I upgraded BIRD from a working
1.6.0-3+trusty+1
to
1.6.1-1+trusty+1
today (from the Ubuntu PPA
https://launchpad.net/~cz.nic-labs/+archive/ubuntu/bird )
Then bird started to segfault:
Sep 28 11:46:24 dns-ccm kernel: [4320833.655332] bird[10188]: segfault at 0 ip
(null) sp 00007fff3f9624a8 error 14 in bird[5654a2004000+70000]
Sep 28 11:46:24 dns-ccm kernel: [4320833.685949] bird[16543]: segfault at 0 ip
(null) sp 00007ffe7e13f2c8 error 14 in bird[55d29a334000+70000]
I rebuilt the package from the PPA sources without debugging and ran
bird in gdb:
# gdb ./build-ipv4/bird
(gdb) set args -f -u bird -g bird
(gdb) run
Starting program: /usr/src/bird-1.6.1/build-ipv4/bird -f -u bird -g bird
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
2016-09-28 15:00:31 <INFO> Chosen router ID 141.42.1.11 according to interface
bond0
2016-09-28 15:00:31 <INFO> Started
Program received signal SIGSEGV, Segmentation fault.
0x0000000000000000 in ?? ()
(gdb) bt
#0 0x0000000000000000 in ?? ()
#1 0x00005555555b8812 in sk_err (s=0x5555558077d0, revents=9) at io.c:1867
#2 0x00005555555b93f1 in io_loop () at io.c:2237
#3 0x00005555555bec05 in main (argc=6, argv=0x7fffffffe5e8) at main.c:883
(gdb) bt full
#0 0x0000000000000000 in ?? ()
No symbol table info available.
#1 0x00005555555b8812 in sk_err (s=0x5555558077d0, revents=9) at io.c:1867
se = 0
sse = 4
#2 0x00005555555b93f1 in io_loop () at io.c:2237
s = 0x5555558077d0
count = 1
poll_tout = 1000
tout = 4332491
nfds = 3
events= 0
pout = 1
s = 0x55555581ac20
n = 0x5555557f3d88 <sock_list+8>
fdmax = 256
pfd = 0x5555558120c0
#3 0x00005555555bec05 in main (argc=6, argv=0x7fffffffe5e8) at main.c:883
use_uid = 115
use_gid = 128
conf = 0x5555557f8b80
(gdb)
My config:
==========
---- SNIP ----
log stderr all;
router id from "bond0";
# Funktion in der die verwendeten ANYCAST-IPs eingetragen werden muessen
function is_anycastIP () {
return net ~ [
141.42.1.1/32,
141.42.1.2/32
];
}
# Direkte Interface-Routen (z.B. die an "lo" gebundene ANYCAST-IP)
lernen
protocol direct {
interface "lo";
}
# Exportieren der OSPF-Routen an die Kernel-Routingtable, keine Imports!
protocol kernel {
scan time 20;
import none;
export all;
preference 100;
}
# Lokale Devices/Interfaces einbeziehen.
# u.a. fuer die automatische Erkennung der RouterID notwendig
protocol device {
scan time 10;
}
protocol ospf ANYCAST {
rfc1583compat yes;
tick 2;
preference 50;
ecmp yes;
import filter {
# Default-Route und die von den anderen kommenden ANYCAST-IPs
nicht aus OSPF importieren
if ((net = 0.0.0.0/0) || is_anycastIP()) then {
reject;
}
accept;
};
export filter {
# Nur die ANYCAST-IPs ins OSPF propagieren
if ((source = RTS_DEVICE) && is_anycastIP()) then {
# E1-Route mit Kosten=5000 erzeugen
ospf_metric1 = 5000;
accept;
}
reject;
};
area 0 {
interface "bond0" {
type broadcast;
hello 10; retransmit 5; wait 40; dead 40;
check link;
priority 0;
cost 5000;
authentication cryptographic;
password "SECRET";
};
};
}
---- SNIP ----
--
Ralf Hildebrandt Charite Universitätsmedizin Berlin
ralf.hildebra...@charite.de Campus Benjamin Franklin
http://www.charite.de Hindenburgdamm 30, 12203 Berlin
Geschäftsbereich IT, Abt. Netzwerk fon: +49-30-450.570.155
