[Dnsmasq-discuss] Segfault on dhcpboot

[Simon Kelley]

Sandra Dekkers wrote:
> Hi,
> 
> I'm running a diskless server here, which has the root-fs mounted over
> NFS. It gets its boot information (location of the kernel, root-fs)
> from dnsmasq.
> 
> Using version 2.27, this worked perfectly. But 2.29 seems to segfault
> when sending the boot info:
> dnsmasq: started, version 2.29 cachesize 150
> dnsmasq: compile time options: IPv6 GNU-getopt no-ISC-leasefile no-DBus
> no-I18N
> dnsmasq: DHCP, IP range 192.168.1.16 -- 192.168.1.24, lease time 12h
> dnsmasq: reading /etc/dhcpc/resolv.conf
> dnsmasq: using nameserver xx.xx.xx.xx
> dnsmasq: read /etc/dnshosts - 21 addresses
> dnsmasq: DHCPDISCOVER(eth1) 00:40:63:c0:6b:83
> dnsmasq: DHCPOFFER(eth1) 192.168.1.3 00:40:63:c0:6b:83
> Segmentation fault
> 

Can you send me corefile?

1) Rebuild dnsmasq with debugging info

make clean; make CFLAGS=-d

2) Enable root core dumps and run in the foreground.

ulimit -c unlimited; dnsmasq -d


3) When it crashes, sent me the dnsmasq binary and the core file.


Cheers,

Simon.