[Dnsmasq-discuss] dnsmasq rc5 segfault
simon at thekelleys.org.uk
Fri Jul 11 19:40:35 BST 2008
Carlos Carvalho wrote:
> Today dnsmasq died. It was the first time since I use it :-(
> In its log there's no sign of problems. The last entry is for a
> DHCPNAK; it's the only such record with 2.43. The kernel log says
> Jul 11 14:27:38 hoggar dnsmasq: segfault at 10 ip 08061e91 sp bfffe770 error 4 in dnsmasq[8048000+22000]
> The kernel is compiled with several PAX protections, in particular
> non-executable pages.
> Any ideas on how to debug this? All I can imagine demand a significant
> amount of work here :-(
Best bet is to be ready to catch the next one.
1) rebuild dnsmasq with
2) enable coredumps and move to a directory where they can be written
ulimit -c unlimited
3) run dnsmasq in the foreground
If it crashes again, send me the core dump and the executable file.
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