From 11aa5800ed66ed0415b7509f02881c76417d212a Mon Sep 17 00:00:00 2001 From: Eran Ben Elisha Date: Sun, 16 Sep 2018 14:45:27 +0300 Subject: net/mlx5: E-Switch, Fix out of bound access when setting vport rate The code that deals with eswitch vport bw guarantee was going beyond the eswitch vport array limit, fix that. This was pointed out by the kernel address sanitizer (KASAN). The error from KASAN log: [2018-09-15 15:04:45] BUG: KASAN: slab-out-of-bounds in mlx5_eswitch_set_vport_rate+0x8c1/0xae0 [mlx5_core] Fixes: c9497c98901c ("net/mlx5: Add support for setting VF min rate") Signed-off-by: Eran Ben Elisha Reviewed-by: Or Gerlitz Signed-off-by: Saeed Mahameed --- drivers/net/ethernet/mellanox/mlx5/core/eswitch.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/net/ethernet/mellanox/mlx5/core') diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c index 2b252cde5cc2..ea7dedc2d5ad 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c @@ -2000,7 +2000,7 @@ static u32 calculate_vports_min_rate_divider(struct mlx5_eswitch *esw) u32 max_guarantee = 0; int i; - for (i = 0; i <= esw->total_vports; i++) { + for (i = 0; i < esw->total_vports; i++) { evport = &esw->vports[i]; if (!evport->enabled || evport->info.min_rate < max_guarantee) continue; @@ -2020,7 +2020,7 @@ static int normalize_vports_min_rate(struct mlx5_eswitch *esw, u32 divider) int err; int i; - for (i = 0; i <= esw->total_vports; i++) { + for (i = 0; i < esw->total_vports; i++) { evport = &esw->vports[i]; if (!evport->enabled) continue; -- cgit v1.2.3-59-g8ed1b