Re: [PATCH v2 1/2] nvmet: Fix use-after-free bug when a port is removed

[Max Gurtovoy]

Hi Logan,

On 7/4/2019 2:03 AM, Logan Gunthorpe wrote:
> When a port is removed through configfs, any connected controllers
> are still active and can still send commands. This causes a
> use-after-free bug which is detected by KASAN for any admin command
> that dereferences req->port (like in nvmet_execute_identify_ctrl).
>
> To fix this, disconnect all active controllers when a subsystem is
> removed from a port. This ensures there are no active controllers
> when the port is eventually removed.

so now we are enforcing controller existence with port configfs, right ? 
sounds reasonable.

Did you run your patches with other transport (RDMA/TCP/FC) ?