first (?) bird 3.0.0 bug report

[Maria Matejka]

Hello, Radu! 

We apparently missed this case in our test scenarios, so we'll add one and check if it reproduces. We'll ask for more info if we need it.

Congratulations to the first BIRD 3 bugreport and thanks for it!

Maria


On 18 December 2024 14:27:44 CET, Radu Anghel via Bird-users <bird-users at network.cz> wrote:
>Hi,
>
>Using a slightly modified version of the config from the 2.15.1 (just some {} inside case structures), but probably unrelated.
>
>If bird gets killed/not shut down properly and routes remain in the kernel then bird 3.0.0 is unable to restart and just segfaults when trying to refresh kernel routes.
>
>I can reproduce it by just kill -9 bird && restarting bird.
>
>daemon.debug bird: KERNEL6.ipv6: route refresh begin: rr 1 set 1 valid 0 pruning 0 pruned 0
>
>kern.info kernel: [75645.964935] bird[4162]: segfault at 0 ip 000000000045d47b sp 00007ffcb9f9f2c0 error 4 in bird[403000+a8000] likely on CPU 1 (core 0, socket 1)
>
>kern.info kernel: [75645.970115] Code: 5d 41 5c 41 5d 41 5e 41 5f c3 55 53 48 89 fb 48 83 ec 38 80 bb 79 02 00 00 04 48 8b 7f 30 75 46 48 89 d5 31 d2 e8 63 a4 ff ff <83> 38 00 49 89 c0 75 07 31 c0 e9 9d 00 00 00 48 8b 40 10 48 8d 7b
>
>The kernel protocol config is:
>
>protocol kernel KERNEL6 {
>    debug { events, states };
>    scan time 3600;
>
>    merge paths on;
>
>    metric 0;
>    ipv6 {
>        import filter KERNEL_IN;
>        export filter KERNEL_OUT;
>    };
>}
>
>Cheers,
>
>R
>

-- 
Maria Matejka (she/her) | BIRD Team Leader | CZ.NIC, z.s.p.o.
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