4.19-stable review patch. If anyone has any objections, please let me know.
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From: Leon Romanovsky leonro@mellanox.com
[ Upstream commit e54b6a3bcd1ec972b25a164bdf495d9e7120b107 ]
Add missing check for failure of cm_init_av_by_path
Fixes: e1444b5a163e ("IB/cm: Fix automatic path migration support") Reported-by: Slava Shwartsman slavash@mellanox.com Reviewed-by: Parav Pandit parav@mellanox.com Signed-off-by: Leon Romanovsky leonro@mellanox.com Signed-off-by: Jason Gunthorpe jgg@mellanox.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/infiniband/core/cm.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
--- a/drivers/infiniband/core/cm.c +++ b/drivers/infiniband/core/cm.c @@ -3292,8 +3292,11 @@ static int cm_lap_handler(struct cm_work if (ret) goto unlock;
- cm_init_av_by_path(param->alternate_path, NULL, &cm_id_priv->alt_av, - cm_id_priv); + ret = cm_init_av_by_path(param->alternate_path, NULL, + &cm_id_priv->alt_av, cm_id_priv); + if (ret) + goto unlock; + cm_id_priv->id.lap_state = IB_CM_LAP_RCVD; cm_id_priv->tid = lap_msg->hdr.tid; ret = atomic_inc_and_test(&cm_id_priv->work_count);