linux-kernel - [PATCH net v2 4/6] net: dsa: microchip: ksz8: ksz8_fdb_dump: avoid extracting ghost entry from empty dynamic MAC table.

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: <20230324080608.3428714-5-o.rempel@pengutronix.de>
Date:   Fri, 24 Mar 2023 09:06:06 +0100
From:   Oleksij Rempel <o.rempel@...gutronix.de>
To:     "David S. Miller" <davem@...emloft.net>,
        Andrew Lunn <andrew@...n.ch>,
        Eric Dumazet <edumazet@...gle.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Vladimir Oltean <olteanv@...il.com>,
        Woojung Huh <woojung.huh@...rochip.com>,
        Arun Ramadoss <arun.ramadoss@...rochip.com>
Cc:     Oleksij Rempel <o.rempel@...gutronix.de>, kernel@...gutronix.de,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        UNGLinuxDriver@...rochip.com
Subject: [PATCH net v2 4/6] net: dsa: microchip: ksz8: ksz8_fdb_dump: avoid extracting ghost entry from empty dynamic MAC table.

If the dynamic MAC table is empty, we will still extract one outdated
entry. Fix it by using correct bit offset.

Fixes: 4b20a07e103f ("net: dsa: microchip: ksz8795: add support for ksz88xx chips")
Signed-off-by: Oleksij Rempel <o.rempel@...gutronix.de>
Acked-by: Arun Ramadoss <arun.ramadoss@...rochip.com>
---
 drivers/net/dsa/microchip/ksz_common.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/microchip/ksz_common.c
index c914449645ca..4929fb29ed06 100644
--- a/drivers/net/dsa/microchip/ksz_common.c
+++ b/drivers/net/dsa/microchip/ksz_common.c
@@ -408,7 +408,7 @@ static const u32 ksz8863_masks[] = {
 	[STATIC_MAC_TABLE_OVERRIDE]	= BIT(20),
 	[STATIC_MAC_TABLE_FWD_PORTS]	= GENMASK(18, 16),
 	[DYNAMIC_MAC_TABLE_ENTRIES_H]	= GENMASK(1, 0),
-	[DYNAMIC_MAC_TABLE_MAC_EMPTY]	= BIT(7),
+	[DYNAMIC_MAC_TABLE_MAC_EMPTY]	= BIT(2),
 	[DYNAMIC_MAC_TABLE_NOT_READY]	= BIT(7),
 	[DYNAMIC_MAC_TABLE_ENTRIES]	= GENMASK(31, 24),
 	[DYNAMIC_MAC_TABLE_FID]		= GENMASK(19, 16),
-- 
2.30.2