From: Dan Carpenter dan.carpenter@oracle.com
[ Upstream commit 9810c58c7051ae83e7ac326fca3daa823da6b778 ]
The lan966x->ports[] array has lan966x->num_phys_ports elements. These are assigned in lan966x_probe(). That means the > comparison should be changed to >=.
The first off by one check is harmless but the second one could lead to an out of bounds access and a crash.
Fixes: 5ccd66e01cbe ("net: lan966x: add support for interrupts from analyzer") Signed-off-by: Dan Carpenter dan.carpenter@oracle.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/microchip/lan966x/lan966x_mac.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_mac.c b/drivers/net/ethernet/microchip/lan966x/lan966x_mac.c index 2679111ef669..005e56ea5da1 100644 --- a/drivers/net/ethernet/microchip/lan966x/lan966x_mac.c +++ b/drivers/net/ethernet/microchip/lan966x/lan966x_mac.c @@ -346,7 +346,7 @@ static void lan966x_mac_irq_process(struct lan966x *lan966x, u32 row,
lan966x_mac_process_raw_entry(&raw_entries[column], mac, &vid, &dest_idx); - if (WARN_ON(dest_idx > lan966x->num_phys_ports)) + if (WARN_ON(dest_idx >= lan966x->num_phys_ports)) continue;
/* If the entry in SW is found, then there is nothing @@ -393,7 +393,7 @@ static void lan966x_mac_irq_process(struct lan966x *lan966x, u32 row,
lan966x_mac_process_raw_entry(&raw_entries[column], mac, &vid, &dest_idx); - if (WARN_ON(dest_idx > lan966x->num_phys_ports)) + if (WARN_ON(dest_idx >= lan966x->num_phys_ports)) continue;
mac_entry = lan966x_mac_alloc_entry(mac, vid, dest_idx);