From birdlist at as397444.net  Sat May  2 02:00:29 2026
From: birdlist at as397444.net (Matt Corallo)
Date: Fri, 1 May 2026 20:00:29 -0400
Subject: Several assertion failures in 3.2.0
In-Reply-To: <dce1a1d0-0580-4294-af3f-69311b9dd7d7@as397444.net>
References: <dce1a1d0-0580-4294-af3f-69311b9dd7d7@as397444.net>
Message-ID: <46789d77-1ffc-4441-a5cd-33fb5344bf30@as397444.net>



On 2/20/26 8:41 PM, Matt Corallo wrote:
> I also got a Assertion '!new || rte_is_valid(new)' failed at nest/rt-table.c:1416 once but don't 
> have a coredump for that one.

I managed to hit this one again on 3.2.1:

(gdb) bt
#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  0x00007f94eb2889ff in __pthread_kill_internal (threadid=<optimized out>, signo=6) at 
./nptl/pthread_kill.c:89
#2  0x00007f94eb233cc2 in __GI_raise (sig=sig at entry=6) at ../sysdeps/posix/raise.c:26
#3  0x00007f94eb21c4ac in __GI_abort () at ./stdlib/abort.c:77
#4  0x0000558b3c4dc18c in bug (msg=msg at entry=0x558b3c4ed0d0 "Assertion '%s' failed at %s:%d") at 
sysdep/unix/log.c:442
#5  0x0000558b3c45d861 in channel_notify_optimal (_channel=0x558b71e5b180) at nest/rt-table.c:1563
#6  0x0000558b3c423c8c in ev_run_list_limited (l=l at entry=0x558b71e5b788, limit=4294967294, 
limit at entry=4294967295) at lib/event.c:338
#7  0x0000558b3c4d91bb in birdloop_run (_loop=0x558b71e5b6b0) at sysdep/unix/io-loop.c:2038
#8  0x0000558b3c423c8c in ev_run_list_limited (l=0x558b71e77778, limit=4294967294, 
limit at entry=4294967295) at lib/event.c:338
#9  0x0000558b3c4d6ef7 in bird_thread_main (arg=0x558b71e779e0) at sysdep/unix/io-loop.c:984
#10 0x00007f94eb286b7b in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:448
#11 0x00007f94eb304630 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Matt

From birdlist at as397444.net  Sat May  2 02:01:43 2026
From: birdlist at as397444.net (Matt Corallo)
Date: Fri, 1 May 2026 20:01:43 -0400
Subject: Several assertion failures in 3.2.0
In-Reply-To: <46789d77-1ffc-4441-a5cd-33fb5344bf30@as397444.net>
References: <dce1a1d0-0580-4294-af3f-69311b9dd7d7@as397444.net>
 <46789d77-1ffc-4441-a5cd-33fb5344bf30@as397444.net>
Message-ID: <33d70e47-1535-40d6-ba90-b95af46ba188@as397444.net>



On 5/1/26 8:00 PM, Matt Corallo wrote:
> 
> 
> On 2/20/26 8:41 PM, Matt Corallo wrote:
>> I also got a Assertion '!new || rte_is_valid(new)' failed at nest/rt-table.c:1416 once but don't 
>> have a coredump for that one.
> 
> I managed to hit this one again on 3.2.1:
> 
> (gdb) bt
> #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? 0x00007f94eb2889ff in __pthread_kill_internal (threadid=<optimized out>, signo=6) at ./nptl/ 
> pthread_kill.c:89
> #2? 0x00007f94eb233cc2 in __GI_raise (sig=sig at entry=6) at ../sysdeps/posix/raise.c:26
> #3? 0x00007f94eb21c4ac in __GI_abort () at ./stdlib/abort.c:77
> #4? 0x0000558b3c4dc18c in bug (msg=msg at entry=0x558b3c4ed0d0 "Assertion '%s' failed at %s:%d") at 
> sysdep/unix/log.c:442
> #5? 0x0000558b3c45d861 in channel_notify_optimal (_channel=0x558b71e5b180) at nest/rt-table.c:1563
> #6? 0x0000558b3c423c8c in ev_run_list_limited (l=l at entry=0x558b71e5b788, limit=4294967294, 
> limit at entry=4294967295) at lib/event.c:338
> #7? 0x0000558b3c4d91bb in birdloop_run (_loop=0x558b71e5b6b0) at sysdep/unix/io-loop.c:2038
> #8? 0x0000558b3c423c8c in ev_run_list_limited (l=0x558b71e77778, limit=4294967294, 
> limit at entry=4294967295) at lib/event.c:338
> #9? 0x0000558b3c4d6ef7 in bird_thread_main (arg=0x558b71e779e0) at sysdep/unix/io-loop.c:984
> #10 0x00007f94eb286b7b in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:448
> #11 0x00007f94eb304630 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Oh, oops, probably relevant that another thread was doing this at the same time:

#0  0x0000558b3c433858 in sl_alloc (s=0x558b71f8dea0) at lib/slab.c:273
#1  0x0000558b3c433c2b in sl_alloc (s=<optimized out>) at lib/slab.c:308
#2  0x0000558b3c47d889 in bgp_get_prefix (c=<optimized out>, ni=0x7f94ba5be250, src=0x7f94ea7e6730, 
add_path_tx=<optimized out>) at proto/bgp/attrs.c:1880
#3  bgp_rt_notify (P=<optimized out>, C=<optimized out>, n=0x7f94ba5be268, new=<optimized out>, 
old=<optimized out>) at proto/bgp/attrs.c:2491
#4  0x0000558b3c45a8d3 in rt_notify_basic (c=c at entry=0x558b71e74650, new=new at entry=0x7f94b0bf0e78, 
old=<optimized out>, old at entry=0x7f94d9e9a4b8, trte=trte at entry=0x7f94b0bf0e78) at nest/rt-table.c:1463
#5  0x0000558b3c45d879 in channel_notify_optimal (_channel=0x558b71e74650) at nest/rt-table.c:1567
#6  0x0000558b3c423c8c in ev_run_list_limited (l=l at entry=0x558b71e74dd8, limit=4294967294, 
limit at entry=4294967295) at lib/event.c:338
#7  0x0000558b3c4d91bb in birdloop_run (_loop=0x558b71e74d00) at sysdep/unix/io-loop.c:2038
#8  0x0000558b3c423c8c in ev_run_list_limited (l=0x558b71e76f68, limit=4294967291, 
limit at entry=4294967295) at lib/event.c:338
#9  0x0000558b3c4d6ef7 in bird_thread_main (arg=0x558b71e771d0) at sysdep/unix/io-loop.c:984
#10 0x00007f94eb286b7b in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:448
#11 0x00007f94eb304630 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Matt