xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

net/mlx5: Don't use already freed action pointer

Browse Source 
[ Upstream commit 80b2bd737d0e833e6a2b77e482e5a714a79c86a4 ]

The call to mlx5dr_action_destroy() releases "action" memory. That
pointer is set to miss_action later and generates the following smatch
error:

 drivers/net/ethernet/mellanox/mlx5/core/steering/fs_dr.c:53 set_miss_action()
 warn: 'action' was already freed.

Make sure that the pointer is always valid by setting NULL after destroy.

Fixes: 6a48faeeca ("net/mlx5: Add direct rule fs_cmd implementation")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Leon Romanovsky
2022-05-24 15:59:27 +03:00
committed by Greg Kroah-Hartman
parent bf2af9b243
commit ea5edd015f
1 changed files with 4 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/net/ethernet/mellanox/mlx5/core/steering/fs_dr.c
View File

@@ -43,11 +43,10 @@ static int set_miss_action(struct mlx5_flow_root_namespace *ns,
err = mlx5dr_table_set_miss_action(ft->fs_dr_table.dr_table, action); err = mlx5dr_table_set_miss_action(ft->fs_dr_table.dr_table, action);
if (err && action) { if (err && action) {
err = mlx5dr_action_destroy(action); err = mlx5dr_action_destroy(action);
if (err) { if (err)
mlx5_core_err(ns->dev,
"Failed to destroy action (%d)\n", err);
action = NULL; action = NULL;
mlx5_core_err(ns->dev, "Failed to destroy action (%d)\n",
err);
}
} }
ft->fs_dr_table.miss_action = action; ft->fs_dr_table.miss_action = action;
if (old_miss_action) { if (old_miss_action) {