netdev - [PATCH AUTOSEL 5.10 5/9] net: qede: Fix end of loop tests for list_for_each

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>] [day] [month] [year] [list]

Date:   Tue,  3 Aug 2021 07:44:04 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Harshvardhan Jha <harshvardhan.jha@...cle.com>,
        "David S . Miller" <davem@...emloft.net>,
        Sasha Levin <sashal@...nel.org>, netdev@...r.kernel.org
Subject: [PATCH AUTOSEL 5.10 5/9] net: qede: Fix end of loop tests for list_for_each_entry

From: Harshvardhan Jha <harshvardhan.jha@...cle.com>

[ Upstream commit 795e3d2ea68e489ee7039ac29e98bfea0e34a96c ]

The list_for_each_entry() iterator, "vlan" in this code, can never be
NULL so the warning will never be printed.

Signed-off-by: Harshvardhan Jha <harshvardhan.jha@...cle.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/ethernet/qlogic/qede/qede_filter.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/qlogic/qede/qede_filter.c b/drivers/net/ethernet/qlogic/qede/qede_filter.c
index c59b72c90293..a2e4dfb5cb44 100644
--- a/drivers/net/ethernet/qlogic/qede/qede_filter.c
+++ b/drivers/net/ethernet/qlogic/qede/qede_filter.c
@@ -831,7 +831,7 @@ int qede_configure_vlan_filters(struct qede_dev *edev)
 int qede_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid)
 {
 	struct qede_dev *edev = netdev_priv(dev);
-	struct qede_vlan *vlan = NULL;
+	struct qede_vlan *vlan;
 	int rc = 0;
 
 	DP_VERBOSE(edev, NETIF_MSG_IFDOWN, "Removing vlan 0x%04x\n", vid);
@@ -842,7 +842,7 @@ int qede_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid)
 		if (vlan->vid == vid)
 			break;
 
-	if (!vlan || (vlan->vid != vid)) {
+	if (list_entry_is_head(vlan, &edev->vlan_list, list)) {
 		DP_VERBOSE(edev, (NETIF_MSG_IFUP | NETIF_MSG_IFDOWN),
 			   "Vlan isn't configured\n");
 		goto out;
-- 
2.30.2