send_meta() called with NULL pointer!

[Guus Sliepen]

On Fri, Jun 21, 2013 at 10:12:22AM +0100, Chris Maciejewski wrote:

> I have now upgraded all 40 machines to tinc 1.1pre7. Overall it seems
> to be running more stable, however from time to time (once or twice a
> week) a random host will crash reporting the following in syslog:
> 
> kernel: [12032799.025692] tincd[27725]: segfault at 7fff7e86e870 ip
> 0000000000419b61 sp 00007fff7e742420 error 4 in tincd[400000+175000]
> 
> Is there any way I can help to investigate / fix this issue?

If you can run the tincd binary with debugging symbols (if you compile it
yourself it should usually have those), and enable core dumps ("ulimit -c
unlimit" or "unlimit coredumpsize" in your shell), then start tinc, it will
dump a core the next time it segfaults that can be read with gdb to produce a
backtrace. That in turn will be very useful.

-- 
Met vriendelijke groet / with kind regards,
     Guus Sliepen <guus at tinc-vpn.org>
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