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<p class="MsoNormal">Hi All, <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">We have a c++ server application which uses libOmniOrb 4.2.3 . When our application goes down, we see Segfault (signal 11) with the following stack trace:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black;background:white">0 0x000000000009e496 in ?? ()</span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black"><br>
<span style="background:white">#1 0x00007fe11cd8e1ca in std::char_traits<char>::length (__s=0x168b1d7 "Child_SIGNAL_HANDLER method called : Signal Number :: ")</span><br>
<span style="background:white"> at /home/user/install/gcc-9.2.0/x86_64-pc-linux-gnu/libstdc++-v3/include/bits/char_traits.h:335</span><br>
<span style="background:white">#2 std::operator<< <std::char_traits<char> > (__out=..., __s=0x168b1d7 "Child_SIGNAL_HANDLER method called : Signal Number :: ")</span><br>
<span style="background:white"> at /home/user/install/gcc-9.2.0/x86_64-pc-linux-gnu/libstdc++-v3/include/ostream:571</span><br>
<span style="background:white">#3 0x00000000010c0385 in Child_SIGNAL_HANDLER (signum=11) at Util.cpp:1194</span><br>
<span style="background:white">#4 <signal handler called></span><br>
<span style="background:white">#5 0x00007fe124f1a907 in omni::giopStream::inputMessage() () from /home/user/libs_gcc92/libomniORB4.so.2</span><br>
<span style="background:white">#6 0x00007fe124f2fe53 in omni::giopImpl12::inputNewServerMessage(omni::giopStream*) () from /home/user/libs_gcc92/libomniORB4.so.2</span><br>
<span style="background:white">#7 0x00007fe124f30d38 in omni::giopImpl12::inputMessageBegin(omni::giopStream*, void (*)(omni::giopStream*)) ()
<o:p></o:p></span></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black;background:white"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black;background:white">It looks like a segfault in libomniORB4 is leading to application crash. Any pointers on how to further troubleshoot this?
<o:p></o:p></span></p>
<ol style="margin-top:0in" start="1" type="1">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo1"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black;background:white">This issue is only happening when running on Linux VM. No issue seen when running on native
Linux server. </span><o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo1"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black;background:white">There is enough free memory on the VM
</span><o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo1"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black;background:white">Issue is intermittent with no patterns or no known failure modes to trigger it.
</span><o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo1"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black;background:white">/var/log/messages has messages such as:
</span><o:p></o:p></li><ol style="margin-top:0in" start="1" type="a">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level2 lfo1"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black;background:white">2025-03-19T09:20:18.140042-07:00 CodedUI26 kernel: [854690.059214] ServerApp[26286]: segfault
at 9e496 ip 000000000009e496 sp 00007fff9eed9e78 error 14 in ServerApp_6.2.008.0.1C2[400000+c0a000]</span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black"><br>
<span style="background:white">2025-03-19T09:20:18.340068-07:00 CodedUI26 kernel: [854690.260085] ServerApp2_6.2.[31338]: segfault at 9e496 ip 000000000009e496 sp 00007ffc11cad678 error 14 in ServerApp2_6.2.008.0.2C1[400000+1552000]</span><br>
<span style="background:white">2025-03-19T09:20:18.432602-07:00 CodedUI26 systemd-coredump[15390]: Process 1041 (ServerApp2_6.2.) of user 1000 dumped core.</span></span><o:p></o:p></li></ol>
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo1"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black;background:white">There are multiple server apps which use the libomniOrb from same location and hence all of
them crash at the same. </span><o:p></o:p></li></ol>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks<o:p></o:p></p>
<p class="MsoNormal">Srivaths <o:p></o:p></p>
<p class="MsoListParagraph" style="margin-left:1.5in"><o:p> </o:p></p>
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