bird 3.1.4 Assertion 'heea' failed at nest/rt-table.c:4120

[Maria Matejka]

Hello Matt,

thanks for this, i'm expecting to check this soon. Do i understand
correctly that this happens when BIRD crashes and leaves routes behind
in the kernel table, and then you re-start? Is there by any chance a
possibility to get the core and/or the config file from you, please?

Thanks!  
Maria

On Mon, Oct 06, 2025 at 10:43:52AM -0400, Matt Corallo wrote:

> Thanks for all the work on bird3. It looks like 3.1.4 is much more stable
> than past releases, however I still get a crash if I start it while a
> routing table that bird is responsible for has stale entries left over from
> a past run which crashed. I now see
> 
> #0  __pthread_kill_implementation (threadid=<optimized out>, signo=signo at entry=6, no_tid=no_tid at entry=0)
>     at ./nptl/pthread_kill.c:44
> #1  0x00007ffff7dd99ff in __pthread_kill_internal (threadid=<optimized out>,
> signo=6) at ./nptl/pthread_kill.c:89
> #2  0x00007ffff7d84cc2 in __GI_raise (sig=sig at entry=6) at ../sysdeps/posix/raise.c:26
> #3  0x00007ffff7d6d4ac in __GI_abort () at ./stdlib/abort.c:73
> #4  0x000055555566044c in bug (msg=msg at entry=0x555555670ee0 "Assertion '%s'
> failed at %s:%d") at sysdep/unix/log.c:412
> #5  0x00005555555ebd92 in rt_next_hop_update_rte (old=0x7fffc74f2038,
> new=0x7ffff6a5d160) at nest/rt-table.c:4120
> #6  rt_next_hop_update_net (tab=<optimized out>, ni=<optimized out>,
> n=<optimized out>) at nest/rt-table.c:4357
> #7  rt_next_hop_update (_tab=<optimized out>) at nest/rt-table.c:4579
> #8  0x00005555555ac0a4 in ev_run_list_limited (l=l at entry=0x5555557da288,
> limit=4294967294, limit at entry=4294967295)
>     at lib/event.c:338
> #9  0x000055555565d64c in birdloop_run (_loop=0x5555557da1b0) at sysdep/unix/io-loop.c:1836
> #10 0x00005555555ac0a4 in ev_run_list_limited (l=0x5555558cce78,
> limit=4294967283, limit at entry=4294967295) at lib/event.c:338
> #11 0x000055555565b40f in bird_thread_main (arg=0x5555558cd0d0) at sysdep/unix/io-loop.c:952
> #12 0x00007ffff7dd7b7b in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:448
> #13 0x00007ffff7e557b8 in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

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