Re: Re: [PATCH net] ppp: Fix a scheduling-while-atomic bug in del_chan

On Mon, Aug 7, 2017 at 10:17 AM, Cong Wang [off-list ref] wrote:

Unless I miss any other code path, pptp_exit_module() is
problematic too, I don't think it can just vfree() the whole thing.

This path should be fine, because:

1. sock holds a refcnt to module via proto->owner
2. gre_del_protocol() already waits for readers