lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20240318132948.3624333-3-shaojijie@huawei.com>
Date: Mon, 18 Mar 2024 21:29:47 +0800
From: Jijie Shao <shaojijie@...wei.com>
To: <yisen.zhuang@...wei.com>, <salil.mehta@...wei.com>,
	<davem@...emloft.net>, <edumazet@...gle.com>, <kuba@...nel.org>,
	<pabeni@...hat.com>, <michal.kubiak@...el.com>, <rkannoth@...vell.com>
CC: <shenjian15@...wei.com>, <wangjie125@...wei.com>,
	<liuyonglong@...wei.com>, <shaojijie@...wei.com>, <netdev@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
Subject: [PATCH V3 net 2/3] net: hns3: fix kernel crash when devlink reload during pf initialization

From: Yonglong Liu <liuyonglong@...wei.com>

The devlink reload process will access the hardware resources,
but the register operation is done before the hardware is initialized.
so, if process the devlink reload during initialization, may lead to kernel
crash. This patch fixes this by checking whether the NIC is initialized.

Fixes: b741269b2759 ("net: hns3: add support for registering devlink for PF")
Signed-off-by: Yonglong Liu <liuyonglong@...wei.com>
Signed-off-by: Jijie Shao <shaojijie@...wei.com>
---
 drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_devlink.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_devlink.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_devlink.c
index 9a939c0b217f..80db4f7b05f6 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_devlink.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_devlink.c
@@ -40,8 +40,9 @@ static int hclge_devlink_reload_down(struct devlink *devlink, bool netns_change,
 	struct pci_dev *pdev = hdev->pdev;
 	int ret;
 
-	if (test_bit(HCLGE_STATE_RST_HANDLING, &hdev->state)) {
-		dev_err(&pdev->dev, "reset is handling\n");
+	if (test_bit(HCLGE_STATE_RST_HANDLING, &hdev->state) ||
+	    !test_bit(HCLGE_STATE_NIC_REGISTERED, &hdev->state)) {
+		dev_err(&pdev->dev, "reset is handling or driver removed\n");
 		return -EBUSY;
 	}
 
-- 
2.30.0


Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ