Segfault from libomniOrb
"Krishnamohan, Srivathsan via omniORB-list" <[email protected]> Mon, 24 Mar 2025 19:20:45 +0000
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Hi All,
We have a c++ server application which uses libOmniOrb 4.2.3 . When our app=
lication goes down, we see Segfault (signal 11) with the following stack t=
race:
0 0x000000000009e496 in ?? ()
#1 0x00007fe11cd8e1ca in std::char_traits<char>::length (__s=3D0x168b1d7 "=
Child_SIGNAL_HANDLER method called : Signal Number :: ")
at /home/user/install/gcc-9.2.0/x86_64-pc-linux-gnu/libstdc++-v3/includ=
e/bits/char_traits.h:335
#2 std::operator<< <std::char_traits<char> > (__out=3D..., __s=3D0x168b1d7=
"Child_SIGNAL_HANDLER method called : Signal Number :: ")
at /home/user/install/gcc-9.2.0/x86_64-pc-linux-gnu/libstdc++-v3/includ=
e/ostream:571
#3 0x00000000010c0385 in Child_SIGNAL_HANDLER (signum=3D11) at Util.cpp:11=
94
#4 <signal handler called>
#5 0x00007fe124f1a907 in omni::giopStream::inputMessage() () from /home/us=
er/libs_gcc92/libomniORB4.so.2
#6 0x00007fe124f2fe53 in omni::giopImpl12::inputNewServerMessage(omni::gio=
pStream*) () from /home/user/libs_gcc92/libomniORB4.so.2
#7 0x00007fe124f30d38 in omni::giopImpl12::inputMessageBegin(omni::giopStr=
eam*, void (*)(omni::giopStream*)) ()
It looks like a segfault in libomniORB4 is leading to application crash. An=
y pointers on how to further troubleshoot this?
1. This issue is only happening when running on Linux VM. No issue seen =
when running on native Linux server.
2. There is enough free memory on the VM
3. Issue is intermittent with no patterns or no known failure modes to t=
rigger it.
4. /var/log/messages has messages such as:
* 2025-03-19T09:20:18.140042-07:00 CodedUI26 kernel: [854690.059214]=
ServerApp[26286]: segfault at 9e496 ip 000000000009e496 sp 00007fff9eed9e7=
8 error 14 in ServerApp_6.2.008.0.1C2[400000+c0a000]
2025-03-19T09:20:18.340068-07:00 CodedUI26 kernel: [854690.260085] ServerAp=
p2_6.2.[31338]: segfault at 9e496 ip 000000000009e496 sp 00007ffc11cad678 e=
rror 14 in ServerApp2_6.2.008.0.2C1[400000+1552000]
2025-03-19T09:20:18.432602-07:00 CodedUI26 systemd-coredump[15390]: Process=
1041 (ServerApp2_6.2.) of user 1000 dumped core.
5. There are multiple server apps which use the libomniOrb from same loc=
ation and hence all of them crash at the same.
Thanks
Srivaths
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<p class=3D"MsoNormal">Hi All, <o:p></o:p></p>
<p class=3D"MsoNormal"><o:p> </o:p></p>
<p class=3D"MsoNormal">We have a c++ server application which uses libOmniO=
rb 4.2.3 . When our application goes down, we see Segfault (signal 11) &nbs=
p;with the following stack trace:<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p> </o:p></p>
<p class=3D"MsoNormal"><span style=3D"font-size:9.0pt;font-family:"Ari=
al",sans-serif;color:black;background:white">0 0x000000000009e49=
6 in ?? ()</span><span style=3D"font-size:9.0pt;font-family:"Arial&quo=
t;,sans-serif;color:black"><br>
<span style=3D"background:white">#1 0x00007fe11cd8e1ca in std::char_t=
raits<char>::length (__s=3D0x168b1d7 "Child_SIGNAL_HANDLER metho=
d called : Signal Number :: ")</span><br>
<span style=3D"background:white"> at /home/user/install/g=
cc-9.2.0/x86_64-pc-linux-gnu/libstdc++-v3/include/bits/char_traits.h:335</s=
pan><br>
<span style=3D"background:white">#2 std::operator<< <std::ch=
ar_traits<char> > (__out=3D..., __s=3D0x168b1d7 "Child_SIGNAL=
_HANDLER method called : Signal Number :: ")</span><br>
<span style=3D"background:white"> at /home/user/install/g=
cc-9.2.0/x86_64-pc-linux-gnu/libstdc++-v3/include/ostream:571</span><br>
<span style=3D"background:white">#3 0x00000000010c0385 in Child_SIGNA=
L_HANDLER (signum=3D11) at Util.cpp:1194</span><br>
<span style=3D"background:white">#4 <signal handler called></sp=
an><br>
<span style=3D"background:white">#5 0x00007fe124f1a907 in omni::giopS=
tream::inputMessage() () from /home/user/libs_gcc92/libomniORB4.so.2</span>=
<br>
<span style=3D"background:white">#6 0x00007fe124f2fe53 in omni::giopI=
mpl12::inputNewServerMessage(omni::giopStream*) () from /home/user/libs_gcc=
92/libomniORB4.so.2</span><br>
<span style=3D"background:white">#7 0x00007fe124f30d38 in omni::giopI=
mpl12::inputMessageBegin(omni::giopStream*, void (*)(omni::giopStream*)) ()
<o:p></o:p></span></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:9.0pt;font-family:"Ari=
al",sans-serif;color:black;background:white"><o:p> </o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:9.0pt;font-family:"Ari=
al",sans-serif;color:black;background:white">It looks like a segfault =
in libomniORB4 is leading to application crash. Any pointers on how to furt=
her troubleshoot this?
<o:p></o:p></span></p>
<ol style=3D"margin-top:0in" start=3D"1" type=3D"1">
<li class=3D"MsoListParagraph" style=3D"margin-left:0in;mso-list:l0 level1 =
lfo1"><span style=3D"font-size:9.0pt;font-family:"Arial",sans-ser=
if;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=3D"MsoListParagraph" style=
=3D"margin-left:0in;mso-list:l0 level1 lfo1"><span style=3D"font-size:9.0pt=
;font-family:"Arial",sans-serif;color:black;background:white">The=
re is enough free memory on the VM
</span><o:p></o:p></li><li class=3D"MsoListParagraph" style=3D"margin-left:=
0in;mso-list:l0 level1 lfo1"><span style=3D"font-size:9.0pt;font-family:&qu=
ot;Arial",sans-serif;color:black;background:white">Issue is intermitte=
nt with no patterns or no known failure modes to trigger it.
</span><o:p></o:p></li><li class=3D"MsoListParagraph" style=3D"margin-left:=
0in;mso-list:l0 level1 lfo1"><span style=3D"font-size:9.0pt;font-family:&qu=
ot;Arial",sans-serif;color:black;background:white">/var/log/messages h=
as messages such as:
</span><o:p></o:p></li><ol style=3D"margin-top:0in" start=3D"1" type=3D"a">
<li class=3D"MsoListParagraph" style=3D"margin-left:0in;mso-list:l0 level2 =
lfo1"><span style=3D"font-size:9.0pt;font-family:"Arial",sans-ser=
if;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=3D"font-size:9.0pt;font-family:=
"Arial",sans-serif;color:black"><br>
<span style=3D"background:white">2025-03-19T09:20:18.340068-07:00 CodedUI26=
kernel: [854690.260085] ServerApp2_6.2.[31338]: segfault at 9e496 ip 00000=
0000009e496 sp 00007ffc11cad678 error 14 in ServerApp2_6.2.008.0.2C1[400000=
+1552000]</span><br>
<span style=3D"background:white">2025-03-19T09:20:18.432602-07:00 CodedUI26=
systemd-coredump[15390]: Process 1041 (ServerApp2_6.2.) of user 1000 dumpe=
d core.</span></span><o:p></o:p></li></ol>
<li class=3D"MsoListParagraph" style=3D"margin-left:0in;mso-list:l0 level1 =
lfo1"><span style=3D"font-size:9.0pt;font-family:"Arial",sans-ser=
if;color:black;background:white">There are multiple server apps which use t=
he libomniOrb from same location and hence all of
them crash at the same. </span><o:p></o:p></li></ol>
<p class=3D"MsoNormal"><o:p> </o:p></p>
<p class=3D"MsoNormal">Thanks<o:p></o:p></p>
<p class=3D"MsoNormal">Srivaths <o:p></o:p></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:1.5in"><o:p> </o:p>=
</p>
</div>
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>
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ttached to this message is STRICTLY
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