first (?) bird 3.0.0 bug report

[Maria Matejka]

Hello Radu,

sorry, this was a stupid omission of a null check. Fixed in
[b6caccfd45fb639b6dd3a8d140d3c5ba4cc79311](https://gitlab.nic.cz/labs/bird/-/tree/b6caccfd45fb639b6dd3a8d140d3c5ba4cc79311).
Could you please check that it works on your side now?

Thanks, 
Maria

On Wed, Dec 18, 2024 at 02:55:19PM +0100, Maria Matejka via Bird-users wrote:

> 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!
> 
> On 18 December 2024 14:27:44 CET, Radu Anghel via Bird-users <bird-users at network.cz> wrote:
> 
> > 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;
> >     };
> > }
> > ```

-- 
Maria Matejka (she/her) | BIRD Team Leader | CZ.NIC, z.s.p.o.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://trubka.network.cz/pipermail/bird-users/attachments/20241219/25216fff/attachment.htm>