Re: [PATCH 00/17] v3 net generic subsystem refcount conversions

[Eric Dumazet]

On Mon, 2017-07-03 at 09:57 +0000, Reshetova, Elena wrote:

> Thank you very much for the report! This is an underflow (dec/sub from
> zero) that is reported by WARNING. 
> I guess it is unlikely that actual code underflows, so the most
> probable cause is that it attempted to do refcount_inc/add() from
> zero, but then failed. 
> However  in that case you should have seen another warning on
> refcount_inc() somewhere earlier. That one is actually the one I need
> to see to track the root cause. 
> Could you tell me how do you arrive to the below output? Boot in what
> config/etc. 
> I can try to reproduce to debug further. 

I sent this fix : 

https://patchwork.ozlabs.org/patch/783389/

Thanks.