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<p>Hi Thomas,</p>
<p>Nice to see your email. Yes of course. I attach valgrind output
and dhcp4_srv.cc patched.<br>
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<div class="moz-cite-prefix">El 18/08/17 a las 08:26, Thomas
Markwalder escribió:<br>
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<div class="moz-cite-prefix">On 8/8/17 9:32 AM, Juan Settecase -
Interlink S.R.L. wrote:<br>
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<blockquote type="cite"
cite="mid:9004d5ad-4baf-188a-8824-fd838590cbe8@interlink.com.ar">Attach
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El 08/08/17 a las 10:16, Juan Settecase - Interlink S.R.L.
escribió: <br>
<blockquote type="cite">Hi, <br>
<br>
I was working with Marcin Siodelski and we found that kea gets
a libmysqlclient segfault when it uses mysql host reservation
with fname and sname options. Marcin did a patch that I
applyed but stil failing <br>
<br>
Marcin is on his deserved vacation and I want to advance
forward in this issue / fix <br>
<br>
If anyone want to get this with me, please write me.I attached
to this email a zip file with: <br>
- backtrace output <br>
- kea-dhcp4.log (severity DEBUG verbosity 99) <br>
- valgrind output <br>
- dhcp4_srv.cc patched <br>
<br>
Kea 1.2 (dhcp4 only for now) <br>
Debian 8.9 <br>
Mysql server is running on same host with Kea. <br>
libmysqlclient18:amd64 5.5.55-0+deb8u1 <br>
mysql-server 5.5.55-0+deb8u1 <br>
segfault appears some minutes after i started kea, segfault
appears, but now return libmysqlclient: <br>
lt-kea-dhcp4[17492]: segfault at 451 ip 00007f299715716c
sp 00007fff90b1d890 error 4 in
libmysqlclient.so.18.0.0[7f2997124000+2b8000] <br>
<br>
Regards! <br>
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<p><tt>Hello Juan:</tt></p>
<p><tt>Following up with this while Marcin is on vacation. Your
zip file did not include the valgrind output, do you have it?
I am wondering if it is something specific in one or more of
your host entries that is causing the code to choke.</tt></p>
<p><tt>Do you have logging "flush" set to false? The attached Kea
log shows the last thing it logged was outputting an ACK but
your stacktrace shows the segfault to be down in host
reservation look up.<br>
</tt></p>
<p><tt>We have another user who reports a segfault but correlates
it to the MySQL server being stopped momentarily for backups.
Do you know if anything similar is happening in your
environment? What the server is currently coded to do is to
exit with an error, if DB connectivity is lost.</tt></p>
<p><tt>Thanks,</tt></p>
<p><tt>Thomas Markwalder</tt></p>
<p><tt>ISC Software Engineering<br>
</tt></p>
<p><tt><br>
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<p><tt><br>
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<p><tt><br>
</tt></p>
<p><tt><br>
</tt></p>
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