Hi,
We are using bird version 2.0.9. We have IXIA traffic which is sending 16K
OSPF routes to our App which we send to Bird. Issue is seen when we restart
our App. As part of our restart app handling, we restart Bird as well.We see a
crash with following BT
VT33-VT33_PRI:~/backup/cores/coredump_2022-09-20.20.31.33# gdb bird
core.bird.30975GNU gdb (GDB) Red Hat Enterprise Linux
7.6.1-120.0.1.el7Copyright (C) 2013 Free Software Foundation, Inc.License
GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>This is
free software: you are free to change and redistribute it.There is NO WARRANTY,
to the extent permitted by law. Type "show copying"and "show warranty" for
details.This GDB was configured as "x86_64-redhat-linux-gnu".For bug reporting
instructions, please see:<http://www.gnu.org/software/gdb/bugs/>...Reading
symbols from
/home/talariuser/backup/cores/coredump_2022-09-20.20.31.33/bird...done.[New LWP
30975][Thread debugging using libthread_db enabled]Using host libthread_db
library "/lib64/libthread_db.so.1".Core was generated by
`/home/talariuser/bird/sbin/bird -f'.Program terminated with signal 8,
Arithmetic exception.#0 0x000000000047262e in sl_free (s=0x783170,
oo=0x7ffff6e1fc60) at /tn-build/src/third_party/bird/lib/slab.c:315315
/tn-build/src/third_party/bird/lib/slab.c: No such file or directory.Missing
separate debuginfos, use: debuginfo-install glibc-2.17-325.0.1.el7_9.x86_64
openssl-libs-1.0.2k-22.el7_9.x86_64 zlib-1.2.7-19.el7_9.x86_64(gdb) bt#0
0x000000000047262e in sl_free (s=0x783170, oo=0x7ffff6e1fc60) at
/tn-build/src/third_party/bird/lib/slab.c:315#1 0x0000000000462e33 in
fib_delete (f=0x75f508, E=0x7ffff6e1fc60) at
/tn-build/src/third_party/bird/nest/rt-fib.c:479#2 0x0000000000420915 in
rt_sync (p=0x75f350) at /tn-build/src/third_party/bird/proto/ospf/rt.c:2104#3
0x00000000004218da in ospf_rt_spf.part.31 (p=0x75f350) at
/tn-build/src/third_party/bird/proto/ospf/rt.c:1721#4 0x000000000041f403 in
ospf_rt_spf (p=0x75f350) at
/tn-build/src/third_party/bird/proto/ospf/rt.c:1692#5 0x000000000042fb8f in
ospf_disp (timer=0x782f10) at
/tn-build/src/third_party/bird/proto/ospf/ospf.c:482#6 0x00000000004736cf in
timers_fire (loop=0x74e0e0 <main_timeloop>) at
/tn-build/src/third_party/bird/lib/timer.c:235#7 0x0000000000408d0a in io_loop
() at /tn-build/src/third_party/bird/sysdep/unix/io.c:2260#8
0x0000000000405af6 in main (argc=2, argv=0x7fffffffeb68) at
/tn-build/src/third_party/bird/sysdep/unix/main.c:952
Since all routes are newly passed and OSPF SPF calculation is done from
scratch, not sure why delete / free has an issue.
Also issue is not seen when there are less routes say ~200. Seems to be
specific to huge number.If any pointers to this will be helpful
Thanks in advance .
RegardsMukund
