6.18-stable review patch. If anyone has any objections, please let me know.
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From: Jonas Gorski jonas.gorski@gmail.com
[ Upstream commit d42bce414d1c5c0b536758466a1f63ac358e613c ]
port_fdb_dump() is supposed to only add fdb entries, but we iterate over the full ARL table, which also includes multicast entries.
So check if the entry is a multicast entry before passing it on to the callback().
Additionally, the port of those entries is a bitmask, not a port number, so any included entries would have even be for the wrong port.
Fixes: 1da6df85c6fb ("net: dsa: b53: Implement ARL add/del/dump operations") Signed-off-by: Jonas Gorski jonas.gorski@gmail.com Reviewed-by: Florian Fainelli florian.fainelli@broadcom.com Link: https://patch.msgid.link/20251217205756.172123-1-jonas.gorski@gmail.com Signed-off-by: Paolo Abeni pabeni@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/dsa/b53/b53_common.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c index 62cafced758e..7d6ec2eb7c75 100644 --- a/drivers/net/dsa/b53/b53_common.c +++ b/drivers/net/dsa/b53/b53_common.c @@ -2155,6 +2155,9 @@ static int b53_fdb_copy(int port, const struct b53_arl_entry *ent, if (!ent->is_valid) return 0;
+ if (is_multicast_ether_addr(ent->mac)) + return 0; + if (port != ent->port) return 0;