah-Hartman
parent 85e37ac139
commit d2d9c51271
1 changed files with 3 additions and 3 deletions
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6
drivers/infiniband/hw/hns/hns_roce_hw_v2.c
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@ -2932,6 +2932,9 @@ err_llm_init_failed:
static void hns_roce_v2_exit(struct hns_roce_dev *hr_dev)
{
if (hr_dev->pci_dev->revision == PCI_REVISION_ID_HIP08)
free_mr_exit(hr_dev);
hns_roce_function_clear(hr_dev);
if (!hr_dev->is_vf)
@ -6779,9 +6782,6 @@ static void __hns_roce_hw_v2_uninit_instance(struct hnae3_handle *handle,
hr_dev->state = HNS_ROCE_DEVICE_STATE_UNINIT;
hns_roce_handle_device_err(hr_dev);
if (hr_dev->pci_dev->revision == PCI_REVISION_ID_HIP08)
free_mr_exit(hr_dev);
hns_roce_exit(hr_dev);
kfree(hr_dev->priv);
ib_dealloc_device(&hr_dev->ib_dev);