netdev - Re: Flaw in "random32: update the net random state on interrupt and activity"

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Message-ID: <CA+icZUWtVaV02ypJzOv2S_fn8E6RqfUeJKBxBZAVGPVzJ6yajg@mail.gmail.com>
Date:   Fri, 8 Jan 2021 22:32:14 +0100
From:   Sedat Dilek <sedat.dilek@...il.com>
To:     Eric Dumazet <edumazet@...gle.com>
Cc:     Eric Dumazet <eric.dumazet@...il.com>,
        netdev <netdev@...r.kernel.org>
Subject: Re: Flaw in "random32: update the net random state on interrupt and activity"

On Fri, Jan 8, 2021 at 4:41 PM Eric Dumazet <edumazet@...gle.com> wrote:
>
> On Fri, Jan 8, 2021 at 2:51 PM Sedat Dilek <sedat.dilek@...il.com> wrote:
> >
> > On Fri, Jan 8, 2021 at 2:08 PM Sedat Dilek <sedat.dilek@...il.com> wrote:
> > >
> > > On Wed, Aug 12, 2020 at 6:25 PM Eric Dumazet <edumazet@...gle.com> wrote:
> > >
> > > > > Also, I tried the diff for tcp_conn_request...
> > > > > With removing the call to prandom_u32() not useful for
> > > > > prandom_u32/tracing via perf.
> > > >
> > > > I am planning to send the TCP patch once net-next is open. (probably next week)
> > >
> > > Ping.
> > >
> > > What is the status of this?
> > >
> >
> > I am attaching the updated diff against latest Linus Git.
> >
> > - Sedat -
>
> I have decided to not pursue this.
>
> skb->hash might be populated by non random data if fed from a
> problematic source/driver.
>
> Better to leave current code in place, there is no convincing argument
> to change this.

OK, Thanks for the clarification.

- Sedat -