[Dnsmasq-discuss] dnsmasq does crash

e9hack e9hack at gmail.com
Tue Aug 30 19:47:08 BST 2016


Hi,

I did check it again. I did try to checkout e94ad0fa01ccc8d0c39e069ab29b008f9c811600
'Suppress useless warning about DHCP packets of interfaces without addresses'. But for
some reason, I got all later changes too. Now I did patch the files manually. The crash is
introduced by 2675f2061525bc954be14988d64384b74aa7bf8b 'Handle binding upstream servers to
an interface (--server=1.2.3.4 at eth0) when the named interface is destroyed and recreated
in the kernel'.

Regards,
Hartmut

Am 30.08.2016 um 12:19 schrieb Kevin Darbyshire-Bryant:
> 
> 
> On 29/08/16 20:30, e9hack wrote:
>> Hi,
>>
>> I've trouble with this commit, independently that it looks simple:
>>
>> Suppress useless warning about DHCP packets of interfaces without addresses.
>>
>> Starting with this commit, dnsmasq does crash shortly after start:
>>
>> Mon Aug 29 21:18:40 2016 kern.info kernel: [17587.489903]
>> Mon Aug 29 21:18:40 2016 kern.info kernel: [17587.489903] do_page_fault(): sending SIGSEGV
>> to dnsmasq for invalid write access to 00000038
>> Mon Aug 29 21:18:40 2016 kern.info kernel: [17587.498607] epc = 00411eff in
>> dnsmasq[400000+2d000]
>> Mon Aug 29 21:18:40 2016 kern.info kernel: [17587.503589] ra  = 00411ec7 in
>> dnsmasq[400000+2d000]
>> Mon Aug 29 21:18:40 2016 kern.info kernel: [17587.508587]
>>
>> Regards,
>> Hartmut
> Get an identical error, didn't get as far as narrowing it to a specific commit. 
> Openwrt/LEDE has 'long' carried a (more complicated) patch to suppress the message,
> attached for reference.
> 
> Kevin
> 
> 
> 
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