Re: [REGRESSION] tcp/ipv4: kernel panic because of (possible) division by zero

Neal Cardwell
2016-01-11T18:47:11Z

On Sun, Jan 10, 2016 at 4:56 PM, Oleksandr Natalenko
<oleksandr@natalenko.name> wrote:
> OK, it seems the assumption about YeAH is correct. Here is stacktrace fired by
> WARN_ON_ONCE():
>
> https://gist.github.com/851cedcfca60d6120035
>
> Is there sufficient info for you to prepare upstream patch?

Great. Thanks for running that test! Yes, I think that's enough info.
We sent a proposed upstream patch here:

http://patchwork.ozlabs.org/patch/566072/
tcp_yeah: don't set ssthresh below 2

Feel free to add your "Tested-By" to the thread if you have a chance
to test that patch.

Thanks,
neal