On 19/06/17 01:02, Justin Jose wrote:

I got a couple of dnsmasqd crash and on investigating I found the crash is due to accessing a NULL pointer.

What version of dnsmasq?

I have a fix for this problem and attached with this mail.

Would you have any suggestion for this fix?

hostname_isequal is used in quite a few places and should never be passed a null pointer, so in my opinion the fix is a sticking plaster over the issue and has the potential result of leaving null pointers hanging around for other functions to fall over anyway. The root cause should be found and squished. Any idea which particular call to hostname_isequal was involved?



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