[Dnsmasq-discuss] dnsmasq crash - no core dump generated
Simon Kelley
simon at thekelleys.org.uk
Fri Dec 28 09:59:29 GMT 2018
This code is relevant, in src/dnsmasq.c
if (option_bool(OPT_DEBUG))
prctl(PR_SET_DUMPABLE, 1, 0, 0, 0);
Cheers,
Simon.
On 28/12/2018 03:40, Arvind Nagarajan wrote:
> Hi All,
>
> When dnsmasq crashes due to segfault (SIGSEGV) I am not getting a core
> file generated.
> Is this expected?
> dnsmasq is managed by systemd and started using
> systemctl start dnsmasq.
> The dnsmasq service file starts dnsmasq with '-k' option - keep in
> foreground mode.
>
> Howerver If I run the dnsmasq in debug mode using '-d' mode the core
> dump is getting generated.
>
> Do I need to add any signal handling code/any config knob to generate
> core dump in -k' mode.
> Any pointers regarding this will be helpful.
>
> Thanks,
> Arvind
>
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