From: Leon Romanovsky leonro@mellanox.com
commit 546d30099ed204792083f043cd7e016de86016a3 upstream.
Returned value from mlx5_mr_cache_alloc() is checked to be error or real pointer. Return proper error code instead of NULL which is not checked later.
Fixes: 81713d3788d2 ("IB/mlx5: Add implicit MR support") Link: https://lore.kernel.org/r/20191029055721.7192-1-leon@kernel.org Signed-off-by: Leon Romanovsky leonro@mellanox.com Reviewed-by: Jason Gunthorpe jgg@mellanox.com Signed-off-by: Jason Gunthorpe jgg@mellanox.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/infiniband/hw/mlx5/mr.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/infiniband/hw/mlx5/mr.c +++ b/drivers/infiniband/hw/mlx5/mr.c @@ -460,7 +460,7 @@ struct mlx5_ib_mr *mlx5_mr_cache_alloc(s
if (entry < 0 || entry >= MAX_MR_CACHE_ENTRIES) { mlx5_ib_err(dev, "cache entry %d is out of range\n", entry); - return NULL; + return ERR_PTR(-EINVAL); }
ent = &cache->ent[entry];