Re: [Dnsmasq-discuss] fix entries in /etc/hosts disabling static leases, segfaults
On Tue, Jan 15, 2019 at 10:39:36PM +0100, Geert Stappers wrote: > On Tue, Jan 15, 2019 at 02:31:56PM -0600, Kaas Baichtal wrote: > > > > > > Patch applied. ( > > > http://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commitdiff;h=18eac67c0a15b673c8d27002c248651b308093e4 > > > ) > > > > > > > I tried to install this patch manually to my 2.80 and got a segfault that > > prevented dnsmasq running. I also tried git cloning the master and > > installing that instead but got the same result. > > FWIW I can reproduce the segfault. > > Syslog: > Jan 15 22:23:00 nero dnsmasq[27580]: started, version 2.80-30-g18eac67 DNS > disabled > Jan 15 22:23:00 nero dnsmasq[27580]: compile time options: IPv6 GNU-getopt > no-DBus no-i18n no-IDN DHCP DHCPv6 no-Lua TFTP no-conntrack ipset auth > no-DNSSEC loop-detect inotify dumpfile > Jan 15 22:23:00 nero dnsmasq-dhcp[27580]: DHCP, proxy on subnet 172.24.0.63 > Jan 15 22:23:00 nero dnsmasq-tftp[27580]: TFTP root is /srv/tftpd > Jan 15 22:23:00 nero kernel: [1481741.304294] dnsmasq[27580]: segfault at 0 > ip 0043328f sp 7fff6f19a348 error 4 in dnsmasq[40+4d000] > > Running in gdb yielded nothing: > # gdb /usr/sbin/dnsmasq > GNU gdb (Debian 7.7.1+dfsg-5) 7.7.1 >... > Reading symbols from /usr/sbin/dnsmasq...(no debugging symbols found)...done. > (gdb) run > Starting program: /usr/sbin/dnsmasq > [Inferior 1 (process 30650) exited normally] > (gdb) > Revert that last commit gets me a working dnsmasq Single line from syslog, from the short git commit hash: Jan 15 22:49:04 nero dnsmasq[31064]: started, version 2.80-29-gf8c77ed DNS disabled Groeten Geert Stappers -- Leven en laten leven ___ Dnsmasq-discuss mailing list Dnsmasq-discuss@lists.thekelleys.org.uk http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss
Re: [Dnsmasq-discuss] fix entries in /etc/hosts disabling static leases, segfaults
On Tue, Jan 15, 2019 at 02:31:56PM -0600, Kaas Baichtal wrote: > Simon Kelley Sun, 13 Jan 2019 15:32:43 -0800 > > On 12/01/2019 21:55, Steven Siloti wrote: > >> It is possible for a config entry to have one address family specified by a > >> dhcp-host directive and the other added from /etc/hosts. This is especially > >> common on OpenWrt because it uses odhcpd for DHCPv6 and IPv6 leases are > >> imported into dnsmasq via a hosts file. > >> > >> To handle this case there need to be separate *_HOSTS flags for IPv4 and > >> IPv6. > >> Otherwise when the hosts file is reloaded it will clear the CONFIG_ADDR(6) > >> flag which was set by the dhcp-host directive. > > > > Patch applied. > > > > I tried to install this patch manually to my 2.80 and got a segfault that > prevented dnsmasq running. I also tried git cloning the master and > installing that instead but got the same result. FWIW I can reproduce the segfault. Syslog: Jan 15 22:23:00 nero dnsmasq[27580]: started, version 2.80-30-g18eac67 DNS disabled Jan 15 22:23:00 nero dnsmasq[27580]: compile time options: IPv6 GNU-getopt no-DBus no-i18n no-IDN DHCP DHCPv6 no-Lua TFTP no-conntrack ipset auth no-DNSSEC loop-detect inotify dumpfile Jan 15 22:23:00 nero dnsmasq-dhcp[27580]: DHCP, proxy on subnet 172.24.0.63 Jan 15 22:23:00 nero dnsmasq-tftp[27580]: TFTP root is /srv/tftpd Jan 15 22:23:00 nero kernel: [1481741.304294] dnsmasq[27580]: segfault at 0 ip 0043328f sp 7fff6f19a348 error 4 in dnsmasq[40+4d000] Running in gdb yielded nothing: # gdb /usr/sbin/dnsmasq GNU gdb (Debian 7.7.1+dfsg-5) 7.7.1 ... Reading symbols from /usr/sbin/dnsmasq...(no debugging symbols found)...done. (gdb) run Starting program: /usr/sbin/dnsmasq [Inferior 1 (process 30650) exited normally] (gdb) Groeten Geert Stappers -- Leven en laten leven ___ Dnsmasq-discuss mailing list Dnsmasq-discuss@lists.thekelleys.org.uk http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss
