Hi there,
While stress-testing a part of the dbus language binding in an area
(private DBUS server) there is a chance that I hit problems in
libdbus.so itself in that area (as some comments indicate that
multi-threading in the server may need more testing).
Now from time to time I would get segmentation faults, but rarely
traces. Now I got a backtrace, but am not really able to read/determine
whether the culprit is likely to be libdbus.so (the dbus reference
library implementation), my language binding or ooRexx or glibc.
*** glibc detected *** /usr/bin/rexx: double free or corruption (fasttop):
0x0000000000da8980 ***
======= Backtrace: =========
/lib/x86_64-linux-gnu/libc.so.6(+0x78a8f)[0x7f92a0eefa8f]
/lib/x86_64-linux-gnu/libc.so.6(+0x7b1bb)[0x7f92a0ef21bb]
/lib/x86_64-linux-gnu/libc.so.6(realloc+0xf9)[0x7f92a0ef3b19]
/lib/x86_64-linux-gnu/libdbus-1.so.3(+0x28321)[0x7f929e7f1321]
/lib/x86_64-linux-gnu/libdbus-1.so.3(+0x28a98)[0x7f929e7f1a98]
/lib/x86_64-linux-gnu/libdbus-1.so.3(+0x14217)[0x7f929e7dd217]
/lib/x86_64-linux-gnu/libdbus-1.so.3(+0x14c18)[0x7f929e7ddc18]
/lib/x86_64-linux-gnu/libdbus-1.so.3(+0x14f46)[0x7f929e7ddf46]
/lib/x86_64-linux-gnu/libdbus-1.so.3(+0x1295f)[0x7f929e7db95f]
/lib/x86_64-linux-gnu/libdbus-1.so.3(+0x12e35)[0x7f929e7dbe35]
/lib/x86_64-linux-gnu/libdbus-1.so.3(dbus_message_new_method_call+0xfc)[0x7f929e7e0a4c]
/usr/lib/libdbusoorexx.so(DbusBusCallMessage_impl+0x5d0)[0x7f929ea1ed49]
/usr/lib/libdbusoorexx.so(DbusBusCallMessage+0x93)[0x7f929ea1e75f]
/usr/lib/ooRexx/librexx.so.4(_ZN20RexxNativeActivation3runEP10RexxMethodP16RexxNativeMethodP10RexxObjectP10RexxStringPS5_mR15ProtectedObject+0xce)[0x7f92a20d91ae]
/usr/lib/ooRexx/librexx.so.4(_ZN10RexxMethod3runEP12RexxActivityP10RexxObjectP10RexxStringPS3_mR15ProtectedObject+0x71)[0x7f92a2098361]
/usr/lib/ooRexx/librexx.so.4(_ZN10RexxObject22processProtectedMethodEP10RexxStringP10RexxMethodPPS_mR15ProtectedObject+0x7d)[0x7f92a20a3f4d]
/usr/lib/ooRexx/librexx.so.4(_ZN21RexxExpressionMessage8evaluateEP14RexxActivationP19RexxExpressionStack+0x256)[0x7f92a20fed36]
/usr/lib/ooRexx/librexx.so.4(_ZN21RexxInstructionReturn7executeEP14RexxActivationP19RexxExpressionStack+0x44)[0x7f92a210cd44]
/usr/lib/ooRexx/librexx.so.4(_ZN14RexxActivation3runEP10RexxObjectP10RexxStringPS1_mP15RexxInstructionR15ProtectedObject+0x11c)[0x7f92a20d1c9c]
/usr/lib/ooRexx/librexx.so.4(_ZN8RexxCode3runEP12RexxActivityP10RexxMethodP10RexxObjectP10RexxStringPS5_mR15ProtectedObject+0x73)[0x7f92a20d5363]
/usr/lib/ooRexx/librexx.so.4(_ZN10RexxMethod3runEP12RexxActivityP10RexxObjectP10RexxStringPS3_mR15ProtectedObject+0x71)[0x7f92a2098361]
/usr/lib/ooRexx/librexx.so.4(_ZN10RexxObject11messageSendEP10RexxStringPPS_mR15ProtectedObject+0xd3)[0x7f92a20a47d3]
/usr/lib/ooRexx/librexx.so.4(_ZN21RexxExpressionMessage8evaluateEP14RexxActivationP19RexxExpressionStack+0x256)[0x7f92a20fed36]
/usr/lib/ooRexx/librexx.so.4(_ZN25RexxInstructionAssignment7executeEP14RexxActivationP19RexxExpressionStack+0xf8)[0x7f92a2102298]
/usr/lib/ooRexx/librexx.so.4(_ZN14RexxActivation3runEP10RexxObjectP10RexxStringPS1_mP15RexxInstructionR15ProtectedObject+0x11c)[0x7f92a20d1c9c]
/usr/lib/ooRexx/librexx.so.4(_ZN8RexxCode3runEP12RexxActivityP10RexxMethodP10RexxObjectP10RexxStringPS5_mR15ProtectedObject+0x73)[0x7f92a20d5363]
/usr/lib/ooRexx/librexx.so.4(_ZN10RexxMethod3runEP12RexxActivityP10RexxObjectP10RexxStringPS3_mR15ProtectedObject+0x71)[0x7f92a2098361]
/usr/lib/ooRexx/librexx.so.4(_ZN10RexxObject11messageSendEP10RexxStringPPS_mR15ProtectedObject+0xd3)[0x7f92a20a47d3]
/usr/lib/ooRexx/librexx.so.4(_ZN10RexxObject11sendMessageEP10RexxStringPPS_m+0x38)[0x7f92a20a5088]
/usr/lib/ooRexx/librexx.so.4(_ZN10RexxObjectnwEmP9RexxClassPPS_m+0x6f)[0x7f92a20a513f]
/usr/lib/ooRexx/librexx.so.4(_ZN10RexxObject7newRexxEPPS_m+0x17)[0x7f92a20a51b7]
/usr/lib/ooRexx/librexx.so.4(_ZN7CPPCode3runEP12RexxActivityP10RexxMethodP10RexxObjectP10RexxStringPS5_mR15ProtectedObject+0x184)[0x7f92a20cc614]
/usr/lib/ooRexx/librexx.so.4(_ZN10RexxMethod3runEP12RexxActivityP10RexxObjectP10RexxStringPS3_mR15ProtectedObject+0x71)[0x7f92a2098361]
/usr/lib/ooRexx/librexx.so.4(_ZN10RexxObject11messageSendEP10RexxStringPPS_mR15ProtectedObject+0xd3)[0x7f92a20a47d3]
/usr/lib/ooRexx/librexx.so.4(_ZN21RexxExpressionMessage8evaluateEP14RexxActivationP19RexxExpressionStack+0x256)[0x7f92a20fed36]
/usr/lib/ooRexx/librexx.so.4(_ZN21RexxInstructionReturn7executeEP14RexxActivationP19RexxExpressionStack+0x44)[0x7f92a210cd44]
/usr/lib/ooRexx/librexx.so.4(_ZN14RexxActivation3runEP10RexxObjectP10RexxStringPS1_mP15RexxInstructionR15ProtectedObject+0x11c)[0x7f92a20d1c9c]
/usr/lib/ooRexx/librexx.so.4(_ZN8RexxCode3runEP12RexxActivityP10RexxMethodP10RexxObjectP10RexxStringPS5_mR15ProtectedObject+0x73)[0x7f92a20d5363]
/usr/lib/ooRexx/librexx.so.4(_ZN10RexxMethod3runEP12RexxActivityP10RexxObjectP10RexxStringPS3_mR15ProtectedObject+0x71)[0x7f92a2098361]
/usr/lib/ooRexx/librexx.so.4(_ZN10RexxObject11messageSendEP10RexxStringPPS_mR15ProtectedObject+0xd3)[0x7f92a20a47d3]
/usr/lib/ooRexx/librexx.so.4(_ZN21RexxExpressionMessage8evaluateEP14RexxActivationP19RexxExpressionStack+0x256)[0x7f92a20fed36]
/usr/lib/ooRexx/librexx.so.4(_ZN25RexxInstructionAssignment7executeEP14RexxActivationP19RexxExpressionStack+0xf8)[0x7f92a2102298]
/usr/lib/ooRexx/librexx.so.4(_ZN14RexxActivation3runEP10RexxObjectP10RexxStringPS1_mP15RexxInstructionR15ProtectedObject+0x11c)[0x7f92a20d1c9c]
/usr/lib/ooRexx/librexx.so.4(_ZN8RexxCode3runEP12RexxActivityP10RexxMethodP10RexxObjectP10RexxStringPS5_mR15ProtectedObject+0x73)[0x7f92a20d5363]
/usr/lib/ooRexx/librexx.so.4(_ZN10RexxMethod3runEP12RexxActivityP10RexxObjectP10RexxStringPS3_mR15ProtectedObject+0x71)[0x7f92a2098361]
/usr/lib/ooRexx/librexx.so.4(_ZN10RexxObject22processProtectedMethodEP10RexxStringP10RexxMethodPPS_mR15ProtectedObject+0x7d)[0x7f92a20a3f4d]
/usr/lib/ooRexx/librexx.so.4(_ZN22RexxInstructionMessage7executeEP14RexxActivationP19RexxExpressionStack+0x2fd)[0x7f92a21091fd]
/usr/lib/ooRexx/librexx.so.4(_ZN14RexxActivation3runEP10RexxObjectP10RexxStringPS1_mP15RexxInstructionR15ProtectedObject+0x11c)[0x7f92a20d1c9c]
/usr/lib/ooRexx/librexx.so.4(_ZN8RexxCode3runEP12RexxActivityP10RexxMethodP10RexxObjectP10RexxStringPS5_mR15ProtectedObject+0x73)[0x7f92a20d5363]
/usr/lib/ooRexx/librexx.so.4(_ZN10RexxMethod3runEP12RexxActivityP10RexxObjectP10RexxStringPS3_mR15ProtectedObject+0x71)[0x7f92a2098361]
/usr/lib/ooRexx/librexx.so.4(_ZN10RexxObject11messageSendEP10RexxStringPPS_mR15ProtectedObject+0xd3)[0x7f92a20a47d3]
/usr/lib/ooRexx/librexx.so.4(_ZN21RexxExpressionMessage8evaluateEP14RexxActivationP19RexxExpressionStack+0x256)[0x7f92a20fed36]
/usr/lib/ooRexx/librexx.so.4(_ZN25RexxInstructionAssignment7executeEP14RexxActivationP19RexxExpressionStack+0xf8)[0x7f92a2102298]
/usr/lib/ooRexx/librexx.so.4(_ZN14RexxActivation3runEP10RexxObjectP10RexxStringPS1_mP15RexxInstructionR15ProtectedObject+0x11c)[0x7f92a20d1c9c]
/usr/lib/ooRexx/librexx.so.4(_ZN14RexxActivation8dispatchEv+0x5b)[0x7f92a20d2a4b]
/usr/lib/ooRexx/librexx.so.4(_ZN12RexxActivity9runThreadEv+0x13e)[0x7f92a20f589e]
/usr/lib/ooRexx/librexx.so.4(_Z9threadFncPv+0x9)[0x7f92a2123999]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x6d8c)[0x7f92a19b2d8c]
/lib/x86_64-linux-gnu/libc.so.6(clone+0x6d)[0x7f92a0f5d04d]
======= Memory map: ========
00400000-00401000 r-xp 00000000 08:01 8398528
/usr/bin/rexx
00601000-00602000 rw-p 00001000 08:01 8398528
/usr/bin/rexx
00d8e000-00daf000 rw-p 00000000 00:00 0
[heap]
7f9298000000-7f9298021000 rw-p 00000000 00:00 0
7f9298021000-7f929c000000 ---p 00000000 00:00 0
7f929e540000-7f929e541000 ---p 00000000 00:00 0
7f929e541000-7f929e5c1000 rw-p 00000000 00:00 0
7f929e5c1000-7f929e5c8000 r-xp 00000000 08:01 14421729
/lib/x86_64-linux-gnu/librt-2.13.soAborted
rony@rony-linux:/mnt/root_e/rony/dev/dbus20110602/tutorials-dbus/c-api/work/dbusoorexx/tests$
Any opintions, hints, tips highly appreciated !
Regards,
---rony
P.S.: Doing the same stress test with the standard system and session
buses (using the same test programs) has not yielded such an error so far.
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