diff options
| author | Emeel Hakim <ehakim@nvidia.com> | 2022-10-30 12:19:52 +0300 |
|---|---|---|
| committer | Saeed Mahameed <saeedm@nvidia.com> | 2022-11-22 05:14:35 +0300 |
| commit | 8514e325ef016e3fdabaa015ed1adaa6e6d8722a (patch) | |
| tree | 6608cc75928d14f0bbc5c01421abe862b756ed3e /drivers | |
| parent | 94ffd6e0c7dbcffbcded79e283aefbee3499af96 (diff) | |
| download | linux-8514e325ef016e3fdabaa015ed1adaa6e6d8722a.tar.xz | |
net/mlx5e: Fix possible race condition in macsec extended packet number update routine
Currenty extended packet number (EPN) update routine is accessing
macsec object without holding the general macsec lock hence facing
a possible race condition when an EPN update occurs while updating
or deleting the SA.
Fix by holding the general macsec lock before accessing the object.
Fixes: 4411a6c0abd3 ("net/mlx5e: Support MACsec offload extended packet number (EPN)")
Signed-off-by: Emeel Hakim <ehakim@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/en_accel/macsec.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/macsec.c b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/macsec.c index 4f96c69c6cc4..3dc6c987b8da 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/macsec.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/macsec.c @@ -1536,6 +1536,8 @@ static void macsec_async_event(struct work_struct *work) async_work = container_of(work, struct mlx5e_macsec_async_work, work); macsec = async_work->macsec; + mutex_lock(&macsec->lock); + mdev = async_work->mdev; obj_id = async_work->obj_id; macsec_sa = get_macsec_tx_sa_from_obj_id(macsec, obj_id); @@ -1557,6 +1559,7 @@ static void macsec_async_event(struct work_struct *work) out_async_work: kfree(async_work); + mutex_unlock(&macsec->lock); } static int macsec_obj_change_event(struct notifier_block *nb, unsigned long event, void *data) |