From: Vlad Buslov <vla...@mellanox.com>
Date: Wed, 10 Jul 2019 20:12:29 +0300
> After recent refactoring of block offlads infrastructure, indr_dev->block
> pointer is dereferenced before it is verified to be non-NULL. Example stack
> trace where this behavior leads to NULL-pointer dereference error when
> creating vxlan dev on system with mlx5 NIC with offloads enabled:
...
> Introduce new function tcf_block_non_null_shared() that verifies block
> pointer before dereferencing it to obtain index. Use the function in
> tc_indr_block_ing_cmd() to prevent NULL pointer dereference.
>
> Fixes: 955bcb6ea0df ("drivers: net: use flow block API")
> Signed-off-by: Vlad Buslov <vla...@mellanox.com>
Applied.
