bird 2.14 segfault

[Maria Matejka]

Hello!

Transfered to our internal issue tracker as a possible bug, gonna check 
it later. Thank you for reporting!

https://gitlab.nic.cz/labs/bird/-/issues/30

Maria

On 2024-02-08 10:26, ico wrote:
>
> I wanted to upgrade bird on router A from 1.6 to 2.14. As soon as new 
> bird started up on A, almost all of B, C, etc. started crashing. Today 
> I started to look into this. I found out I messed up the configuration 
> on router A, I didn't filter out all routes from BGP and all those 
> prefixes (IPv4 only, ~100k) were exported to OSPF. The bird on router 
> A handled it quite OK, but routers B, C, etc. segfaulted after few 
> seconds of exporting all those prefixes to kernel. And that happened 
> repeatedly after bird started again. And again..
>
> In bird's log file I found nothing. In system log were 2 lines for 
> each segfault:
>
> [Thu Feb  1 01:51:10 2024] bird[23724]: segfault at 7ffe0e092ff8 ip 
> 00007f2c4fb219a7 sp 00007ffe0e093000 error 6 in 
> libc-2.33.so[7f2c4fabe000+15e000]
> [Thu Feb  1 01:51:10 2024] Code: 48 89 d9 49 8b 7f 28 49 8b 5f 30 48 
> 39 df 73 bf 48 29 fb 4c 39 f3 49 0f 47 de 48 83 fb 14 76 a3 48 89 ce 
> 48 89 da 48 89 0c 24 <e8> f4 c8 f9 ff 48 8b 0c 24 49 89 47 28 48 01 d9 
> eb 90 0f 1f 80 00
>
> I will try again to upgrade router A without all those prefixes 
> exported to OSPF, that should work I believe.
>
> I am not good at this, but maybe someone could use this information to 
> find a bug somewhere in bird. Maybe I can help and try something with 
> the same failing setup?

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