linux-kernel - [PATCH] qlcnic: fix a memory leak in qlcnic_sriov_set_guest_vlan

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Message-Id: <20250228092449.3759573-1-haoxiang_li2024@163.com>
Date: Fri, 28 Feb 2025 17:24:49 +0800
From: Haoxiang Li <haoxiang_li2024@....com>
To: shshaikh@...vell.com,
	manishc@...vell.com,
	GR-Linux-NIC-Dev@...vell.com,
	andrew+netdev@...n.ch,
	davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	rajesh.borundia@...gic.com,
	sucheta.chakraborty@...gic.com
Cc: netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Haoxiang Li <haoxiang_li2024@....com>,
	stable@...r.kernel.org
Subject: [PATCH] qlcnic: fix a memory leak in qlcnic_sriov_set_guest_vlan_mode()

Add qlcnic_sriov_free_vlans() to free the memory allocated by
qlcnic_sriov_alloc_vlans() if "sriov->allowed_vlans" fails to
be allocated.

Fixes: 91b7282b613d ("qlcnic: Support VLAN id config.")
Cc: stable@...r.kernel.org
Signed-off-by: Haoxiang Li <haoxiang_li2024@....com>
---
 drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_common.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_common.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_common.c
index f9dd50152b1e..2c01a9ad444f 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_common.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_common.c
@@ -454,8 +454,10 @@ static int qlcnic_sriov_set_guest_vlan_mode(struct qlcnic_adapter *adapter,
 
 	num_vlans = sriov->num_allowed_vlans;
 	sriov->allowed_vlans = kcalloc(num_vlans, sizeof(u16), GFP_KERNEL);
-	if (!sriov->allowed_vlans)
+	if (!sriov->allowed_vlans) {
+		qlcnic_sriov_free_vlans(adapter);
 		return -ENOMEM;
+	}
 
 	vlans = (u16 *)&cmd->rsp.arg[3];
 	for (i = 0; i < num_vlans; i++)
-- 
2.25.1