2011/6/21 Ludovic Rousseau <ludovic.rouss...@gmail.com>:
> Hello,
>
> I try to debug a PKCS#11 program using pkcs11-spy.
> The problem is that for an unknown reason the C_Initialize() from the
> spy is calling istelf instead of the C_Initialize from OpenSC.
>
> After some 261418 calls the program crashes because of a stack
> exhaustion of something similar.
>
> With another program the pkcs11-spy works great. So the problem is not
> general :-(
>
>
> It looks like the C_Initialize symbol used by C_GetFunctionList() from
> OpenSC is resolved using the C_Initialize from the spy and not the
> C_Initialize from OpenSC.
>
> If I rename the function C_Initialize into C_InitializeX in
> src/pkcs11/pkcs11-global.c and use C_InitializeX to initialize
> pkcs11_function_list it works but I get the problem on the next
> PKCS#11 call, C_GetSlotList in my case.
>
> The program exposing the problem is a C++ one. But maybe that is not related.
> Anyone having the same problem?
>
> Any idea how to solve this?
Using LD_DEBUG=all I get some debug info.
With the working program I have:
2035: symbol=C_Initialize; lookup in file=/home/lroussea/sc/TU/tellme [0]
2035: symbol=C_Initialize; lookup in file=/lib/libdl.so.2 [0]
2035: symbol=C_Initialize; lookup in file=/lib/libpthread.so.0 [0]
2035: symbol=C_Initialize; lookup in file=/usr/lib/libstdc++.so.6 [0]
2035: symbol=C_Initialize; lookup in file=/lib/libm.so.6 [0]
2035: symbol=C_Initialize; lookup in file=/lib/libgcc_s.so.1 [0]
2035: symbol=C_Initialize; lookup in file=/lib/libc.so.6 [0]
2035: symbol=C_Initialize; lookup in file=/lib64/ld-linux-x86-64.so.2 [0]
2035: symbol=C_Initialize; lookup in
file=/usr/lib/pkcs11/opensc-pkcs11.so [0]
2035: binding file /usr/lib/pkcs11/opensc-pkcs11.so [0] to
/usr/lib/pkcs11/opensc-pkcs11.so [0]: normal symbol `C_Initialize'
With the problematic program I have:
4621: symbol=C_Initialize; lookup in file=../src/TestSuiteP11 [0]
4621: symbol=C_Initialize; lookup in
file=/usr/lib/libcppunit-1.12.so.1 [0]
4621: symbol=C_Initialize; lookup in file=/lib/libdl.so.2 [0]
4621: symbol=C_Initialize; lookup in file=/usr/lib/libssl.so.0.9.8 [0]
4621: symbol=C_Initialize; lookup in file=/usr/lib/libcrypto.so.0.9.8 [0]
4621: symbol=C_Initialize; lookup in file=/lib/libpthread.so.0 [0]
4621: symbol=C_Initialize; lookup in file=/usr/lib/libstdc++.so.6 [0]
4621: symbol=C_Initialize; lookup in file=/lib/libm.so.6 [0]
4621: symbol=C_Initialize; lookup in file=/lib/libgcc_s.so.1 [0]
4621: symbol=C_Initialize; lookup in file=/lib/libc.so.6 [0]
4621: symbol=C_Initialize; lookup in file=/lib64/ld-linux-x86-64.so.2 [0]
4621: symbol=C_Initialize; lookup in file=/usr/lib/libz.so.1 [0]
4621: symbol=C_Initialize; lookup in
file=/usr/lib/pkcs11/pkcs11-spy.so [0]
4621:
4621: file=/usr/lib/pkcs11/pkcs11-spy.so [0]; needed by
/usr/lib/pkcs11/opensc-pkcs11.so [0] (relocation dependency)
4621:
4621: binding file /usr/lib/pkcs11/opensc-pkcs11.so [0] to
/usr/lib/pkcs11/pkcs11-spy.so [0]: normal symbol `C_Initialize'
Note the "relocation dependency".
opensc-pkcs11.so is using a symbol from pkcs11-spy.so. This is the problem.
After reading "Dynamic library loading inner workings" [1] I used
-Bsymbolic to link opensc-pkcs11.so but with no success.
To be continued...
[1] http://sourceware.org/ml/libc-help/2010-12/msg00014.html
--
Dr. Ludovic Rousseau
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