Date: Thu, 20 Nov 2025 22:38:38 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 291119] /usr/sbin/ntpd Segmentation fault (bind failed: Address already in use) when addresses are duplicated Message-ID: <bug-291119-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=291119 Bug ID: 291119 Summary: /usr/sbin/ntpd Segmentation fault (bind failed: Address already in use) when addresses are duplicated Product: Base System Version: 15.0-RELEASE Hardware: amd64 OS: Any Status: New Severity: Affects Only Me Priority: --- Component: bin Assignee: bugs@FreeBSD.org Reporter: olevole@ya.ru % uname -mr 15.0-RC2 amd64 possibly related to https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=281202 Incorrect processing leads to failure in the src/contrib/ntp/ntpd/ntp_io.c area -- root@home:~# lldb -c /var/coredumps/ntpd.core `which ntpd` (lldb) target create "/usr/sbin/ntpd" --core "/var/coredumps/ntpd.core" Core file '/var/coredumps/ntpd.core' (x86_64) was loaded. (lldb) bt * thread #1, name = 'ntpd', stop reason = signal SIGSEGV * frame #0: 0x00000c61cacf3213 ntpd`socktoa(sock=0x0000000000000024) at socktoa.c:46:10 frame #1: 0x00000c61cac97b1a ntpd`update_interfaces(port=123, receiver=0x0000000000000000, data=0x0000000000000000) at ntp_io.c:1926:5 frame #2: 0x00000c61cac96a96 ntpd`io_open_sockets [inlined] create_sockets(port=123) at ntp_io.c:2036:2 frame #3: 0x00000c61cac9668b ntpd`io_open_sockets at ntp_io.c:513:2 frame #4: 0x00000c61cac83ab3 ntpd`config_ntpd(ptree=0x000034896fa4a180, input_from_files=<unavailable>) at ntp_config.c:5036:2 frame #5: 0x00000c61cac817ad ntpd`save_and_apply_config_tree(input_from_file=<unavailable>) at ntp_config.c:5276:2 [artificial] frame #6: 0x00000c61cac8193c ntpd`getconfig(argc=0, argv=0x00000c69eb4ede50) at ntp_config.c:5212:2 frame #7: 0x00000c61cacb5560 ntpd`ntpdmain(argc=0, argv=0x00000c69eb4ede50) at ntpd.c:1141:2 frame #8: 0x00000c61cacb4dc9 ntpd`main(argc=<unavailable>, argv=<unavailable>) at ntpd.c:445:9 frame #9: 0x00000c69ef37e37f libc.so.7`__libc_start1(argc=2, argv=0x00000c69eb4ede40, env=0x00000c69eb4ede58, cleanup=<unavailable>, mainX=(ntpd`main at ntpd.c:426)) at libc_start1.c:180:7 frame #10: 0x00000c61cac7ec31 ntpd`_start at crt1_s.S:80 (lldb) up frame #1: 0x00000c61cac97b1a ntpd`update_interfaces(port=123, receiver=0x0000000000000000, data=0x0000000000000000) at ntp_io.c:1926:5 1923 1924 msyslog(LOG_ERR, 1925 "cannot bind address %s", -> 1926 stoa(&ep->sin)); 1927 } 1928 free(ep2); 1929 } (lldb) frame #2: 0x00000c61cac96a96 ntpd`io_open_sockets [inlined] create_sockets(port=123) at ntp_io.c:2036:2 2033 2034 create_wildcards(port); 2035 -> 2036 update_interfaces(port, NULL, NULL); 2037 2038 /* 2039 * Now that we have opened all the sockets, turn off the reuse -- The easiest way to repeat ( create a duplicate address on different interfaces ): ``` service ntpd onestop || true ifconfig bridge100 create ifconfig bridge100 10.10.10.10/24 ifconfig bridge101 create ifconfig bridge101 10.10.10.10/24 ntpd -n ``` -- You are receiving this mail because: You are the assignee for the bug.help
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