Bird 2.0.0 -- unknown filter instructions

Jan Maria Matejka jan.matejka at
Sun Dec 17 22:21:12 CET 2017


On 12/16/2017 04:10 PM, Luis Ressel wrote:
> I've been experimenting with bird 2.0.0 for a few days now. Apart from
> the memory leak (which Ondrej's patch appears to fix), the most serious
> issue I've run into is a spurious bird crash caused by the filter code.
> Twice so far, bird died when I ran 'birdc configure', with the messages
> "<BUG> Unknown instruction 26912" and "<BUG> Unknown instruction 0",
> respectively.
> I haven't been able to reliably reproduce these crashes, though. If
> someone has an idea how to do this, or at least how to narrow down
> which part of my lengthy filter config is causing it, that'd be much
> appreciated!
This seems to be some bad memory access. Please, if you can, send me
your binary, config and coredump, off-list please as it may contain
sensitive data.

There is no code setting these instruction codes intentionally.


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