bird 3.2.0 crashes after adding ASPA and running "configure"

[Maria Matejka]

Hello Christoph,

I finally managed to reproduce this, and it actually doesn't have
anything with -R, nor with ASPA directly, but it looks like a bug in
both 3.1.5 and 3.2.0, and the fix will be in upcoming 3.2.1 and 3.1.6.

You may see the WIP branch with all the boring technical details in our
gitlab: https://gitlab.nic.cz/labs/bird/-/commits/343-bad-journal-release
This link will stop working later but you'll find the commits by
searching for `#343` in the commit messages.

I have still several points on my checklist arising from your reports,
thank you so much for them. I'll get back to you as soon as I have more
progress.

Thank you and have a nice day!

Maria

On Mon, Jan 05, 2026 at 04:12:10PM +0100, Christoph via Bird-users wrote:

> Hello again,
> 
> I managed to get it to crash also on 3.2.0 without the "-R" so,
> this might be two instead of just one issue.
> Without "-R" at least it crashes only once and not in a loop.
> 
> The last log line in the trace level log before the crash:
> 2026-01-05 15:56:04.980 [0002] <BUG> Assertion 'r->cur' failed at
> lib/lockfree.c:229
> 
> 
> coredumpctl output:
>            PID: 400061 (bird)
>            UID: 103 (bird)
>            GID: 105 (bird)
>         Signal: 6 (ABRT)
>      Timestamp: Mon 2026-01-05 15:56:05 CET (8min ago)
>   Command Line: /usr/sbin/bird -f -u bird -g bird
>     Executable: /usr/sbin/bird
>  Control Group: /system.slice/bird.service
>           Unit: bird.service
>          Slice: system.slice
>        Storage: /var/lib/systemd/coredump/core.bird.103.bca60f28d7ae4991a019cc2291fdaeee.400061.1767624965000000.zst
> (present)
>   Size on Disk: 153.1M
>        Message: Process 400061 (bird) of user 103 dumped core.
> 
>                 Module libzstd.so.1 from deb libzstd-1.5.7+dfsg-1.amd64
>                 Stack trace of thread 400070:
>                 #0  0x00007fcc476e295c n/a (libc.so.6 + 0x9495c)
>                 #1  0x00007fcc4768dcc2 raise (libc.so.6 + 0x3fcc2)
>                 #2  0x00007fcc476764ac abort (libc.so.6 + 0x284ac)
>                 #3  0x0000557e4b9e84dc n/a (/usr/sbin/bird + 0x10f4dc)
>                 #4  0x0000557e4b9369ba n/a (/usr/sbin/bird + 0x5d9ba)
>                 #5  0x0000557e4b94f52b n/a (/usr/sbin/bird + 0x7652b)
>                 #6  0x0000557e4b95f911 n/a (/usr/sbin/bird + 0x86911)
>                 #7  0x0000557e4b94f95a n/a (/usr/sbin/bird + 0x7695a)
>                 #8  0x0000557e4b932956 n/a (/usr/sbin/bird + 0x59956)
>                 #9  0x0000557e4b9e581f n/a (/usr/sbin/bird + 0x10c81f)
>                 #10 0x0000557e4b932956 n/a (/usr/sbin/bird + 0x59956)
>                 #11 0x0000557e4b9e3692 n/a (/usr/sbin/bird + 0x10a692)
>                 #12 0x00007fcc476e0b7b n/a (libc.so.6 + 0x92b7b)
>                 #13 0x00007fcc4775e7b8 n/a (libc.so.6 + 0x1107b8)
> 
>                 Stack trace of thread 400061:
>                 #0  0x00007fcc476e89ee n/a (libc.so.6 + 0x9a9ee)
>                 #1  0x00007fcc476dd668 n/a (libc.so.6 + 0x8f668)
>                 #2  0x00007fcc476dd6ad n/a (libc.so.6 + 0x8f6ad)
>                 #3  0x00007fcc477519c6 __poll (libc.so.6 + 0x1039c6)
>                 #4  0x0000557e4b9de02f n/a (/usr/sbin/bird + 0x10502f)
>                 #5  0x0000557e4b8ee3de n/a (/usr/sbin/bird + 0x153de)
>                 #6  0x00007fcc47677ca8 n/a (libc.so.6 + 0x29ca8)
>                 #7  0x00007fcc47677d65 __libc_start_main (libc.so.6 +
> 0x29d65)
>                 #8  0x0000557e4b8ee671 n/a (/usr/sbin/bird + 0x15671)
>                 ELF object binary architecture: AMD x86-64
> 
> 
> version:
> bird3          3.2.0-cznic.1~trixie amd64
> 
> best regards,
> Christoph
> 
> config diff for enabing ASPA:
> 
> -------------
> diff --git a/filter.conf b/filter.conf
> index ecd825d..c349eaa 100644
> --- a/filter.conf
> +++ b/filter.conf
> @@ -23,6 +23,12 @@ filter transit_in {
>                 }
>         }
> 
> +       # Log ASPA_INVALIDs
> +       if (aspa_check_downstream(at) = ASPA_INVALID) then
> +       {
> +               print "ASPA INVALID announcement (monitoring only): ", net,
> " AS path: ", bgp_path;
> +       }
> +
>          accept;
> 
>  }
> diff --git a/rpki.conf b/rpki.conf
> index 26335ba..8414266 100644
> --- a/rpki.conf
> +++ b/rpki.conf
> @@ -2,6 +2,7 @@
> 
>  roa4 table r4;
>  roa6 table r6;
> +aspa table at;
> 
> 
>  protocol rpki r3k {
> @@ -9,6 +10,7 @@ protocol rpki r3k {
> 
>          roa4 { table r4; };
>          roa6 { table r6; };
> +       aspa { table at; };
> ---------------
> 

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