From: Yonglong Liu liuyonglong@huawei.com
mainline inclusion from mainline-v6.9 commit 35d92abfbad88cf947c010baf34b075e40566095 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9U3H2 CVE: CVE-2024-36900
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i...
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The devlink reload process will access the hardware resources, but the register operation is done before the hardware is initialized. So, processing the devlink reload during initialization may lead to kernel crash.
This patch fixes this by registering the devlink after hardware initialization. Fixes: cd6242991d2e ("net: hns3: add support for registering devlink for VF") Fixes: 93305b77ffcb ("net: hns3: fix kernel crash when devlink reload during pf initialization") Signed-off-by: Yonglong Liu liuyonglong@huawei.com Signed-off-by: Jijie Shao shaojijie@huawei.com Signed-off-by: Paolo Abeni pabeni@redhat.com Conflicts: drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c [fix context diff] Signed-off-by: Ye Bin yebin10@huawei.com --- .../net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c | 12 +++++------- .../ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c | 10 ++++------ 2 files changed, 9 insertions(+), 13 deletions(-)
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c index 608019d1d2bc..7d139bfb44cc 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c @@ -12243,14 +12243,10 @@ static int hclge_init_ae_dev(struct hnae3_ae_dev *ae_dev) if (ret) goto out;
- ret = hclge_devlink_init(hdev); - if (ret) - goto err_pci_uninit; - /* Firmware command queue initialize */ ret = hclge_comm_cmd_queue_init(hdev->pdev, &hdev->hw.hw); if (ret) - goto err_devlink_uninit; + goto err_pci_uninit;
/* Firmware command initialize */ ret = hclge_comm_cmd_init(hdev->ae_dev, &hdev->hw.hw, &hdev->fw_version, @@ -12423,6 +12419,10 @@ static int hclge_init_ae_dev(struct hnae3_ae_dev *ae_dev) dev_warn(&pdev->dev, "failed to wake on lan init, ret = %d\n", ret);
+ ret = hclge_devlink_init(hdev); + if (ret) + goto err_ptp_uninit; + hclge_state_init(hdev); hdev->last_reset_time = jiffies;
@@ -12446,8 +12446,6 @@ static int hclge_init_ae_dev(struct hnae3_ae_dev *ae_dev) pci_free_irq_vectors(pdev); err_cmd_uninit: hclge_comm_cmd_uninit(hdev->ae_dev, &hdev->hw.hw); -err_devlink_uninit: - hclge_devlink_uninit(hdev); err_pci_uninit: pcim_iounmap(pdev, hdev->hw.hw.io_base); pci_clear_master(pdev); diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c index b5738a7e260a..cdd0c1583b9e 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c @@ -2952,10 +2952,6 @@ static int hclgevf_init_hdev(struct hclgevf_dev *hdev) if (ret) return ret;
- ret = hclgevf_devlink_init(hdev); - if (ret) - goto err_devlink_init; - ret = hclge_comm_cmd_queue_init(hdev->pdev, &hdev->hw.hw); if (ret) goto err_cmd_queue_init; @@ -3050,6 +3046,10 @@ static int hclgevf_init_hdev(struct hclgevf_dev *hdev)
hclgevf_init_rxd_adv_layout(hdev);
+ ret = hclgevf_devlink_init(hdev); + if (ret) + goto err_config; + set_bit(HCLGEVF_STATE_SERVICE_INITED, &hdev->state);
hdev->last_reset_time = jiffies; @@ -3068,8 +3068,6 @@ static int hclgevf_init_hdev(struct hclgevf_dev *hdev) err_cmd_init: hclge_comm_cmd_uninit(hdev->ae_dev, &hdev->hw.hw); err_cmd_queue_init: - hclgevf_devlink_uninit(hdev); -err_devlink_init: hclgevf_pci_uninit(hdev); clear_bit(HCLGEVF_STATE_IRQ_INITED, &hdev->state); return ret;