netdev - Re: [PATCH bpf v4 00/14] sockmap/tls fixes

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Date:   Mon, 22 Jul 2019 08:46:59 -0700
From:   John Fastabend <john.fastabend@...il.com>
To:     Jakub Kicinski <jakub.kicinski@...ronome.com>,
        john.fastabend@...il.com, alexei.starovoitov@...il.com,
        daniel@...earbox.net
Cc:     edumazet@...gle.com, netdev@...r.kernel.org, bpf@...r.kernel.org,
        oss-drivers@...ronome.com
Subject: Re: [PATCH bpf v4 00/14] sockmap/tls fixes

Jakub Kicinski wrote:
> On Fri, 19 Jul 2019 10:29:13 -0700, Jakub Kicinski wrote:
> > John says:
> > 
> > Resolve a series of splats discovered by syzbot and an unhash
> > TLS issue noted by Eric Dumazet.
> 
> Sorry for the delay, this code is quite tricky. According to my testing
> TLS SW and HW should now work, I hope I didn't regress things on the
> sockmap side.

I'll run it through our CI as well but looks good to me. Thanks a lot
for getting this finished up.

> 
> This is not solving all the issues (ugh), apart from HW needing the
> unhash/shutdown treatment, as discussed we may have a sender stuck in
> wmem wait while we free context underneath. That's a "minor" UAF for
> another day..

Agreed. But this should solve most of the syzbot issues and a few
crashes we saw in testing real workloads.

Thanks,
John