4.19-stable review patch. If anyone has any objections, please let me know.
------------------
From: Leon Romanovsky <leonro@xxxxxxxxxxxx>
[ 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@xxxxxxxxxxxx>
Reviewed-by: Parav Pandit <parav@xxxxxxxxxxxx>
Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxxxx>
Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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);
