[Ovmsdev] MDNS crash

[Mark Webb-Johnson]

It seems that mdns_free is being called, while mdns_free is running…

It is trivial to fix it in the timer deletion code, but that just delays the problem until a bit later (the hostname free).

I am looking at this now.

Regards, Mark.

> On 19 Mar 2018, at 9:40 AM, Stephen Casner <casner at acm.org> wrote:
> 
> On Sun, 18 Mar 2018, Michael Balzer wrote:
> 
>> From a first look at the mdns code in your backtrace, I would guess
>> that's a double free() for the timer, it seems the timer_handle
>> never gets NULLed.
> 
> That may be a bug (deficiency) in the esp-idf mDNS code.
> 
> Perhaps I hit it because OvmsMDNS::StopMDNS was called without
> everything coming up correctly first?
> 
>                                                        -- Steve
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