The reg_create() can fail. Check for errors before dereferencing it.
Fixes: dd1b913fb0d0 ("RDMA/mlx5: Cache all user cacheable mkeys on dereg MR flow")
Signed-off-by: Dan Carpenter <error27@xxxxxxxxx>
---
drivers/infiniband/hw/mlx5/mr.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/infiniband/hw/mlx5/mr.c b/drivers/infiniband/hw/mlx5/mr.c
index c396b942d0c8..2feab0818a76 100644
--- a/drivers/infiniband/hw/mlx5/mr.c
+++ b/drivers/infiniband/hw/mlx5/mr.c
@@ -1164,6 +1164,8 @@ static struct mlx5_ib_mr *alloc_cacheable_mr(struct ib_pd *pd,
mutex_lock(&dev->slow_path_mutex);
mr = reg_create(pd, umem, iova, access_flags, page_size, false);
mutex_unlock(&dev->slow_path_mutex);
+ if (IS_ERR(mr))
+ return mr;
mr->mmkey.rb_key = rb_key;
return mr;
}
--
2.35.1
