target/linux/generic/backport-6.1/715-29-v6.4-net-pcs-xpcs-fix-incorrect-number-of-interfaces.patch

   1 From 43fb622d91a9f408322735d2f736495c1009f575 Mon Sep 17 00:00:00 2001
   2 From: "Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>
   3 Date: Tue, 9 May 2023 12:50:04 +0100
   4 Subject: [PATCH] net: pcs: xpcs: fix incorrect number of interfaces
   5
   6 In synopsys_xpcs_compat[], the DW_XPCS_2500BASEX entry was setting
   7 the number of interfaces using the xpcs_2500basex_features array
   8 rather than xpcs_2500basex_interfaces. This causes us to overflow
   9 the array of interfaces. Fix this.
  10
  11 Fixes: f27abde3042a ("net: pcs: add 2500BASEX support for Intel mGbE controller")
  12 Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
  13 Reviewed-by: Andrew Lunn <andrew@lunn.ch>
  14 Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
  15 Signed-off-by: David S. Miller <davem@davemloft.net>
  16 ---
  17  drivers/net/pcs/pcs-xpcs.c | 2 +-
  18  1 file changed, 1 insertion(+), 1 deletion(-)
  19
  20 --- a/drivers/net/pcs/pcs-xpcs.c
  21 +++ b/drivers/net/pcs/pcs-xpcs.c
  22 @@ -1211,7 +1211,7 @@ static const struct xpcs_compat synopsys
  23         [DW_XPCS_2500BASEX] = {
  24                 .supported = xpcs_2500basex_features,
  25                 .interface = xpcs_2500basex_interfaces,
  26 -               .num_interfaces = ARRAY_SIZE(xpcs_2500basex_features),
  27 +               .num_interfaces = ARRAY_SIZE(xpcs_2500basex_interfaces),
  28                 .an_mode = DW_2500BASEX,
  29         },
  30  };