Hi,
I needed to test the ntpd from ports (net/ntp, net/ntp-devel,
net/ntp-stable), but they always crashed with a SIGBUS error.
Investigation lead to nss_ldap being the culprit.
With nss_ldap installed and NO keyword "ldap" in /etc/nsswitch.conf,
ntpd will run fine. If you either add "ldap" to passwd or group or
both, ntpd will crash calling gethostaddr (even though LDAP is only
used for passwd/group)
/etc/nsswitch.conf:
group: files ldap
hosts: files dns
networks: files
passwd: files ldap
shells: files
root@build:/usr/ports/net/ntp-stable/work/ntp-4.2.2p4-RC4/ntpd# gdb ./ntpd
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This GDB was configured as "i386-marcel-freebsd"...
(gdb) r -d
Starting program: /usr/ports/net/ntp-stable/work/ntp-4.2.2p4-RC4/ntpd/ntpd -d
ntpd 4.2.2p4-RC4@1.1585-o Wed Nov 15 09:56:13 UTC 2006 (1)
addto_syslog: precision = 1.117 usec
create_sockets(123)
addto_syslog: no IPv6 interfaces found
addto_syslog: ntp_io: estimated max descriptors: 10951, initial socket
boundary: 20
bind() fd 20, family 2, port 123, addr 0.0.0.0, flags=9
Added addr 0.0.0.0 to list of addresses
addto_syslog: Listening on interface wildcard, 0.0.0.0#123 Disabled
bind() fd 21, family 2, port 123, addr 16.30.58.127, flags=25
Added addr 16.30.58.127 to list of addresses
addto_syslog: Listening on interface xl0, 16.30.58.127#123 Enabled
bind() fd 22, family 2, port 123, addr 127.0.0.1, flags=21
Added addr 127.0.0.1 to list of addresses
addto_syslog: Listening on interface lo0, 127.0.0.1#123 Enabled
init_io: maxactivefd 22
local_clock: time 0 base 0.000000 offset 0.000000 freq 0.000 state 0
Program received signal SIGBUS, Bus error.
0x280a98c8 in memset () from /libexec/ld-elf.so.1
(gdb) bt
#0 0x280a98c8 in memset () from /libexec/ld-elf.so.1
#1 0x280c2100 in ?? ()
#2 0x2809f039 in map_object () from /libexec/ld-elf.so.1
#3 0x2809c115 in elf_hash () from /libexec/ld-elf.so.1
#4 0x2809c21c in elf_hash () from /libexec/ld-elf.so.1
#5 0x2809de8c in dlopen () from /libexec/ld-elf.so.1
#6 0x2828140c in _nsdbtaddsrc () from /lib/libc.so.6
#7 0x2827cb92 in ___toupper () from /lib/libc.so.6
#8 0x2827d1b4 in _nsyyparse () from /lib/libc.so.6
#9 0x2828179e in nsdispatch () from /lib/libc.so.6
#10 0x28271776 in getaddrinfo () from /lib/libc.so.6
#11 0x0804bfee in getnetnum (num=0xbfbfe537 "ntp0.XXXX.com",
addr=0xbfbfe9d0, complain=0, a_type=t_UNK) at ntp_config.c:2222
#12 0x0804cb5f in getconfig (argc=2, argv=0xbfbfebcc) at ntp_config.c:652
#13 0x0805246e in ntpdmain (argc=2, argv=0xbfbfebcc) at ntpd.c:744
#14 0x080527bb in main (argc=2, argv=0xbfbfebcc) at ntpd.c:274
(gdb) f 11
#11 0x0804bfee in getnetnum (num=0xbfbfe537 "ntp0.XXXX.com",
addr=0xbfbfe9d0, complain=0, a_type=t_UNK) at ntp_config.c:2222
2222 retval = getaddrinfo(num, "ntp", &hints,
&ptr);
(gdb) l
2217 hints.ai_socktype = SOCK_DGRAM;
2218 #ifdef DEBUG
2219 if (debug > 3)
2220 printf("getaddrinfo %s\n", num);
2221 #endif
2222 retval = getaddrinfo(num, "ntp", &hints,
&ptr);
2223 if (retval != 0 ||
2224 (ptr->ai_family == AF_INET6 && isc_net_probeipv6()
!= ISC_R_SUCCESS)) {
2225 if (complain)
2226 msyslog(LOG_ERR,
(gdb)
What's happening?
Uli