Re: Oops with CONFIG_VMAP_STCK and bond device + virtio-net

[Cong Wang]

On Mon, Dec 5, 2016 at 3:53 PM, Laura Abbott <labbott@xxxxxxxxxx> wrote:
> This looks like an issue with CONFIG_VMAP_STACK since bond_enslave uses
> struct sockaddr from the stack and virtnet_set_mac_address calls
> sg_init_one which triggers BUG_ON(!virt_addr_valid(buf));
>
> I know there have been a lot of CONFIG_VMAP_STACK fixes around but I
> didn't find this one reported yet.

Fixed by:

commit e37e2ff350a321ad9c36b588e76f34fbba305be6
Author: Andy Lutomirski <luto@xxxxxxxxxx>
Date:   Mon Dec 5 18:10:58 2016 -0800

    virtio-net: Fix DMA-from-the-stack in virtnet_set_mac_address()